Analysis Areas for Strategic
        Assessment of
Estuarine and Coastal Waters
             July 1987
       Joint EPA/NOAA Team on

       Estuarine and Coastal Waters

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Analysis Areas for Strategic Assessment of
        Estuarine and Coastal Waters
              Strategic Assessment Branch
              Ocean Assessments Division
      Office of Oceanography and Marine Assessment
                National Ocean Service
      National Oceanic and Atmospheric Adminstration
              U.S. Department of Commerce
         Office of Marine and Estuarine Protection
                    Office of Water
          U.S. Environmental Protection Agency
              Environmental Results Branch
             Management Systems Division
       Office of Management Systems and Evaluation
         Office of Policy, Planning and Evaluation
          U.S. Environmental Protection Agency

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Purpose

This volume identifies areal units that are being used to collect and organize information
on the estuarine and coastal regions of the contiguous USA.  The units or analysis areas
identified are  those used in  NOAA's Strategic Assessment  Program, but are also
commonly used by EPA and others for organizing information.  The volume is intended to
serve as a starting point for establishing a consistent  set of areal units  that may
eventually be used in EPA's program on Near Coastal Waters.

The EPA/NOAA Team

A joint EPA/NOAA team has been informally created to develop a set of information and
assessment products on the Nation's estuarine and coastal areas.  The team's objective is
to make  maximum use of the  data,  information, and knowledge that exists nationwide
about the important areas addressed by  EPA's National  Estuarine Program  and Near
Coastal Waters Program.

The team brings together EPA and NOAA personnel to conduct hands-on data development
and synthesis. Its creation signals an increased commitment by EPA and NOAA to address
jointly resource-use and  environmental  quality problems in  estuarine and coastal
areas. The involvement of NOAA and EPA personnel on the team will vary depending on
the project. This  volume is the team's first product.  Development  of a second  product,
Synthesis of Estuarine and Coastal Information for EPA Region I, is now underway and
will be completed this fall.  Plans are to develop additional information and assessment
products in FY 1988.

Background

Defining  the areal  units for analysis is one of the important first steps in conducting any
study or in organizing and presenting a body of information or knowledge.  The units
chosen must take into account the boundaries of natural systems, "problem  sheds" or
impact areas,  political jurisdictions,   and a variety of management regimes, as well  as
considerations of  scale and resolution.  It is unlikely that any single unit  will satisfy the
competing needs  for areal specificity, the resolution that existing data will support, and
the resources available.  Consequently,  selecting areal units  for analysis will  always
require  compromise, particularly  when  attempting to characterize  complex estuarine
and coastal areas. It is important that the  areal unit(s) chosen  fit  into a consistent
hierarchy that  can be useful for  and  can incorporate analyses at the local and  regional
level, and can be meaningfully aggregated for nationwide assessments.

The areal units/analysis areas presented  in  this volume reflect  this compromise
between  the detailed level required for local decisionmaking, e.g., segmenting  a stream
or  river  into short reaches,  and  the aggregation  needs  for realistically assessing
nationwide priorities and tradeoffs.

Organization of  this  Volume

This volume is organized into five sections.  This first section defines the  analysis areas
or units used in the Strategic  Assessment Program and presents a schematic diagram

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illustrating each.  A few comments are also presented on the problem of defining offshore
analysis areas.  The remaining four sections are:

     Coastal Counties - This section contains a complete list organized by state of
     coastal counties and those noncoastal counties  that intersect an estuarine
     drainage area. A schematic map of each coastal state showing the location of
     each county is also included.  Volume II of the National Estuarine Inventory
     (NEI) presents area! estimates of 24 land use categories for each coastal
     and noncoastal county and indicates the area of each category that lies
     within and  outside the estuarine drainage area.

     Estuarine Drainage  Areas - This section contains a map of each of the 101
     estuaries in the NEI.  The maps show: the estuarine drainage area  (EDA)
     boundary for each estuary; the  USGS cataloging units that comprise each
     EDA; and  the  three  zones into  which the estuarine surface  has  been
     segmented based on  salinity. Estuarine  drainage areas are not shown for
     eight estuaries in Oregon and one in California as they have only recently
     been added to the Inventory.

     Rivers and Streams - This section contains a summary of the rivers and
     streams entering coastal counties, and  a schematic map of each  state
     showing the point at which each enters a coastal county.

     Offshore Boundaries  - This section contains maps from NOAA's Strategic
     Assessment  Data Atlas  series showing political,  maritime, and jurisdic-
     tional boundaries  in offshore areas, and  a paper describing an early effort
     to segment offshore areas based on zones of impact of onshore pollution.

Definitions

Coastal  Counties (Figure  3) - The list of coastal counties used  by  the Strategic
Assessments Branch is based on a list originally produced by NOAA's Office of Coastal
Zone Management. The  list includes 328 counties from the 22 coastal  states of the
contiguous USA, excluding  the Great Lakes.  In general,  each county borders on waters
that  are  either  marine, estuarine, or tidal fresh.  Human  activities  in these  counties
have a direct impact on estuarine and coastal waters. Several NOAA projects use coastal
counties as the primary geographic unit  for organizing data because much existing
information (land use, population, etc.) is only  available  by county.   Counties are a
widely used unit of comparison, and reflect the political  and institutional boundaries by
which many management decisions are made.

A  related "county level"  analysis unit  is the  noncoastal counties that intersect EDAs.
These inland counties do  not have a  direct link to marine, estuarine, or tidal fresh
waters, but nevertheless can have an indirect impact on these environments due to their
proximity to coastal counties.

USGS Cataloging  Units (Figure  2) - Cataloging Units are the  smallest of four
levels of hydrologic units used by the USGS to define the Nation's river drainage system
(the  other  three  levels, beginning with the largest, are the Region,  Subregion, and
Accounting Unit).  A cataloging unit typically encompasses either a portion of or the

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entire watershed of a major river and is used to define EDAs. Cataloging units are usually
at least 700 square  miles in area.

Hydrologic  Unit/County  Subareas  -  HUCOs  (Figure  4)  - A  hydrologic
cataloging unit/county  subarea, or HUGO, is the unique area of overlap between a USGS
hydrologic cataloging unit and a coastal county.  It is the basic geographic unit by which
data in the National Coastal Pollutant Discharge Inventory (NCPDI) are organized.  By
aggregating appropriate HUCOs. pollutant loading estimates can be summarized by either
county or cataloging unit.

Fluvial Drainage Area  -  FDA -  The  FDA is the entire drainage area of a major
river.  In most cases the  FDA is  larger than an estuarine drainage area. In a few cases
the FDA coincides with the estuarine drainage area. This occurs when the total drainage
of the system is small and may consist of only one or two cataloging units.  A small map
showing the fluvial and estuarine drainage area appears as an inset on  the NEI  map for
each estuarine system.

Estuarine  Drainage Areas -  EDAs  (Figure  1) - An  EDA is the  land and water
component of a fluvial drainage area  that most directly affects  an estuary.    In most
cases, the boundaries of an  EDA are delineated by the boundaries of the  USGS hydrologic
cataloging unit(s) or portion of the unit(s) that contains the head of tide of the  streams
and rivers flowing to the estuary and the seaward estuarine boundary of the estuary.  In
many cases this means the EDA boundary extends landward beyond the actual head of tide
to the drainage divide of the cataloging  unit.  In cases where complex coastal drainages
occur, drainage  divides  that bisect cataloging  units have  been  determined using
topographic maps to more accurately represent areas draining directly to estuaries. The
EDA  is always equal to or smaller than the FDA. Because it is based on hydrogeological
features, an EDA often includes more than one political or jurisdictional unit.

The concept of the  EDA  was developed by NOAA to establish a useful spatial unit for
compiling land use  and flow data and other factors such as sources of pollutants that
directly  affect each  estuary.

Rivers  and  Streams  Entering  Coastal Areas (Figure  3) -  The  rivers  and
streams  that originate outside  of and  flow  into coastal  areas are termed "upstream
sources" in the NCPDI and the NEI.  These  rivers and streams carry pollutant  loads to
estuaries and coastal waters that are generated  from  point and nonpoint  sources
discharging inland of coastal drainage areas.  For many estuaries, upstream sources are
a major source of pollutants.  Over 320 rivers and streams are identified and located in
the section on rivers  and streams. From this universe, 163 have been included in  the
NCPDI based on their volume of discharge and size of watershed. The flow from these
163  rivers and  streams  accounts for over 90  percent  of the total  freshwater  flow
entering coastal counties.

Estuarine Zones  (Figure  5)  - Each  estuary  in  the NEI is  divided  into three
estuarine zones based on the average annual depth-averaged salinity concentration in the
estuary.  The salinity ranges (measured in parts per thousand) corresponding  to each
zone  often dictate the distribution of biological communities and contribute to estuarine
circulation.  The salinity zones are:

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       • Estuarine Sea water Zone = 25.0 ppt and greater

       • Estuarine Mixing Zone =  0.5 to 25.0 ppt

       • Estuarine Tidal Fresh Zone = 0.0 to 0.5 ppt

Isohaline  Zones (Figure  6) • It  is  currently  planned  to  identify  the location  of
isohaline zones  in  each estuary to provide a finer resolution for salinity distribution  as
an indicator of transport processes,  and as a required parameter in  delineating the
extent of estuarine-dependent resources. Salinities will be  averaged over high and low
freshwater  inflow periods  based upon  a 3-month moving  average.  Isohalines will  be
depicted in 5 part per thousand increments  for surface and bottom water. A measure of
salinity stability over averaging periods  will also be provided.


Problem  of Offshore Areas

In onshore  areas, units such as counties, cataloging units, and EDAs are used or adapted
to define "problem  sheds" for analyzing the impact of human activities on  nearshore
waters.  For offshore areas, no comparable spatial unit exists at present defining natural
management zones that can  be used  in evaluating the direct and  indirect  impact  on
offshore  waters  of man's  activities.   Much  additional  work is  needed  to  define
appropriate units.  The information  presented here on  existing political boundaries
(Federal, state,  county), maritime zones (e.g., territorial  and contiguous  zones), and
jurisdictional areas (e.g.,  Fishery  Conservation Zones, Minerals Management Service
Outer  Continental  Shelf  Central  Planning Areas),  illustrates  the  complexity  of the
institutional considerations for defining these units.  The paper  describing use  of
remotely sensed satellite  imagery to determine spatial boundaries of nearshore  areas
that are affected by land based pollutants provides an example  of an attempt to address
this  complex problem.

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Figure 1.  Estuarine Drainage Area
                                 County     Cat Unt     Estuann*
                                Boundary   Boundary   Drainage Area
Figure 2. USGS Cataloging Units
                                             Tonw IndfcHt Indlvldua
                                             Cataloging Unto

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Figure 3. Counties
                               Dot Patterns Indicate Coastal Counties
                               Line Patterns Indicate Noncoastal Counties
                                                                                    Figure 4.  Hydrologic Unit/County Subareas (HUCOs)
                                                                                                                        Tones Indicate Individual HUCOs

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Figure 5. Estuarine Zones
                                                                          Figure 6.  Planned Isohaline Segmentation

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COASTAL COUNTIES

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Coastal and Non-Coastal Counties

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                      Counties in Estuarine Drainage Areas (EDAs)
ALABAMA

Coasia)'counties
Baldwin        Nubile

Mmcoastii'counties in E&As
Brooks         Choctaw        Clarke
Crenshaw       DecaturEscambia
Monroe         Thomas         Washington

CALIFORNIA
                              Coffee
                              Geneva
                              Wilcox
Coastal counties
Alameda        Contra Costa
Mendocino       Monterey
San Francisco   San Joaqum
Santa Cruz      Solano

Noncodstal counties in EDAs
Placer          San Benito
Yolo

CONNECTICUT

Coastal counties
Fairfield        Middlesex

Noncodstal counties inCDAs
Hartfom        Litchfield

DELAWARE
               Del Norte       Humbolt
               Napa           Orange
               San Luis Obispo  San Mateo
               Sonoma         Ventura
               San Bernardino   Siskiyo
               New Haven      New London
               Tolland
               Windham
Coastal counties
Kent

FLORIDA
New Castle
Sussex
Coastal counties
                              Conecuh
                              Grady
Covmgton
Houston
                              Los Angeles
                              Sacremento
                              Santa Barbara
                              Sutler
Marin
San Diego
Santa Clara
Trinity
Alachua
Calhoun
Dade
Franklin
Hardee
Indian River
Leon
Martin
Osceola
St. Johns
Suwannee
Washington
Baker
Charlotte
De Soto
Gadsden
Hendry
Jackson
Levy
Monroe
Palm Beach
St. Lucie
Taylor

Bay
Citrus
Dixie
Gilchrist
Hernando
Jefferson
Liberty
Nassau
Pasco
Santa Rosa
Union

Bradford
Clay
Duval
Glades
Highlands
Lafayette
Madfson
Okaloosa
Pinellas
Sarasota
Volusia

Brevard
Collier
Escambfa
Gulf
Hillsborough
Lake
Manatee
Okeechobee
Polk
Seminole
Wakulla

Broward
Columbia
Flagler
Hamilton
Holmes
Lee
Marion
Orange
Putnam
Sumter
Walton


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GEORGIA
 Coastal counties
Bryan          Camden
Chatham
Glynn
Liberty
Mclntosh
Noncoastal counties in EDAs
Appling Atkinson
Charlton Clinch
Irwln Jeff Davis
Screven Tattnall
LOUISIANA
Coastal counties
Acadia Ascension
Iberia Iberville
Orleans Plaquemines
St Martin St. Mary
West Baton Rouge
Noncoastal counties in EDAs
Allen Avoyelles
Pointe Coupee Rapides
Washington

Bacon
Coffee
Jenkins
Toombs


Assumption
Jefferson
St. Bernard
St. Tammany


Beauregard
Sabine


Ben Hill
Effingham
Long
Ware


Calcasleu
Jefferson Davis
St. Charles
Tangipahoa


East Feliciana
St. Helena


Brantley
Emanuel
Montgomery
Wayne


Cameron
Lafourche
St. James
Terrebonne


Evangeline
St. Landry


Bullock
Evans (city)
Pierce



East Baton Rouge
Livingston
St. John the Baptist
Vermilion


Lafayette
Vernon

MAINE

Coastal counties
Cumberland     Hancock
Washington     York

Noncoastal counties in EDAs
Androscoggin    Aroostook
Piscataquis     Somerset

MARYLAND

Coastal counties
Anne Arundel    Baltimore
Charles        Dorchester
St.  Mary's      Somerset

Noncoastal counties in EDAs
Caroline        Howard

MASSACHUSETTS

Coastal counties
Barnstable      Bristol
Norfolk         Plymouth

Noncoastal counties in EDAs
Berkshire       Hampden
Knox
Franklin
Lincoln
Kennebec
Sagadahoc
Oxford
Waldo
Penobscol
Baltimore City
Harford
Talbot
Montgomery
Dukes
Suffolk
Worcester
Calvert
Kent
Wicomlco
Caroline
Prince Georges
Worcester
Cecil
Queen Anne's
Essex
Middlesex
Nantucket

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 MISSISSIPPI
 Coastal counties
Hancock         Harrison        Jackson

 Noncoastal counties in EDAs
Amite           Franklin        George         Greene          Lamar          Lincoln
Marion          Pearl River     Perry          Pike            Stone           Walthall
Wayne          Wilkinson

NEW HAMPSHIRE

 Coastal counties
Rockingham      Stafford

 Noncoastal counties in EDAs
Belknap         Carroll         Coos           Grafton

NEW JERSEY
                                                             Hlllsborough     Merrlmack
 Coastal counties
Atlantic         Bergen
Essex           Gloucester
Ocean           Passaic

 Noncoastal counties in EDAs
Hunterdon       Morris

NEW YORK
                               Burlington      Camden
                               Hudson         Mercer
                               Salem          Somerset

                               New Jersey Continued
                               Sussex
Cape May
Middlesex
Union
Cumberland
Monmouth
                                                              Greene          Kings
                                                              Queens          Rensselaer
                                                              Weslchester
Coastal counties
Albany         Bronx           Columbia        Dutchess
Nassau         New York        Orange         Putnam
Richmond       Rockland        Suffolk         Ulster

Noncoastal counties in EDAs
Schenectady     Schohare        Sullivan

NORTH CAROLINA
 Coastal counties
Beaufort        Bertie          Brunswick      Camden        Carteret        Chowan
Craven         Currituck       Dare           Gates          Hertford        Hyde
New Hanover    Onslow         Pamlico         Pasquotank     Pender          Perqulmans
Tyrrell         Washington

 Noncoastal counties in EDAs
Anson          Bladen          Columbus       Cumberland     Duplin (city)     Edgecombe
Greene         Harnett         Johnson         Jones          Lenoir          Martin
Nash           Pitt            Richmond       Robeson        Scotland        Union
Wake (city)     Wayne          Wilson

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ORE60N
 Coastdl counties
Clatsop         Columbia        Coos           Curry          Douglas
Lincoln         Multnomah       Tillamook

 Noncoastal counties in EDAs
Clackamas      Josephine       Washington

PENNSLYVANIA

 Coastal counties
Bucks          Delaware       Philadelphia

 Noncoastal counties in EDAs
Chester        Lancaster       Montgomery

RHODE ISLAND

 Coastat counties
Bristol         Kent            Newport        Providence      Washington

SOUTH CAROLINA

 Coastal counties
                               Lane
Beaufort
Horry
Berkeley
Jasper
Charleston
Williamsburg
Colleton

Dorchester

Noncoastal counties in EDAs
Bamberg
Florence
Marlboro
TEXAS
Berkeley
Hampton
Orangeburg

Chesterfield
Kershaw
Sumler

Clarendon
Lancaster


Darlington
Lee


Coastal counties
Aransas
Harris
Nueces
Willacy
Brazona
Jackson
Orange

Calhoun
Jefferson
Refuglo

Cameron
Kenedy
San Patriclo

Chambers
Kleberg
Victoria

Noncoastal counties in EDAs
Angelina
Duval
Jim Hogg
Live Oak
Waller
Austin
Fort Bend
Jim Wells
McMullen
Washington
Bee
Goliad
Jasper
Newton
Webb
Brooks
Gonzales
Karnes
San Jacinto

Colorado
Hardln
Lavaca
Starr

                                                                            Georgetown
                                                                            Dillon
                                                                            Marion
                                                                            Galveslon
                                                                            Matagorda
                                                                            Wharlon
                                                                            DeWitt
                                                                            Hidalgo
                                                                            Liberty
                                                                            Tyler
VIRGINIA

Coastdl counties
Accomack       Alexandria       Arlington
Chesterfield     Colonial Heights  Essex
Fredericksburg  Gloucester       Hampton
Caroline
Fairfax
Hanover
Charles City
Fairfax City
Henrico
Chesapeake
Falls Church
Hopewell

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Coastal counties of Virginia continued
Isle of Wight     James City      King and Queen   King George
Manassas        Manassas Park  Mathews        Middlesex
Norfolk          Northampton    Northumberland  Petersburg
Prince George    Prince William   Richmond        Richmond (city)
Suffolk          Surry          Virginia Beach   Westmoreland
Noncoasta! counties in EDAs
Albemarle       Amelia
Fauquier         Fluvanna
Orange          Powhatan

WASHINGTON

Coastal counties
Clallam          Clark
King            Kitsap
Skagit          Snohomish

Noncoastal counties in EDAs
Lewis           Skamania
Appomattox     Buckingham
Goochland       Loudon
Prince Edward  Southampton
Cowlitz
Mason
Thurston
Gray's Harbor
Pacific
Wahkiakum
                               King William
                               New Kent
                               Poquoson
                               Spotsylvania
                               Williamsburg
                Cumberland
                Louisa
Island
Pierce
Whatcom
                               Lancaster
                               Newport News
                               Portsmouth
                               Stafford
                               York
                Dinwlddle
                Nottoway
Jefferson
San Juan

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Alabama
                                  Noncoastal Countg in
                                  Estuarine Drainage Area
0
1 —

20
-1 	 1 	 L
Miles
40
	 1


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California
           Coastal County
           Noncoastal County in
           Estuarme  Drainage Area
     0       50      100      150     200
                   Miles

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Connecticut
                                                       Coastal County


                                                       Noncoastal County in

                                                       Estuarin* Drainage Area
0   5  10  15  20  25
 i   i   ii    i    I


        Miles

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Delaware
0
1 —

5 10 15
— I 	 1 i
Miles
20
	 1

                              Coastal County

                              Noncoastal County in
                              Estuarine Drainage Area

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Florida
         20 40 60
          I   I   I
 80  100
-I	1
             Miles
Coastal County

Noncoastal County in
Estuarine Drainage Area

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Georgia
         20    40    60    80
              Miles
Coastal County

Noncoastal County in
Estuarine Drainage Area

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Louisiana
0
1
20 40 80
1 1 1
80 100
Miles
                                                                                   Coastal County

                                                                                   Noncoastal County in
                                                                                   Estuarine Drainage Area

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Maine
                                Coastal County

                                Noncoastal County in
                                Estuarine Drainage Area
0
1—

20 40
— 1 	 1 i 	 1 	 1
Miles
60
	 1


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Maryland
        10   20   30   40  50
             Miles
Coastal County

Noncoastal County in
Estuarine Drainage Area

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Massachusetts
   0    10    20   30
    i  i   i  i  i   i  i
         Miles
I                          Coastal County
Noncoastal County in
Estuarine Drainage Area

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Mississippi
0
1 	

20 40
	 1 i —
Miles
60
— i

                             Coastal County

                             Noncoastal County in
                             Estuarine Drainage Area

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New Hampshire
     Coastal County


     Noncoastal County in

     Estuarine Drainage Area
      10
20   30
 i  i  i
       Miles

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New Jersey
     Coastal County

     Noncoastal County in
     Estuarine Drainage Area
       10
20
 30
=1
         Miles

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New York
    0    20   40    60    80   100
              Miles
Coastal County

Noncoastal County in
Estuarine Drainage Area

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North Carolina
        20   40  60    80  100
              Miles
Coastal County

Noncoastal County in
Estuarine Drainage Area

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Oregon
                                                               Coastal County

                                                               Noncoastal County in
                                                               Estuarine Drainage Area
25    50     75     100
     Miles

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Pennsylvania
                                                                   Coastal County

                                                                   Noncoastal County In
                                                                   Estuarine Drainage Area
Miles    50


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Rhode Island
      Coastal County

      Noncoastal County in
      Estuarine Drainage Area
0
1
5
10
1
15
1
20
Miles

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South Carolina
       Coastal County

       Noncoastal County in
       Estuarine Drainage Area

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Texas
        Coastal County


        Noncoastal County
        in Estuarine Drainage Area
               100
                I


               Miles
 150    200
_|	I

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Virginia
         20   40   60   80   100
               Miles
Coastal County

Noncoastal County in
Estuarine Drainage Area

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Washington
                                                              Coastal County

                                                              Noncoastal County in
                                                              Estuarine Drainage Area
0     25     50    75     100
            Miles

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ESTUARINE DRAINAGE AREAS

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Estuarine Drainage Areas

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USGS  Cataloging  Units by  Estuary
 Passamaquoddy Bay

 01050001   St. Croix.MN
 01050002   Maine Coastal, MN

 Englishman Bay

 01050002   Maine Coastal, MN

 Narragaugus Bay

 01050002   Maine Coastal. MN

 Blue Hill Bay

 01050002   Maine Coastal, MN

 Penobscot Bay

 01050002   Maine Coastal, MN
 01020005   Lower Penobscot, MN

 Muscongus Bay

 01050003   St. George-Sheepscot, MN
 01050002   Maine Coastal, MN

Sheepscot Bay

01050003   St. George-Sheepscot, MN
01030003   St. George-Sheepscot, MN
01040002   Lower Androscoggin, MN/NH

Casco Bay

01060001   Presumpscot, MN

Saco Bay

01060001   Presumpscot, MN
01060002   Saco, MN/NH

Great Bay

01060003   Piscataqua-Salmon Falls.MN. NH, MA

 Merrimack River

 01070002   Merrimack, MA/NH

 Boston Bay

01090001   Charles, MA

Cape Cod

01090002   Cape Cod, MA/RI
Buzzards Bay

01090002   Cape Cod, MA/RI

Narragansett Bay

01090004   Narragansett, MA/RI

Gardiners Bay

02030202   Southern Long Island. NY

Long Island Sound

02030201   Northern Long Island, NY
02030202   Southern Long Island. NY
02030102   Southern Long Island, NY
01100007   Long Island Sound, CT
01100006   SaugatucK, CT/NY
01100005   Housatonic, CT/MA/NY
01100004   Quinnipiac, CT
01080205   Lower Connecticut, CT/MA
01100002   Shetucket, CT/MA
01100003   Thames, CT

Connecticut River

01080205   Lower Connecticut, CT/MA

Great South Bay

02030202   Southern Long Island, NY

Hudson/Raritan

02030202   Southern Long Island. NY
02030201   Northern Long Island, NY
02030101   Northern Long Island. NY
02020008   Hudson-Wappinger, NY
02020006   Middle Hudson, MA/NY
02020007   Rondout, NJ/NY
02030103   Hackensack-Passai,  NY/NJ
02030105   Raritan, NJ
02030104   Sandy Hook-Staten Island, NY/NJ

Bamegat Bay

02040301   Mullica-Toms. NJ

Delaware Bay

02040204   Delaware Bay, DL/NJ
02040207   Broadkill-Smyrna, DL
02040205   Brandywine-Christina, DL/MD/PA
02040202   Lower Delaware NJ/PA
02040201   Crosswicks-Nesahaminy, NJ/PA
02040202   Lower Delaware. NJ/PA
02040206   Cohansey-Maunce, NJ

-------
USGS Cataloging Units  by Estuary
Chincoteague

02060010   Chincoteague, MD/DI/VA

Chesapeake Bay

02070010   Middle Potomac-Anacostia-
           Occoquan, DC/MD/VA
02070011   Lower Potomac. MD/VA
02080104   Lower Rappahannock. VA
02080102   Great Wicomico-Piankatank, VA
02080101   Lower Chesapeake Bay, VA
02080109   Western Lower Delmarva, VA
02080105   Mattaponi.VA
02080106   Pamunkey. VA
02080107   York.VA
02080205   Middle James-Willis. VA
02080206   Lower James. VA
02080207   Appotamox, VA
02080208   Hampton Roads. VA
02080108   Lynnhaven-Poquoson, VA
02080101   Lower Chesapeake Bay, VA
02060006   Patuxent. MD
02060001   Upper Chesapeake Bay, MD
02060004   Severn, MD
02060005   Choptank. DL/MD
02060003   Gunpowder-Patapsco, MD/PA
02060002   Chester-Sassafras, DL/MD/PA
02060007   Blackwater-Wicomioo, DL/MD
02060008   Nanticoke. DL/MD
02060009   Pocomoke, DL/MD/VA

Potomac River

02070010   Middle Potomac-Anacostia-
           Occoquan, DC/MD/VA
02070011   Lower Potomac. MDA/A

Rappahannock River

02080104   Lower Rappahannock, VA

York River
02080107
02080106
02080105
York.VA
Pamunkey.VA
Mattaponi, VA
James River

02080202   Maury, VA
02080206   Lower James, VA
02080207   Appotamox. VA
02080205   Middle James-Willis, VA

Albemarle Sound
03010203
03010107
03010205
Ghowan, NC/VA
Lower Roanoke. NC
Albemarle, NC/VA
Pamlico Sound

03020105   Pamlico Sound, NC
03020106   Bogue-Core Sounds, NC
03020104   Pamlico, NC
03020103   Lower Tar. NC
03020202   Middle Neuse, NC
03020204   Lower Neuse. NC
03010205   Albemarle, NC/VA

Pamlico and Pungo Rivers

03020104   Pamlico. NC
03020103   Lower Tar, NC

Neuse River

03020202   Middle Neuse, NC
03020204   Lower Neuse. NC

Bogue Sound

03020106   Bogue-Core Sounds. NC

New River

03030001   New, NC

Cape Fear River

03030006   Black, NC
03030007   Northeast Cape Fear, NC
03030005   Lower Cape Fear, NC

Winyah Bay

03040207   Carolina Coastal-Sampil, NC/SC
03040206   Waccamaw, NC/SC
03040201   Lower Pee Dee, NC/SC
03040205   Black, SC
03040202   Lynches, NC/SC
03040204   Little Pee Dee. NC/SC

Charleston Harbor

03050202   South Carolina Coastal. SC
03050201   Cooper SC

Santee River

03050112   Santee, SC

St. Helena Sound

03050205   Edisto, SC
03050208   Broad-St. Helena, GA

Broad River

03050208   Broad-St.Helena. GA/SC

-------
USGS Cataloging Units by  Estuary
Savannah Sound
03050208   Broad-St. Helena, GA/SC
03060109   Lower Savannah, GA/SC

Ossabaw Sound

03060204   Ogeechee Coastal, GA
03060202   Lower Ogeechee, GA

St. Catherines/Sapelo Sound

03060204   Ogeechee Coastal, GA

Altamaha River

03070106   Altamaha, GA

St. Andrew/St. Simon Sound

03070203   Cumberland-St. Simons, GA
03070201   Satilla, GA

St. Johns River

03080101   Upper St. Johns, PL
03080103   Lower St. Johns, FL

Indian River

03080203   Vero Beach, FL
03080202   Cape Canaveral, FL

Biscayne Bay

03090202   Everglades, FL

Ten Thousand Islands

03090202   Everglades, FL
03090204   Big Cypress Swamp, FL

Charlotte Harbor

03100103   Charlotte Harbor. FL
03090205   Caloosahatchee, FL
03100101   Peace, FL
03100102   Myakka, FL

Caloosahatchee River

03090205   Caloosahatchee. FL

Tampa Bay

03100206   Tampa Bay, FL
03100205   Hillsborough, FL
03100204   Alafia, FL
03100203   Little Manatee, FL
03100202   Manatee, FL
Suwanee River

03110101   Waccasassa. FL
03110102   Econfina-Steinhatchee, FL
03110205   Lower Suwanee. FL

Apalachee Bay

03110103   Aucilla FL/GA
03120001   Apalachee Bay-St. Marks, FL/GA
03120003   Lower Ochlockonee, FL/GA

Apalachicola Bay

03130013   New.FL
03130011   Apalachicola. FL/GA
03130014   Apalachicola Bay. FL

St. Andrew Bay

03140101   St. Andrew-St. Joseph Bays. FL

Choctawhatchee Bay

03140102   Choctawhatchee Bay,FL
03140203   Lower Choctawhatchee.AL/FL

Pensacola Bay

03140105   Pensacola Bay. FL
03140103   Yellow, AL/FL
03140104   Blackwater, AL/FL
03140304   Lower Conecuh. AL/FL
Perdido Bay
03140107
03140106

Mobile Bay
Perdido Bay, AL/FL
Perdido, AL/FL
03160205   Mobile Bay, AL
03160204   Mobile-Tensaw, AL
03160203   Lower Tambigee, AL
03150204   Lower Alabama, AL

Miississippi Sound

03170009   Mississippi Coastal, AL/MS
03170008   Escatawpa, AL/MS
03170006   Pascagoula, MS
03180004   Lower Pearl. LA/MS
08090201   Liberty Bayou-Tchefuncta. LA
08070205   Tangipahoa, LA/MS
08090202   Lake Ponchartrain, LA
08090203   Eastern Louisiana Coastal, LA
08070204   Lake Maurepas, LA
08070203   Tickfaw, LA/MS
08070202   Amite, LA/MS

-------
USGS  Cataloging  Units by Estuary
Lake Borgne

08090203   Eastern Louisiana Coastal. LA
03180004   Lower Pearl, LA/MS
08090202   Lake Pontchartrain, LA
08090201   Liberty Bayou-Tchefuncta, LA
08070205   Tangipahoa. LA/MS
08070203   Tickfaw, LA/Ms
08070204   Lake Maurepas, LA
08070202   Amite. LA/MS

Lake Ponchartrain

08090202   Lake Pontchartrain, LA
08090201   Liberty Bayou-Tchefuncta, LA
08070205   Tangipahoa, LA/MS
08070203   Tickfaw, LA/MS
08070202   Amite, LA/MS
08070204   Lake Maurepas, LA

Miississippi Delta Region

08090203   Eastern Louisiana Coastal, LA
08090100   Lower Mississippi-New Orleans, LA
08090301   East Central Louisiana Coastal, LA
08090302   West Central Louisiana Coastal, LA
08070100   Lower Mississippi-Baton Rouge, LA
08070201   Bayou Sara-Thompson, LA/MS

Atchafalaya

08080101   Atchafalaya, LA
08080102   Bayou Teche, LA
08080103   Vermilion, LA

Calcasieu Lake

08080206   Lower Calcasieu, LA

Sabine Lake
12040201
12010005
12020003
Sabine Lake, LA/TX
Lower Sabine, LA/TX
Lower Neches. TX
Galveston Bay

12040202   East Galveston Bay, TX
12040203   North Galveston Bay, TX
12030203   North Galveston Bay, TX
12040104   Buffalo-San Jacinto, TX
12040204   West Galveston Bay, TX
12040201   Sabine Lake. LA/TX

Brazos River

12070104   Lower Brazos. TX
                                            Matagorda Bay

                                            12100402   West Matagorda Bay, TX
                                            12100401   Central Matagorda Bay, TX
                                            12090302   Lower Colorado, TX
                                            12100102   Navidad.TX
                                            12100101   Lavaca. TX

                                            San Antonio Bay

                                            12100403   East San Antonio Bay. TX
                                            12100404   West San Antonio Bay, TX
                                            Aransas Bay
                                             12100405
                                             12100406
                                             12100407
           Aransas Bay, TX
           Mission, TX
           Aransas, TX
                                            Corpus Christ! Bay

                                            12110201    North Corpus Christ! Bay. TX
                                            12110202    South Corpus Christ! Bay. TX
                                            12110111    Lower Nueces, TX

                                            Laguna Madre

                                            12110203    North Laguna Madre, TX
                                            12110205    Baffin Bay, TX
                                            12110204    San Fernando, TX
                                            12110206    Palo Blanco, TX
                                            12110207    Central Laguna Madre, TX
                                            12110208    South Laguna Madre. TX
                                             Baffin Bay

                                             12110205
                                             12110204
           Baffin Bay, TX
           San Fernando, TX
San Diego Bay

18070304   San Diego, CA

San Pedro Bay

18070104   Santa Monica Bay, CA
18070105   Los Angeles. CA
18070106   San Gabriel. CA
18070201   Seal Beach, CA

Santa Monica Bay

18070104   Santa Monica Bay, CA

Monterey Bay

18060001   San Lorenzo-Sequel, CA
18060011   Ahsal-Elkhorn Sloughs, CA
18060012   Carmel.CA

-------
USGS Cataloging Units by Estuary
San Francisco Bay
1 8050002 San Pablo Bay, CA
18050001 SuisunBay, CA
1 80201 09 Lower Sacramento, CA
1 8040003 San Joaquin Delta, CA
18050004 San Francisco Bay, CA
18050003 Coyote, CA

Suisun Bay

18050001 SuisunBay. Ca
1 80201 09 Lower Sacramento, CA
Eel River

18010105 Lower Eel. CA
Humboldt Bay
1 801 01 02 Mad-Redwood, CA
Klamath River
1 801 0209 Lower California, CA/OR
Coos Bay
17100304 Coos, OR
Winchester Bay
17100303 Umpqua, Or
Columbia River
Puget Sound
17110001 Fraser.WA
1 71 10021 Crescent-Hoko. WA
171 10020 Dungeness-Elwha, WA
17110018 Hood Canal, WA
17110019 Puget Sound, WA
17110015 Nisqually, WA
17110014 Puyallup.WA
17110013 Duwamish.WA
1 71 1001 2 Lake Washington, WA
17110011 Snohomish, WA
17110008 Stillaguamish, WA
1711 0007 Lower Skagit, WA
17110004 Nooksack. WA
1 71 10002 Strait of Georgia, WA
171 10003 San Juan Islands, WA
Hood Canal
17110018 Hood Canal, WA
17110019 Puget Sound, WA
Skagit Bay
17110019 Puget Sound, WA
17110011 Snohomish, WA
171 10008 Stillaguamish, WA
1711 0007 Lower Skagit, WA



17080006   Lower Columbia, OR/WA
17080003   Lower Columbia-Clatskanie, OR/WA
17080005   Lower Cowlitz, WA
17080002   Lewis, WA
17080001   Lower Columbia-Sandy, OR/WA
17090012   Lower Willamette, OR

Willapa Bay

17100106   Willapa Bay, WA

Grays Harbor

17100105   Grays Harbor, WA
17100104   Lower Chehalis, WA

-------
              01020003
                                               CHARIOT
                                                                                  Drainage Divide
                                                                NIEW  BRUNSWICK
     MAN
   WASHINGTON
                       Drainage Divide
       JoMCuinnlpaJun,Map*9> Qg* at»«r Sajto.   .
, MtP.OtO U S. QaototfnaJ Sonny, flan of U*m Hytataplc. Unit U»p
 1974, KM 1 500.000 (r*jnd W«Ur» M*CkXM«
                                                                                                                  Passamaquoddy Bayi
                                                                                                                  ME,  NB
                        New Brunswick. Canada


                               Ftwtat
                              Drainage
                               Area
                                                                                                                                           Estuanne
                                                                                                                                           Drainage
                                                                                                                                            Area
 [ Tide Gage


 [ Flow Gage


  Head of Tide


 I Estuarine Drainage Area (EDA)


| Tidal  Fresh Zone


  Mixing Zone


  Seawater Zone


  Hydrologic Cataloging Unit Boundary


  County Boundary


  Salinity Zone Boundary - Low Variability


  Salinity Zone Boundary - Moderate Variability


  Salinity Zone Boundary - High Variability
                                                                                                                        Off*c» of Ocaanograpfty and Marin
                                                                                                                        Naffortat Ocean Service
-------
                                                                    NEW
                                                            BRUNSWICK
                                               WASHINGTON
                                                                 C'
                                      ATLANTIC
OCEAN
             ol Mft*w HytKotogic Un« Map 19T
1 500 000 USG5 Accounting Units o> the HMtontf WM* DMa
1979 sc«to i 7500000 NOAA/NOS Naut
-------
                                                                                   WAS HIN GTON
                                                                                                             N
                                                                                     OCEAN
US GacttpcalSurvey Suitof Mattw. HydrotogKUnff Map. 1974 tcato
1 300 000 USOS Accounting UrMU of the Nalarul W«l«r D«ti MWwotli.
IB7» •(•% ' 7.SOO.OOO NOAAMOS NcmlcaJ Cnwl No 13324. May
I9«1 tcrt* ! 40000
                                                                                 16
                                                               10         20
                                                                                     30
                                                                                               24 MILES
                                                                                                 40  KILOMETERS
                                                                                                                     Narraguagus Bay
                                                                                                                     ME
[•+•[ Tide Gage

I • | Flow Gage

[~A~| Head of Tide

  J Estuarine Drainage Area (EDA)

   I Tidal Fresh Zone

  H Mixing  Zone

  JJ Seawater Zone

[~*~j Hydrologic Cataloging Unit Boundary

p- "| County Boundary

  B Salinity Zone Boundary - Low Variability

  g Salinity Zone Boundary - Moderate Variability

11! 11 Salinity Zone Boundary - High Variability
      Office of Ocemnoyrfphy and Mmrtnc Assessment
      Nitionml Qeemn Service/NCAA
                                                                                                                                                          1.03

-------
  PENOBSCOT


    01020005
S HI  N G TO  N
                                                            HANCOCK
                                                                                    Drainage   \
                                                                                     Divide
US G«otoQ)C* Sixvwy 9«eon*I WM*< Data
1979. *c«W i 7500000 NOAA/NOS Nautical Ch»rt No 13316, Jun«
   start I 40 000
                                                                                                          40  KILOMETERS
                                                                                                                               Blue  Hill  Bay
                                                                                                                               ME
                                                                 Esluanne
                                                                   .  r.
                                                                  Area
                                                                                                                               l + l Tide Gage

                                                                                                                               |  •> | Flow Gage

                                                                                                                               |  A | Head of Tide

                                                                                                                                   I Estuarine Drainage Area (EDA)

                                                                                                                                  I Tidal Fresh Zone

                                                                                                                                  || Mixing Zone

                                                                                                                                  II Seawater Zone

                                                                                                                                    Hydrologic Cataloging Unit Boundary

                                                                                                                               — - County Boundary

                                                                                                                                  M Salinity Zone Boundary • Low Variability

                                                                                                                               ^ffl Salinity Zone Boundary - Moderate Variability

                                                                                                                               Hill Salinity Zone Boundary - High Variability
                                    Ocean Atmeaamtntt Division
                                    Office of Oceanography and Marine Assessment
                                    Nation*! Ocean Service ' NOAA
                                                                                                                                                                          j  f\A

-------
                    24 MILES


20                    40  KILOMETERS
                                          Penobscot Bay
                                          ME
                                            | Tide Gage


                                            I Flow Gage


                                             Head of Tide


                                           J Estuarine Drainage Area (EDA)


                                           | Tidal Fresh Zone


                                           I Mixing Zone


                                           J] Seawater Zone


                                             Hydrotogic Cataloging Unit Boundary


                                             County Boundary


                                             Salinity Zone Boundary - Low Variability


                                             Salinity Zone Boundary - Moderate Variability


                                             Salinity Zone Boundary - High Variability
Otftcm ot OcMoyapfty «
                                                                             1.05

-------
                 16	24  MILES
                 dliilhljgggj^

10         20         30         40  KILOMETERS
                                                   Muscongus Bay
                                                   ME
                                                   I+1 Tide Gage


                                                   [•] Flow Gage


                                                   |  A [ Head of Tide


                                                      J Estuarine Drainage Area (EDA)


                                                      I Tidal Fresh Zone


                                                      I Mixing Zone


                                                      JJ Seawater Zone


                                                   j—^ Hydrologic Cataloging Unit Boundary


                                                   [~ -| County Boundary


                                                      I Salinity Zone Boundary • Low Variability


                                                      fl Salinity Zone Boundary - Moderate Variability


                                                      Ij Salinity Zone Boundary - High Variability
Strmtlc 
-------
UB O«otagto*8wv«y. SMtolMttn*. Hydroto^c un« M«p. H7*.
1 900 000 USQS Acccuntng thw» o( Itw NiliofVt Wilw Dtfa
It7» KMt 1 7.500 000 NOAA/NO6 Nuriictf Ctwt, No 132V9. July
1M4. toff 140.000
24  MILES

  ^
  40 KILOMETERS
                                                                                                                            Sheepscot  Bay
                                                                                                                            ME, NH
                                                                                                                                     Fk/vW
                                                                                                                                    Dnintffti
                                                                                                                                                             Estiarme
                                                                                                                                                             Drainage
                                                                                                                                                              Ant
                                                                                                                            \-^-\  Tide Gage

                                                                                                                            [•]  Flow Gage

                                                                                                                            ["A]  Head of Tide


                                                                                                                              J  Estuarine Drainage Area (EDA)

                                                                                                                              I  Tidal  Fresh Zone

                                                                                                                              H  Mixing Zone

                                                                                                                              jj  Seawater Zone


                                                                                                                            p™*J  Hydrologic Cataloging Unit Boundary

                                                                                                                            |~ H  County Boundary

                                                                                                                              I  Salinity Zone Boundary - Low Variability

                                                                                                                              g  Salinity Zone Boundary - Moderate Variability

                                                                                                                              11  Salinity Zone Boundary - High Variability
                                                                                                                                  Srr»r*0*c AMVMJTwnr Brmnch
                                                                                                                                  Ocevn Au«itmenf» DMfton
                                                                                                                                  Ottlcr of Ocfinognphy and Mar
                                                                                                                                  Nmttonml Ocetn SfrvictfNOAA
                                                                1.07

-------
                       OXFORD
                                      01040002
                                                                                   01030003

                                                                                01050003
MAINE
            /
                                               ANDROSCOGGIN
                                                                             SAGADAHOC
                                                                                                i
                   V  CUMBERLAND
       01060002
   01060003
US G«otog«cil Sixvwy SUt« otUamc, HydrotogK Und M*) 1974.
i 900 000 USGS Accoumtng Urvu M ttw NwionM Witv Dna Nvtwork,
1»7«, *c*tt 1 7.500000 NOAAMOS N»m«* Chut No 13290, June
1962 scate 1 40 DOO
                                                                                      40  KILOMETERS
                                                                                                       Casco  Bay
                                                                                                       ME
                                                                                                                            Estuanne
                                                                                                                            Drainage
                                                                                                                             Area
                                                                I +1  Tide Gage

                                                                I • I  Flow Gage

                                                                | A |  Head of Tide

                                                                   J  Estuarine Drainage Area (EDA)

                                                                   |  Tidal Fresh Zone

                                                                   H  Mixing Zone

                                                                   II  Seawater Zone

                                                                [~^  Hydrologic Cataloging Unit Boundary

                                                                p~ •]  County Boundary

                                                                   M  Salinity Zone Boundary - Low Variability

                                                                   H  Salinity Zone Boundary - Moderate Variability

                                                                IjjJJI  Salinity Zone Boundary • High Variability
                                                                      Strategic Aa3fa»mtnt Branch
                                                                      Ocetn Ataeaamenta Dlvia/on
                                                                      Oftlff at OctmnogriphTf *na Hfrlnr A
                                                                      Hmtlonil Ocein Service'HOAA
                                                                                                                                          1.08

-------
                                    JMAINEV^        01040002

                                                                /AND ROSCOGGI N,
                                                               CUMBERLAND
          N EW
HAMP SH
 ^

  V~,       01060003
                         \
I  RE
                           X
U 8. Ofologear Bwvty, 9l«W o* M«n«. HyOofcjgic Un* M^. t§74.
1»7». Kate 1 7 500000 NOAAMO* Hklic«l Own No 1
1MI tea* 1 20.000
                                h
N
                                                              24 MILES


                                                                40 KILOMETERS
                                                                                                     Saco  Bay
                                                                                                     ME, NH
                                                                                                    [+| Tide Gage


                                                                                                    | • | Flow Gage


                                                                                                    [ A | Head of Tide


                                                                                                        I Estuarine Drainage Area (EDA)


                                                                                                       | Tidal  Fresh Zone


                                                                                                      p Mixing Zone


                                                                                                      J] Seawater Zone


                                                                                                    p^ Hydrologic Cataloging Unit Boundary


                                                                                                    p- q County Boundary


                                                                                                      J Salinity Zone Boundary - Low Variability


                                                                                                      B Salinity Zone Boundary - Moderate Variability


                                                                                                      M Salinity Zone Boundary - High Variability
                                                                                                                                     1.09

-------
       vC A R R O L I
                                                     01060002
          NEW
HAMPSHIRE
                                                                       MAINE

                                                                   Drainage Divide
    01070002     \
                                                       01060003
MERRIMACK
                                                           Drainage Divide
                                         01090001
 U 3 Q*o*og«-»l Ivwy, S>xl« of MOTT HamcMfw* HytXologK
 1974 tcate i 500.000 Sui* oi Makw. Hyd-otog^: Untt Map 1974
 1 500.000 USOS Accounting Units ot the Naitonai Waif Dat
 1979, tcale ' 7.500.000 NOAA/NOS NMullcal Chart No i3?«l. Apr!
        20000
                                                                                           40 KILOMETERS
                                                                                                              Great Bay
                                                                                                              NH, ME
                   - Estuarine
                    Drainage
                     Area
|-^-| Tide Gage


| > | Flow Gage


| A | Head of Tide


   I Estuarine Drainage Area (EDA)


  | Tidal Fresh Zone


  || Mixing Zone


  II Seawater Zone


p~*"\ Hydrologic Calaloging Unit Boundary


[~ -J County Boundary


  H Salinity Zone Boundary - Low Variability


  H Salinity Zone Boundary - Moderate Variability


Jill) Salinity Zone Boundary - High Variability
                tl Snnch
     Ocfin AS9f*srrtfnls Division
     Oftlcf ol OcffnogrHpfiy ind Mtnnr Am
     National Ocnn Srrvice 'NOAA
                                                                                                                                                 1.10

-------
                                                                  STRAFFORD
             ERRIMACK  / I 01060003   /
                                           ROCKING
  01070002
                                 HAM PSHI
   HILLSBOROUGH  v
  01070004
01090001


    ESSEX
                   MIDDLESEX
                  01070005
 MASSACHUSETTS
WORC HESTER
  MM. llir>ii»gl UM MK. 074, m» 1 800.000 MM MnnKg
    01 «M HtfixW WWW [Ma Ntfwort. igTB KM* 1:7300.000
  MOAAINOS NUMI CIV. No 19B. Aoct lit). 1OH 1 M.OOO
                                    Merrimack  River
                                    MA,  NH
[ + 1 Tide Gage

| > | Flow Gage

| A | Head of Tide


  J Estuarine Drainage Area (EOA)


  | Tidal Fresh Zone


  H Mixing Zone


    Seawaler Zone


    Hydrologic Cataloging Unit Boundary


  | County Boundary


    Salinity Zone Boundary - Low Variability


    Salinity Zone Boundary - Moderate Variability


    Salinity Zone Boundary - High Variability
                                                                                                                            1.11

-------
                                                             01060003
01070004    01070002    \
               01070005
                                       01090001
                                                             01090002
01090003
                                       01090004
 MM. HKM00C UM Hk*. WM. m> 1 900.000 USDS AoowKg
   0( (Iw flrtlull^ WlMI DM* NMww% 1979. KaW ! 7 MC OOO
 NOMUNOSNUIMChM. M> 1K70, Nnwitef 1»2 ion • K.OOO
Boston Bay
MA
|+| Tide Gage

| • | Flow Gage

| A | Head of Tide

  J Estuarine Drainage Area (EDA)

  I Tidal Fresh Zone

  H Mixing Zone

  JJ Seawater Zone

    Hydrologic Cataloging Unit Boundary

   j County Boundary

    Salinity Zone Boundary - Low Variability

   | Salinity Zone Boundary - Moderate Variability

    Salinity Zone Boundary - High Variability
     StrmtegK A*»e**m+nt Brmnch
     Qctfti A**#**mentM Division
     Office of Octinogntphy tnd W*rfo«
     Hmttonml Octmn Service/NOAA
                                                                                                                       1.12

-------
                                                                       OCEAN
         01090001
                                                                       Drainage Divide
          PLYIMOUTH
       090004

        \          i 01090002
       SSAC/HUSETTS
MM. Hydrotogle Unit (tap. 1974, »caii 1 600,000
Unltt ol ih» Nattooal Wttw 0«* N«wofk, 1779. •<*!• 1 7,500.000
     Niutteal Chwl. No 13246. Jufy 1982. K*h) 1 80.000
                                                                                     40 KILOMETERS
                                                                                                      Cape Cod Bay
                                                                                                      MA
                                                                                                                                      Fluvial
                                                                                                                                     Drainage
                                                                                                                                      Area
                                                                                                                 Massachusetts
l + l Tide Gage

| • | Flow Gage

["A"| Head of Tide

   I Estuarine Drainage Area (EDA)

Ml Tidal Fresh Zone

    Mixing Zone

    Seawater Zone

    Hydrologic Cataloging Unit Boundary

    County Boundary

    Salinity Zone Boundary - Low Variability

    Salinity Zone Boundary - Moderate Variability

    Salinity Zone Boundary - High Variability
           r Brttch

OWc* ol Octinognpby mnd U»f1n»
N.llon.l Oc,,n &nlc*/NOAA
                                -t .40
                                I . I O

-------
                                  01090001
                                  CH USETTS
01090003
            01090004

           BRISTOL
                                                                      BARN STABL
                                                                                 40 KILOMETERS
                                                                                                  Buzzards Bay
                                                                                                  MA
|4-| Tide Gage


I • I Flow Gage


["!"[ Head of Tide


  J Estuarine Drainage Area (EDA)


  | Tidal Fresh Zone


  • Mixing Zone


  JJ Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


f~ "\ County Boundary


  • Salinity Zone Boundary - Low Variability


    Salinity Zone Boundary - Moderate Variability


    Salinity Zone Boundary - High Variability
     Otttct ol Ocfmncortfhj
     Hnk>ml Oc«»n S»rvK«/
                                                                                                                   mnd Umrtnf Atttumtnt
                                                                                                                                  1.14

-------
                                 NORFOLK
  01100001
                                                                   C H IMS E      T S
                  01090003
                                                                       PLY MIOUTH
               01090004
       WASHINGTO
          01090005
MM. Hyttok0c UK M*>. <"', KM I SOO.OOO USDS Kountig
UfM a M NMoM WM> DM IHI»»ll. tin. IBM 1:7.K».«»
NOMM08 NMMI CMt No. IJZM. U« HO KM 1;«,000
16          24  MILES

    «•*.
    30       40 KILOMETERS
                                                                                                 Narragansett  Bay
                                                                                                 MA, Rl
                             |+| Tide Gage

                             | • | Flow Gage

                             [~A~| Head of Tide

                               J Estuarine Drainage Area (EDA)

                               | Tidal Fresh Zone

                                 Mixing Zone

                                 Seawater Zone

                                 Hydrologic Cataloging Unit Boundary

                                 County Boundary

                                 Salinity Zone Boundary - Low Variability

                                 Salinity Zone Boundary - Moderate Variability

                                 Salinity Zone Boundary - High Variability
Srrvfvgfc 4*M*»m*nr Brmnch

Otttct of Oc**nogr»ptiy tnd
HUfon* OCM/I S*
-------
U S OMMogkai Swvty. SUM <* MM Ym Hy*otogte Un* «*p ltT4,
                  UnM o> !n« MMK>n«I W««* 0«l Nw
   -f79 tcato i 7.900,000 NOAA^tOS NWJTICH Ctwt No
          40.000
                                                                                                                         Gardiners  Bay
                                                                                                                         NY
                                                                                                                              Tide Gage

                                                                                                                             | Flow Gage

                                                                                                                              Head of Tide

                                                                                                                           J Estuarine Drainage Area (EDA)

                                                                                                                           | Tidal Fresh Zone

                                                                                                                           | Mixing Zone

                                                                                                                            II Seawatar Zone

                                                                                                                         p^ Hydrologic Cataloging Unit Boundary

                                                                                                                         f~ •) County Boundary

                                                                                                                           | Salinity Zone Boundary - Low Variability

                                                                                                                             I Salinity Zone Boundary - Moderate Variability

                                                                                                                              Salinity Zone Boundary - High Variability
                                                                                                                                                                 1.16

-------
                                                 MASSACHUSE       TS
                       (CONNECTICU
Drainage Divide
       8      16     24  MILES

      • *•  '   |    I,
0    10   20    30   40  KILOMETERS
HpMO*c UM Hv. 1174. leak 1WO.nO. UMS ACKXMM UMM (X
rw HMIIMM WNMr DM NMWorfc. T171. «c«M 1 7 JOOgOOO NOMMOS
                                                                                                                  Long Island Sound
                                                                                                                  NY,  CT,  MA
                                                                                                                                                    Fluvial
                                                                                                                                                    Drainage
                                                                                                                  |+| Tide Gage


                                                                                                                  I 9 I Flow Gage

                                                                                                                  ["A] Head of Tide


                                                                                                                    J Estuarine Drainage Area (EDA)


                                                                                                                    | Tidal Fresh Zone

                                                                                                                    • Mixing Zone


                                                                                                                    11 Seawater Zone


                                                                                                                      Hydrologic Cataloging Unit Boundary


                                                                                                                      County Boundary


                                                                                                                      Salinity Zone Boundary - Low Variability


                                                                                                                      Salinity Zone Boundary - Moderate Variability


                                                                                                                      Salinity Zone Boundary - High Variability
                                                                                                                       Nittonrt Ocwn Servtcv/NOAA
                                                                                                                                                       1.17

-------
                                    01080201 -,
                                                          _J
                  01080206  ^   '    ^       01080204
                                                                     01100001
MASSACHUS
 --L--
C
                                                               01100002
                 01080207
                                                          TO L LAN D
                                        01080205
   01100005
                     NEW  HAVEN
                           01100004
01100006
                                          01100007
                                       g         e
                                                                      24 MILES
                                                                        •
                                                                        40 KILOMETERS
          St*tM Qt CO«in«ttc*il, M««»Cr>JB«KT»
 «IWVJ. Hydrologc Urvt Map. "?< tC«t 1 500.000 USOS Accounl.ng
 Jnrtl 01 m« NltKKtal W«1»r DVB N«fi*Wfc 1979. KoM 1 T.500 000
     N«ut>c«l Chad No 12375 Apm '964 tctfe i 20,000
                                                                                      Connecticut River
                                                                                      CT, MA
|-4" | Tide Gage

| • | Flow Gage

| A | Head of Tide

  I Estuarine Drainage Area (EDA)

  I Tidal Fresh Zone

  ;;|| Mixing Zone

  Jj Seawaler Zone

j—^ Hydrologic Cataloging Unit Boundary

|— -j County Boundary

  mi Salinity Zone Boundary - Low Variability

  H Salinity Zone Boundary - Moderate Variability

Mill Salinity Zone Boundary - High Variability
                                                                                           Office of Oceanogrmphy *nd Mtrlne A
                                                                                           Nmtional Oeein StrvlcfNOAA
                                                                                                                 1.17a

-------
          WEST CHESTER

              02030101
02030103'//02030102
                            N EWi  YO  R K
                                                                                                                  Great  South Bay
                                                                                                                  NY
|4-| Tide Gage

I • | Flow Gage


| A | Head of Tide


  J Esluarine Drainage Area (EDA)


   | Tidal Fresh Zone


  jg Mixing Zone


  JJ Seawaler Zone


     Hydrologic Cataloging Unit Boundary


     County Boundary


     Salinity Zone Boundary - Low Variability


     Salinity Zone Boundary - Moderate Variability


     Salinity Zone Boundary - High Variability
                                                                                                                       Offlcm at Ocvinogriphy and Martn* At*»*mm«ni
                                                                                                                       N»1lon*i Oc«tn Servicr/NOA*
                                                                                                                                                       1.18

-------
                                            02020004
                                                                   HENSSELAEH
                                                                               )
                                                                             02020003

                                                                               >	
                                                                         01100005\Q1080207
                                                                                          f
                             SULLIVAN

                                   	f./
   x    ^
        ROCKLAND
 XP AS SAIC
' 
-------
              •

U 6 G*ota#Gtf Surwy. SUM of Nmr Jctwy HyUotogtc Unt M*p, 1»74,
writ i 500,000 LISGS Acoourtlng UnMof tfwNMionM WMtr Otfa fw.
MX*. 1979. *c*» 1 7.500 000  NOAAJNO3 M*utc«l Qwt No 1»1«.
OMWntw 19S3. Kate 140.000. and 123EM, F«txu»y i*M K^»
1.40000
Barnegat Bay
NJ
   |  Tide Gage

   |  Flow Gage

     Head ol Tide

   I  Estuarine Drainage Area (EDA)

     Tidal Fresh Zone

     Mixing Zone

   l  Seawater Zone

     Hydrologic Cataloging Unit Boundary

     County Boundary

     Salinity Zone Boundary - Low Variability

   I  Salinity Zone Boundary - Moderate Variability

     Salinity Zone Boundary - High Variability
      Stnttgic A
      OeMn 
-------
    P  E  N  N S Y  L
                    CHESTER

                   0204020^--
M A R  Y  I.  A  N
                           DE   .A WAR
  S amove* 9un»*. SIM (X r«ii»)li«a. H)*«o«lc Un> Mw  M      >k
 1574, M. 1300.000, SUM « t». Jnq. HMraBpC UM IMP. 1174.  J
 ic« 1.WC.OOO. Sm ol P»»p.... Hittitolic UM MW, U7« rak^       f
 ' 500.000 JSOS Accounting 1Mb of tw rirtmn* WMW QMS NMMWk,
0       8      16     24  MILES


0     10   20    30    40  KILOMETERS
       SOS Accounting
 '971. KaM 1 7 5OO.OOD NOAA/NOS NUUCM ChW No 12304. OctOtWr
 1983. KM 1 80000
                                                                                                                             Delaware  Bay
                                                                                                                             DE,  NJ,  PA,  MD
                                            14" | Tide Gage

                                            [ • | Flow Gage

                                            [T] Head of Tide

                                                I Estuarine Drainage Area (EDA)

                                                 Tidal Fresh Zone

                                                 Mixing Zone

                                              j] Seawater Zone

                                                 Hydrotogic Cataloging Unit Boundary

                                                 County Boundary

                                                 Salinity Zone Boundary - Low Variability

                                                 Salinity Zone Boundary - Moderate Variability

                                                 Salinity Zone Boundary - High Variability
                                                                                                                                   Offfc* of
                                                                                                                                   Nmttonml Oc»»n
                                                                                     1.21

-------
                                                      \   (02060010
                                                       )   \  Drainage
                                                       I    V  Divide-
02060008
            02060007
      /-^	-x      02060009

              SOMERSET       \

                                 r^J
       MARYLAND  ^
                                \
                    02080109
                                  02080110
                                  '/
  1:500,000. SUM 
-------
       78
                                                                                                           75*
                             i  YL AW  D^y
                                                                                         ^    1SUSSEX

                                                                                      D E  LlAW AR  E
              V/  R  G    N  I  A
                                                                                                                37'
 T ClMtofferi 8wv*y. 8u» of Vlntr*. Hy*oto0B UnK W*. W74
rate 1 500.000, BWi at Mwytaral. HydtalD^c UnH H*f> 19^4 *r^i

1 500.000 USOS Accoofrtog 1MB erf M UttunU WMr OMi NMmM. -
1971, K«U 1 7,500,000 NCWWNO6 NwtM Ch»rt. No 132Z2, Jww
i9M. K«i« i <0.000
0      12      24 MILES

       *=P*
0   10  20  30  40 KILOMETERS
                                      Chesapeake  Bay
                                      VA,  MD,  DE,  PA, DC
                                                                                                                         Septntety M*pp*<* Subsystems.
                                                                                                                         I 23a P&omac River
                                                                                                                         i ?3D nappafwnnocfc
                                                                                                                         ' 23C York Rivtr
                                                                                                                         1 23d James Rver
                                     14*1 Tide Gage

                                     [ • [ Flow Gage

                                     [AJ Head of Tide

                                       J Estuarine Drainage Area (EDA)

                                       | Tidal Fresh Zone

                                       I Mixing Zone

                                        II Seawater Zone

                                     p^ Hydrologic Cataloging Unit Boundary

                                     f- -| County Boundary

                                       | Salinity Zone Boundary - Low Variability

                                       fl Salinity Zone Boundary - Moderate Variability

                                          Salinity Zone Boundary - High Variability
           • OMtton

National Octan Strvica/NOAA
                                                                                                                                                                1.23

-------
MONTGOMERY
                                      N E \A R       it.
                                                  02060003
U S n lllUiil Survey SUM (X VMn*. HY*T**C Urtl *», 1
K*t 1 WOOOO SUM rt Mary**, HmMpC LM U«p 1>74. I
• 500 000 USGS Accounting Unto V *M N«K>n« ««w 0*M Nam
1979. •«*• 1 7 500.000 MOAANO5 H«M
-------
                                                                                                                   Rappahannock  River
                                                                                                                   VA
                                                                                                                   I+1 Tide Gage


                                                                                                                   I > | Flow Gage


                                                                                                                   |"I"| Head of Tide


                                                                                                                     J Estuarine Drainage Area (EDA)


                                                                                                                       Tidal Fresh Zone


                                                                                                                       Mixing Zone


                                                                                                                     JJ Seawater Zone


                                                                                                                       Hydrologic Cataloging Unit Boundary


                                                                                                                       County Boundary


                                                                                                                       Salinity Zone Boundary - Low Variability


                                                                                                                       Salinity Zone Boundary - Moderate Variability


                                                                                                                       Salinity Zone Boundary - High Variability
US Gotogte* Sunvy, 9Uta o( V*g*», HydrotogK Un* M*p. 1«7*
M> i 500,000 USa» taoxMng Un« o< m« »M<»Ml W*Uf DM N»
Mrti, (971. KAN 1 7.500000 MOAAMOS NMtlcM O»rt No 12236.
     IMS. *c«* 1 40 OOO
                                                                                                                                                       1.23b

-------
                                                                                        5'^
                                                                                  02080108    N
                                                                          P O R T H A M P T O N
37« —
^^
  X0208020*
           «•» SHU a n«ni. i .
     1 500 000 U9O3 AcoMjndnfi Urutt o(»» N
  MM. H'9 KM 1 7.900.000 NOAAMOS NMIUfl Owrt No «
  JtM 1M4. Ktft 1 40.000
24 MILES

  f)
  40  KILOMETERS
                                                                                                             York  River
                                                                                                             VA
                    |+| Tide Gage

                    | • | Flow Gage


                    |"A] Head of Tide


                      J Estuarlne Drainage Area (EDA)


                       I Tidal Fresh Zone


                      I Mixing Zone


                       II Seawater Zone


                         Hydrologic Cataloging Unit Boundary


                         County Boundary


                         Salinity Zone Boundary - Low Variability


                         Salinity Zone Boundary - Moderate Variability


                         Salinity Zone Boundary - High Variability
                                                                                                                  OCMn A
                                                                                                                  OHIC* a Ocmtmfht tna **
-------
                        02080106
                                                 VIRGINIA

                                     02080107
        H ARLES
         CITY
               02080206,H,
       I NCE
     GEORGE
                                                                    02080108
                        03010202
    03010201

SOUTHAM PTO
02080208
                                                            CHESAPEAKEN
                                                             03010205
03010204
J S QiotaplBH temr, 8W* ot Vkglnta. H»aretatfe LMt HV 1*7*
  1400,000
  WTt. rate 1:7.500.000 MOAMNOR Maartf O«1, Mo
       1*000
                                               James River
                                               VA
                                                                                                           Eslutrlne
                                                                                                           Drmlnmge
                                                                                                            Art*
14-1 Tide Gage

| • | Flow Gage

|"A] Head of Tide

  J Estuarine Drainage Area (EDA)

  I Tidal Fresh Zone

  B Mixing Zone

  M Seawater Zone

   Hydrologic Cataloging Unit Boundary

   County Boundary

   Salinity Zone Boundary - Low Variability

  I Salinity Zone Boundary - Moderate Variability

   Salinity Zone Boundary - High Variability
                                                                                             OcMrtogr**?
                                                                                             Ocftu S9TV1C9I
                                                                                                    *Kf M**w Amnmint
                                                                         1.23d

-------
  J30102014
                                                                                       ATLANTIC
SOUTHAMP  o   /03010202     VIRGINIA
                                                                                          Drainage Divide
1174, MM I MOJM. U9BS Amm***} UP* of t» Ntftonl WHW OM
      I. Kate 1 7.WO.OOO NOAAMO8
                                                                                                             Albemarle Sound
                                                                                                             NC,  VA
                                                                                                                            Fh/vM
                                                                                                                           Drainage
                                                                                                                            Area
                                                                                                             H
                                                                                                             D
                                                                                                                 Tide Gage

                                                                                                                 Flow Gage

                                                                                                                 Head of Tide

                                                                                                                 Estuarine Drainage Area (EDA)

                                                                                                                 Tidal Fresh Zone

                                                                                                                 Mixing Zone

                                                                                                                 Seawater Zone

                                                                                                                 Hydrologic Cataloging Unit Boundary

                                                                                                                 County Boundary

                                                                                                                 Salinity Zone Boundary - Low Variability

                                                                                                                 Salinity Zone Boundary • Moderate Variability

                                                                                                                 Salinity Zone Boundary - High Variability
                                                                                                                   Oc««fl <•*•••>! MiUi DtvMon
                                                                                                                   Offle* o/ Oc+ertogrmptiy */Mf AUrint A*
                                                                                                                   Hmttonml Octmn S»rvtc»fNOAA
                                                                                                                                                2.01

-------
S SMo»ul Sutv«Y, Sun
74.uk ^500 000 UaOBUcou
-------
                                                     '                      )
                                03010107  ^H\ WASHINGTON,'
                                                            03010205
                                                                       TYRRELL
          CRAVEN


    03020202
JONES     03020106
                Ntf   N
  KM 1 WdoQC USG8 A«JUM*IH unta of tw MMOMI MWr
     . tTt. KM 1 7JO».n» KOMMO* ItaHM Ctal M>
i tM*. siiwrMi im. ico i
                                                                 3D       40 KILOMETERS
                                                                                        Pamlico and Pungo Ri
                                                                                        NC
   | Tide Gage


   [ Flow Gage


    Head of Tide


  J Estuarine Drainage Area (EDA)


H Tidal Fresh Zone


  I Mixing Zone


  JJ Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


[— -j County Boundary


  I Salinity Zone Boundary - Low Variability


    Salinity Zone Boundary - Moderate Variability


    Salinity Zone Boundary - High Variability
                                                                                                                     2.02a

-------
ItapSourcn:
U S G«otogicai Survey Slits of N(Xh Carolina Hv*oto»c Un« Map
lt?4 scale i 500000 USGS Accoonfmg Unili Ol th» Malwnai
Data Ntfwtyh 1979. »caW i 7 SOO.OOO  NOAAffJOS Nautical Ch»n No
11541 Marcfi 198-f «ca>» 1 40.000
                                                                                                                 40  KILOMETERS
                                                                                                                                         Neuse  River
                                                                                                                                         NC
                                                                                                                                         [•+•[ Tide Gage

                                                                                                                                         I <) | Flow Gage

                                                                                                                                         | A | Head of Tide

                                                                                                                                           J Estuarine Drainage Area (EDA)

                                                                                                                                            I Tidal Fresh Zone

                                                                                                                                           U Mixing Zone

                                                                                                                                           JJ Seawater Zone

                                                                                                                                         |~^ Hydrologic Cataloging Unit  Boundary

                                                                                                                                         [~ "j County Boundary

                                                                                                                                           ^ Salinity Zone Boundary - Low Variability

                                                                                                                                           ^ Salinity Zone Boundary - Moderate Variability

                                                                                                                                        [l|lj Salinity Zone Boundary . High Variability
ki,  Strategic Assessment Branch
^  Ocean 4*s*5S/nenri Divrsiorr
    OfHc* of Oceanography mnd Marine Assessment  _  f\*\l*
                                                                                                                                                 ice o  ceanograpy an   a
                                                                                                                                               National Ocean Service 'NOAA

-------
  {        03020202
U 8 Q*o*offc«i Surwy 9M* of North drofeM, Hydrologtc Unt Mw
1174 tc*ta 1 500.000  USG3 AcoMjnt«i« unite of irw Nauoral
Diu Nrtwort 1879. ic«t« I 7,500.000 NOAA/T4O5 Naulicx Owl Me
1154* March o0fap/>x •"<* ttonnf AfteMment
Ngttonmt Octmn Svr,,c?.'HOAA
                                                                                                                                                                 2.03

-------
                           C ARO L  I/N  A
                                                                                                                                       New  River
                                                                                                                                       NC
                                                                                                                                       |-^-| Tide Gage

                                                                                                                                       I > | Flow Gage

                                                                                                                                       | A | Head of Tide

                                                                                                                                           I Estuarine Drainage Area (EDA)

                                                                                                                                          I Tidal Fresh Zone

                                                                                                                                         J Mixing Zone

                                                                                                                                          II Seawaler Zone

                                                                                                                                       [~~| Hydrologic Cataloging Unit Boundary

                                                                                                                                       p- ~] County Boundary

                                                                                                                                         B Salinity Zone Boundary - Low Variability

                                                                                                                                         g Salinity Zone Boundary - Moderate Variability

                                                                                                                                       |||)j Salinity Zone Boundary - High Variability
U S Gaotogic*. Survey sttt* ol North Carofirv* MvWokve urw M«p
1974 tdl« 1 SOO.OOO USGS Accounting unw of rn« N*t>on«l WM«1
OW» N«t^rl..  19T9 leal* t 7 5OO 000 NOAAyNOS Niutt* Chart No
1^542. May 1903. Ktf« 1 40.000
Stftttylc Assessment Branch
Ocetn Assessments Division
Office of Oce»noyr»phf mnd Mann.
Nftlonml Ocean Service/NCAA
                                                                                                                                                                                  2.04

-------
                                                                      03030001
                         / D U P L I N
                                                                   O Nf S L O W
    03030006
                                                FENDER
                                                 : AfR   »  LI  N A   \


                                      03030007
                                              NEW

                                            HANOVER
COLUMBUS
                         03030005
~    03040206

JRUNSWICK
                                                         ATLANTIC
           03040207
                                              Drainage Divide
  19oo.m> uses A<»o>«* ma Mm
                                                                                            MMtonM Oc««n KS/MOM
                                                                                                                   2.05

-------
                               \     r 03040204
          03040202
                                                       03040206
  SOUTH   CAROLINA
                                    0304020
                          03040205
                                                  ATLANTIC
                          03040207
              03050112
OCEAN
US Ontogtotf Surwy. 9M» o*
ffl74. »c**» 1 900,000 USOS
    1*7*, MMto 1.7
1S32. Ftbruvy 1M2. KaM 1 «O.QOO
                                                                              Winyah Bay
                                                                              SC,  NC
l+l Tide Gage

| • | Flow Gage

| A | Head of Tide

  J Estuarine Drainage Area (EDA)

  | Tidal Fresh Zone

  H Mixing Zone

  II Seawater Zone

   Hydrologic Cataloging Unil Boundary

   County Boundary

   Salinity Zone Boundary - Low Variability

   Salinity Zone Boundary - Moderate Variability

   Salinity Zone Boundary - High Variability
                                                                                                      2.06

-------
               03040205 ,-
XWILLIAMSBURG/
  "V       ^
               0305011
                                                                  3040207
ORANGEBURG
    Vj>3050206/
                                                       03050112
                            S O)U 1  H
    C A R O IAI N A
 03050201
                     s  BERKIELEY
                      \
       DORCHESTER
          L
03050205
                   0305020
 !?
 If74. m. 1 500.000 USS3 Meaning Un*. <* M
 Mi NMnit. IITt. toM i 7.500,000 NOWNO8 NMMI CMrt No
 11523. July. ISM. KM I 20.000
                                                           30
                     24 MILES
                      L
                       40 KILOMETERS
                                                                                Charleston Harbor
                                                                                SC
                                                                                                   Estuanne
                                                                                                   Drainage
                                                                                                    Area
                                    I-4" | Tide Gage

                                    [ • [ Flow Gage

                                    [ A | Head ot Tide

                                      J Estuarine Drainage Area (EDA)

                                       Tidal Fresh Zone

                                       Mixing Zone

                                       Seawater Zone

                                       Hydrologic Cataloging Unit Boundary

                                       County Boundary

                                       Salinity Zone Boundary - Low Variability

                                       Salinity Zone Boundary - Moderate Variability

                                       Salinity Zone Boundary - High Variability
                                                                                                          2.07

-------
 CLAREND
                                                                            /  03040201
                                       'C H A'R L E S T O N
24 MILES
  n
  40  KILOMETERS
1074, M«* 1 SOO.OOt U80S AcoownMng Un«» el
DM MOM. 1t7l. KM 1 7 500 000 NOMUN06
11931, My. IBM. to* 180.000
                                                                                                        North  and  South  Sante
                                                                                                        Rivers
                                                                                                        SC
                    |+| Tide Gage


                    | • | Flow Gage


                    [A] Head of Tide


                       I Estuarine Drainage Area (EDA)


                      I Tidal Fresh Zone


                      9 Mixing Zone


                      JJ Seawater Zone


                        Hydrologic Cataloging Unit Boundary


                       | County Boundary


                        Salinity Zone Boundary - Low Variability


                        Salinity Zone Boundary - Moderate Variability


                        Salinity Zone Boundary - High Variability
                                                                                                                                           2.08

-------
                                                                         N              : L E Y
                                           03050205
                                                    DORCHESTER  s
                 03050207
03050202    \
               SOUTH
CAROL  INA
                                      COL     TON
                                                                         HARLESTON
HAMPTON
                                       03050208
        Drainage Divide -*-
              JASPER
                                                                                   Drainage Divide
       Sur«r. StM ol Soum Owe** Hydntogfc Unl •«•>,
1074, K*a 1 500,000 U8QS
D«i NM«Kork. 1tn. K«to 1:7.500,000 4OAAMO6 Nmtic^ Chart Mo
11S17, M*y. 1982, tea** 1 40.000
                                                                                   40 KILOMETERS
                                                              St.  Helena  Sound
                                                              SC
                                                              l+l Tide Gage

                                                              | • | Flow Gage

                                                              [A] Head of Tide

                                                                 I Estuarine Drainage Area (EDA)

                                                              | Tidal Fresh Zone

                                                                |J Mixing Zone

                                                                II Seawater Zone

                                                                  Hydrologic Cataloging Unit Boundary

                                                                  County Boundary

                                                                  Salinity Zone Boundary - Low Variability

                                                                  Salinity Zone Boundary - Moderate Variability

                                                                  Salinity Zone Boundary - High Variability
                                                                   Otttc* of Oc»»nogrmftty and Mprfcn AaVeWM
                                                                   N*tto*»l OCMTI Strv(c«/MO>U
                                                           2.09

-------
-^v
AL/LEND>ALE'
                                      03050207
                      H A M P TvO
                                                              COLLI  TON
                                                 \CAROLINA        03050205
                                                                                       '
S O U • • H /  *
  03060109
  MMutOMMo*    M*
  IMP, 1174 «a» 1 500.000 'j8Q« Menrtng UMM of M IMll «
    OX N«*o*, im. •»• 17.SOO.000 NOMMOe N««le«l CM>
  w> 11S«. JJ»
                                                                                    Broad River
                                                                                    SC
                                                                                                                  Estuartne
                                                                                                                  Dr*,n»g,
                                                                                                                   Area
                                                                                                    l+l Tide Gage


                                                                                                    | • | Flow Gage


                                                                                                    [T] Head of Tide


                                                                                                       J Estuarine Drainage Area (EDA)


                                                                                                       J Tidal Fresh Zone


                                                                                                       • Mixing Zone


                                                                                                       II Seawater Zone


                                                                                                    p^ Hydrologic Cataloging Unit Boundary


                                                                                                    f— *j County Boundary


                                                                                                       | Salinity Zone Boundary - Low Variability


                                                                                                        j Salinity Zone Boundary - Moderate Variability


                                                                                                        Salinity Zone Boundary • High Variability

                                                                                                              Octin SwKt'NOAA
                                                                                                                                     2.10

-------
                ALLEN DALE

         03060106 \
                                                         03050207
0306010
                                                                     COL     TON
                                       HAMPTON
                                                                   \  03050208
                                                        LIMA   \
                        S O U\T H      C A RT O
      G EE  O RJG  I A
                        03060109
      03060202
                         F F I  N G H A M
  BU LLOCH  \
                         CHATHAM


                                 03060204
^03060203
 U S OwtogK* Sunwy. SU#M of Souffi C«roAn« mdOwrgH Hydratotfc
 Un«W«p«, 1974, »c*M 1.500.000 NOAA^OS Nturtcal Ch«rt No US12.
 Aorl 1964 «cato i 40.000
Savannah River
SC,  GA
    Fluvial
   Drainage
    Area
                                                                                                                Esluarirte
                                                                                                                Drainage
                                                                                                                 Area
| + | Tide Gage


| • | Flow Gage


PA"| Head of Tide


  J Estuarine Drainage Area (EDA)


  I Tidal  Fresh Zone


  B Mixing Zone


  JJ Seawater Zone


p**•j Hydrologic Cataloging Unit Boundary


[~ -| County Boundary


  B Salinity Zone Boundary - Low Variability


  H Salinity Zone Boundary - Moderate Variability


  fl Salinity Zone Boundary - High Variability
                                                                                               Strtt*&c Ag9»tttm»nl Bfmnch
                                                                                               Oc*«n AM«**m*nr* OfrifiGr.
                                                                                               Office ot Oc»*nogrmpfty and Hmrlnm Am*»m*m«nt
                                                                                               '	f Oc»fn S»rv*c«/rVOA>l
                                                                                                                          O 1 1

-------
                                        03060204
                                  MCINTOSH
«M. <«7t. •£«•. I 7.SOO.OOO HOUMOS M*K* CMt No 11111.
AuguM. IMI.Kato 140.000
                                                                                                         Ossabaw  Sound
                                                                                                         GA
                                                                                                          | + | Tide Gage


                                                                                                          [ • | Flow Gage


                                                                                                          [A] Head of Tide


                                                                                                           J Estuarine Drainage Area (EDA)


                                                                                                           | Tidal Fresh Zone


                                                                                                           I Mixing Zone


                                                                                                              Seawater Zone


                                                                                                              Hydrologic Cataloging Unit Boundary


                                                                                                              County Boundary


                                                                                                              Salinity Zone Boundary - Low Variability


                                                                                                              Salinity Zone Boundary - Moderate Variability


                                                                                                              Salinity Zone Boundary - High Variability
                                                                                                                                            2.12

-------
                                 103060109'"
'xVMCINTOSH

    i
                                                                           St. Catherines/Sapelo Sc
                                                                           GA
   | Tide Gage


   | Flow Gage


    Head of Tide


   I Estuarine Drainage Area (EDA)


  | Tidal Fresh Zone


    Mixing Zone


  I  Seawater Zone


p*"| Hydrologic Cataloging Unit Boundary


^ ^ County Boundary


  H Salinity Zone Boundary - Low Variability


  B Salinity Zone Boundary - Moderate Variability


  D Salinity Zone Boundary - High Variability
                                                                                  Strtfegtc *»**M">#nf Brmncft
                                                                                  Octfn At»t*im*nta CHvltfon
                                                                                  Office of Oc*fnogf*f>fty
                                                                                  Nmtton*! Octmn S*rvlc*/NOAA
                                   2.13

-------
nktsoo.000 u90S
Mrtu 1971. K*t 1 7500.000 NOAA/N06 Nuflnl C)«rt »*o 11901
• •put. 1MO, •cata i «.00fl
                                                                                                                     Altamaha  River
                                                                                                                     GA
                                                                                                                     |+| Tide Gage


                                                                                                                     | • [ Row Gage


                                                                                                                     [T] Head of Tide


                                                                                                                          Estuarine Drainage Area (EDA)


                                                                                                                          Tidal Fresh Zone


                                                                                                                          Mixing Zone


                                                                                                                          Seawater Zone


                                                                                                                          Hydrologic Cataloging UnH Boundary


                                                                                                                          County Boundary


                                                                                                                          Salinity Zone Boundary - Low Variability


                                                                                                                          Salinity Zone Boundary - Moderate Variability


                                                                                                                          Salinity Zone Boundary - High Variability
                                                                                                                           Ome» ot Ocftwtognpftr tnd
                                                                                                                                                           2.14

-------
                                                     03U60204
  ri
03070202
                   03070106
 f   GEO
03070203
 03070201
                               CAMD E N
                                    ^	

                                    Drainage Divide
              03070204
                    tofh Un« IMp, 1W4.
   I 503 OCC U30S tanMng 1MB « At MKm Knot On N»
   tm. tax 1 7.600.000 HCWAMOS
                                           24 MILES

                                            h
                                            40 KILOMETERS
                                                           St.  Andrew/St. Simoi
                                                           Sound
                                                           GA	
                                                               Tide Gage


                                                               Flow Gage


                                                               Head of Tide


                                                              I Estuarine Drainage Area (EDA)


                                                             I Tidal Fresh Zone


                                                             • Mixing Zone


                                                             JJ Seawater Zone


                                                           p""*] Hydrologic Cataloging Unit Boundary


                                                           p- -] County Boundary


                                                               Salinity Zone Boundary - Low Variability


                                                              ( Salinity Zone Boundary - Moderate Variability


                                                               Salinity Zone Boundary - High Variability
strwlf&c Amtftmuu flnncft
OeMn AMM*(n«n
-------
                                              _  O R  I D A   m\
                                                                                                      V~0 L U S I A
U S O«otogtcai Survey. SIM oi Ftond«, Hydn*ogK LMt Map >074. K*»
< 5OO 000 USOS Aixourttno Ural* oi IfW Nmion^ WtWr O«U NMworli,
iBT9 tcato i 7,500,000 MOAA^OS NMHC* Ctwt Ho niw, Jmwy
1982. tea* 1 40.000
                                                                                                          03080101
0	8	16	24  MILES

6       10      20      30      40 KILOMETERS
                                                                                                                             St.  Johns River
                                                                                                                             FL
                                                     +| Tide Gage

                                                     • | Flow Gage

                                                         Head of Tide

                                                         Esluarine Drainage Area (EDA)

                                                         Tidal Fresh Zone

                                                         Mixing Zone

                                                         Seawater Zone

                                                         Hydrologic Cataloging Unit Boundary

                                                         County Boundary

                                                         Salinity Zone Boundary - Low Variability

                                                         Salinity Zone Boundary • Moderate Variability

                                                         Salinity Zone Boundary - High Variability
                                                                                                                                                Branch
                                                                                                                                               DMtion
                                                                                                                                  OfHc* of Oc^nogrtfhy mnd
                                                                                                                                  Httlonml Ocrmn Strvlct/NOAA
                                                                                            2.16

-------
9
             . SUM 01 nortcM. Hydrdto^c UnM Mflfl 
-------
                                                BROWARD
                                                 Drainage Divide
                         FLORIDA

          Drainage Divide -*-
   1:600.000 U9Q8 Acoourt*^ Unta rt »•
•or*, 1979. tcate 1 7.500.000 MOAAWOS
•nd 11463. MM 1M3, *c*ta 1 40.000
                                                                                                                       Biscayne Bay
                                                                                                                       FL
l+l Tide Gage


| • | Flow Gage


|"A~| Head of Tide


  J Estuarine Drainage Area (EDA)


   | Tidal Fresh Zone


  • Mixing Zone


  JJ SeawaterZone


     Hydrologic Cataloging Unit Boundary


     County Boundary


     Salinity Zone Boundary - Low Variability


     Salinity Zone Boundary - Moderate Variability


     Salinity Zone Boundary - High Variability
                                                                                                                                                              2.18

-------
CO L  L I
                           B R OWAR  D
                         03090202
                                     D  AD E
                                  Whitewater Bay   I
                                        Drainage
                                         Divide
                                     24  MILES
U S OntogMI Swv»r. SIM of Florid* HaniliglL UM Map. HM.
icata 1 500,000 USOSAcceunltng Unte of fwNaaona* Wai** Data***
•ort. 1»T». Ktf» 1 7.500.000 HOAAMOt Marfert Ctiwi MM 114)0.
M4». and 114M. Jun*. ifl»4. Kata i 30.000
                                       40  KILOMETERS
                                                          Ten  Thousand Islands
                                                          FL
                                                                                                                     |+1 Tide Gage

                                                                                                                     |  • | Flow Gage

                                                                                                                     |  A | Head of Tide

                                                                                                                       _| Estuarine Drainage Area (EDA)

                                                                                                                        | Tidal Fresh Zone

                                                                                                                       li Mixing Zone

                                                                                                                       JJ Seawater Zone

                                                                                                                     |~~| Hydrologic Cataloging Unit Boundary

                                                                                                                     [~ "j County Boundary

                                                                                                                       I Salinity Zone Boundary - Low Variability

                                                                                                                       Q Salinity Zone Boundary - Moderate Variability

                                                                                                                          Salinity Zone Boundary - High Variability
Strmtvgtc *

Otftc* of Octmogrmphy »nd M»
Hmtfonmt Oc»»n S#rvle+/HOAA
                                                                                                  3.01

-------
                                                                                 DE  SOTO


                                                                  FLORIDA
                                                                   Drainage Dlvld*

                                                                               03090204
            i a FWDl. HKWBgIC UM M*. l»7«
 500 000 USQ9 Acoounng UnM ri m. Nmn« WM> DM (W-
 tT» KM 1 7 300000 NOMMOS
11427 Auguw 1H4. «cn« 1 40.000
                                                                                                           Charlotte Harbor
                                                                                                           FL
l+l Tide Gage


[•] Flow Gage


[~A"| Head of Tide


  J Esluarine Drainage Area (EDA)


  | Tidal Fresh Zone


  | Mixing Zone


  II Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


p* *j County Boundary


  | Salinity Zone Boundary - Low Variability


     Salinity Zone Boundary - Moderate Variability


     Salinity Zone Boundary - High Variability
                                                                                                                                                3.02

-------
          03100102

    SARASOTA
27
03100201
       DE SO

03100101
                                                                                              Caloosahatchee River
                                                                                              FL
   GULF OF MEXl
  3 Ouoglcil Smy. •"• <* "•>*. HyOWogle UM Me. IfW,
  m> 1«»,««. U90S ooouiang UMi M l» nun* WMt DM M»
  •OA. I*T>. ion < 7 WO.KIO MOMMH HUH* OM M HOT,
     1904. KMi 1,40.000
                                                          | Tide Gage


                                                          | Flow Gage


                                                           Head of Tide


                                                         J Estuarine Drainage Area (EDA)


                                                         I Tidal Fresh Zone


                                                         • Mixing Zone


                                                         JJ Seawater Zone


                                                       \~^ Hydrologic Cataloging Unit Boundary


                                                       \- -\ County Boundary


                                                         | Salinity Zone Boundary - Low Variability


                                                           Salinity Zone Boundary • Moderate Variability


                                                           Salinity Zone Boundary - High Variability
                                                   10
                                                            20        30        40 KILOMETERS
                                                                                   3.023.

-------
                                    03100208
03100207
                       03100205
 031002061 F:LO F  I D
                                   03100204
                              LSBOROUGH
                                 J03100203
                                H A~R D E E
                          03100202
                  M AN AT
                                      03100101

                                  J03100102
                                        03100201
                                         S A R A S OCT A     ,
                                     0          8         18
                                        24 MILES

                                          i|
                                  30       40 KILOMETER;
US OrctovcH Sun*, MM « FtoHM. Hyftotoge UK M*>. lt».
  1400,000 yaos
  197t, Mato 1:7.500.000 MOAAINOS tlaah J CtMrt He 11414.
««t, 1M4, K>M 1 40.MO
                                                       Tampa Bay
                                                                    Estutnnt
                                                                    Drainage
                                                                     Area
                                                                                   [+[ Tide Gage


                                                                                   [ • [ Flow Gage


                                                                                   PA] Head of Tide


                                                                                      I Estuarine Drainage Area (EDA)


                                                                                     I Tidal Fresh Zone


                                                                                     I Mixing Zone


                                                                                     Jj Seawater Zone


                                                                                   f—\ Hydrologic Cataloging Unit Boundary


                                                                                   |— -j County Boundary


                                                                                      | Salinity Zone Boundary - Low Variability


                                                                                      Salinity Zone Boundary - Moderate Variability


                                                                                      Salinity Zone Boundary - High Variability
Strvfegfc Aft	
OcMn fl«M««nmifi OMtion
Offtct otc.
                                                                                                              3.03

-------
                                                    ^SUWAN           UcOLUMB.A
                                                                                  I                   V,
                                                                                      03110206
TAYLOR
                      LAFAYE
                                    02
                                        F  L OAR  I  D
                    Drainage Divide
                               X
                                                                                         03110101
U S Owito^nt Surwy. 9M« of HorWi, tv»olo«tc LMI U« 1174.
•CM vMO.OOO U9OSAcoount«gUnMo(tMNMIonMWM*rtMMNil-
•orii.1ff7f.KMM1 7,500000 MOAAflOfiHaulfcilCTwi Mo 1t4M,Jw-
te. I9tt, KaM 1 80,000
                                                                                                               Suwannee River
                                                                                                               FL
                                                                                                              | Tide Gage


                                                                                                              | Flow Gage


                                                                                                               Head of Tide


                                                                                                             J Estuarine Drainage Area (EDA)


                                                                                                             | Tidal Fresh Zone


                                                                                                             • Mixing Zone


                                                                                                             JJ Seawater Zone


                                                                                                           ^—\ Hydrologic Cataloging Unit Boundary


                                                                                                           f~ •] County Boundary


                                                                                                             | Salinity Zone Boundary - Low Variability


                                                                                                               Salinity Zone Boundary - Moderate Variability


                                                                                                               Salinity Zone Boundary - High Variability
                                                                                                                Strmtogtc Am»9*n*nt Bnncti
                                                                                                                fTraan \mmmintm Pfrfrftrn
                                                                                                                OfHet ot Octmnogruptry tnd Hurtni
                                                                                                                     OCMTI S*rvto«/MOA4
                                                                                                                                                   3.04

-------
  3130008^        T—T3120002!
       DECATU R  !  V        GRADY  '
03110203
 B ROOKS
               GEORGIA
      GAD S D E N
                                                              JEFFERSON
                                                                  03110103
                           FLORIDA  If
                                                                           AD I SO N
                           03120001
                                ~~\	
             WAK U L LA
                                                                       03110102
                                                                         TAYLOR
03130013
   OMfagleal Surwy SUM of Qwola, Hydroiog* U«* ktap 1W4.
 MM* 1 500.000, 9UM 01 Ftortdfc HyOrotooX Un* Map. 1974. KaM
 I 900 000 UaeS AaauimQ Urik rt I» Ntforal W«^ DM Mmot.
 ItTt. Kali 1 7,500 000 NOAAMOS Ncwflol Ow!. NO- 11406.
 1««. M4*i 1 WOOD
                                                                   30       40 KILOMETERS
Apalachee Bay
FL, GA
                  14" | Tide Gage

                  | • | Flow Gage

                  | A | Head of Tide

                    J Estuarine Drainage Area (EOA)

                    | Tidal Fresh Zone

                    • Mixing Zone

                    JJ Seawater Zone

                  p^ Hydrologic Cataloging Unit Boundary

                  [— -\ County Boundary

                     Salinity Zone Boundary - Low Variability

                     Salinity Zone Boundary - Moderate Variability

                     Salinity Zone Boundary • High Variability
                      Oemmn 1aM.Mn.infi DMtten

                      Httton* OcftnS+rvtci>/NOAA
                                                                                                                         3.05

-------
                                                                         GCADSD  EN
    CALHOUN
                                             LIBERTY
                                                                             7        WAKULLA

                                                                                \
                                                   FRANKLIN
                                                  Drainage Divide
                     24  MILES

                     fc
20          30         40  KILOMETERS
• 5CB.90C USOS Acowr«ri« UnM If  IMuiirt w«Mr CMtt
•<7t. MM 17.900 000. NOAAMO«H««m Owl Ml it«».
   •«*• ' BOOOO. MD H«1. M« '«*. •(*• 1 «QOOO
                                            Apalachicola Bay
                                            FL
                                               | Tide Gage

                                               [ Flow Gage

                                               | Head of Tide

                                                Estuarine Drainage Area (EDA)

                                              | Tidal Fresh Zone

                                              P Mixing Zone

                                              M Seawater Zone

                                            p^ Hydrologic Cataloging Unit Boundary

                                            f~ •) County Boundary

                                              J Salinity Zone Boundary - Low Variability

                                              D Salinity Zone Boundary - Moderate Variability

                                                Salinity Zone Boundary • High Variability
StrvftpMr A**nwn*nf Brmnch
OOMR 4MM«m*nM MvMon
ofnc» of Oe*mnty"£*'y *** M*rtn* **
                                                                                                                                                                3.06

-------
                                                                             JACKSON
                                    WAS HIN GTO N
03140102
                   TON   J
                                                                              CALH O U  N
                    Drainage Divide
                         J
                                                                              03130012
                                                           03140101
                                                            Drainage Divide X    GULF
                  OF MEXICO
                                                                                0313001
 U & OMlog>c*l Swrvvy, SUM o» Ftortda. Mydrotogtc Unit Map. 1974,
 •caM i SOD 000 USGS Accounting Unftt of the National W«tf D«U NM
    1tn.«c>*>1 7.900.000 MOAA/NO6 Nwttnl Chtrt No H391 Oe-
          40.000
                                                                                  40 KILOMETERS
St.  Andrew Bay
FL
   Esruarine
   damage
    Area
l+l Tide Gage

| • | Flow Gage

[A] Head of Tide

   I Estuarine Drainage Area (EDA)

  | Tidal Fresh Zone

  J Mixing Zone

  JJ Seawater Zone

p^ Hydrologic Cataloging Unit Boundary

p* ~j County Boundary

  ^ Salinity Zone Boundary - Low Variability

  ^ Salinity Zone Boundary - Moderate Variability

  (I Salinity Zone Boundary - High Variability
     Strategic liMiimanf Branch
                                                                                                                                   3.07

-------
                                                        03140201
   03140301
                 CO VI NGTON
                                                         GENEVA
03140104
            ALABAMA
            FLORIDA!
03140202!
              03140103
                                                        HOLMES

          OKALOOSA
                               03140102
                WASHINGTON
03140105
                      Choctawhatchee Bay

                          OP
                    03140101

                        BAY
 U • OM09&I Surrw. Sun a RoAk.
 to* t 900.000. U808 MOW** tHk tl I
 «««, «7» ic* i 7 MO.OOO NOWWNOe
     1W8. M* 1:40.000
                                     Choctawhatchee Bay
                                     FL, AL
    Estuarrne
    Drainage
|^| Tide Gage


[•"I Flow Gage


  | Head of Tide


   Estuarine Drainage Area (EDA)


   Tidal Fresh Zone


   Mixing Zone


   Seawater Zone


   Hydrologic Cataloging Unit Boundary


   County Boundary


   Salinity Zone Boundary • Low Variability


   Salinity Zone Boundary - Moderate Variability


   Salinity Zone Boundary - High Variability
                                                                                                      3.08

-------
Pensacola  Bay
FL, AL
     Tide Gage
| • | Flow Gage


[T] Head of Tide


  J Estuarine Drainage Area (EDA)


  | Tidal Fresh Zone


  I Mixing Zone


  J] Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


p ^ County Boundary


     Salinity Zone Boundary - Low Variability


     Salinity Zone Boundary - Moderate Variability


     Salinity Zone Boundary - High Variability
OcMfl


Nttton* OCMfilfcXit*/
                                     3.09

-------
                                                                 03140304
                                              03140305
        JL 03160204
                                                 ESCAMBI A
                   ALABAMA
      FLORIDA
                                                                    SANTA


                                                                     ROSA
ESCAM Bl A
                                      03140106X  03140305
                                                                   03140104
                           BALDWIN
              03160205
                                                                      V
                                                                   03140105
                                  03140107
                                                       PerdMoBay



                                                 OF         MEXICO
J6 Ocologk* Survey. 3UtM O* AMtwrw, Q*offl». MM]

Hydrotogfc I** M«», 1974. M* 1 JOO.OOO U9O9 Acoounnng iMM ol

            1979. MM 1 7,900,000 MOAA/N08

   l Ch»n No "378 FMxutry, 19M, KMi 1-40.000
                                                                                   Perdido Bay
                                                                                   FL, AL
                                                                                   |+| Tide Gage



                                                                                   | • | Flow Gage



                                                                                   ["A] Head of Tide



                                                                                      I Estuarine Drainage Area (EDA)



                                                                                       Tidal Fresh Zone
                                          • Mixing Zone



                                          JJ Seawater Zone



                                        \~^ Hydrologic Cataloging Unit Boundary



                                        f~ "| County Boundary



                                          M Salinity Zone Boundary - Low Variability



                                          Q Salinity Zone Boundary - Moderate Variability



                                            Salinity Zone Boundary - High Variability
                                             Strategic At****m+nt Brunch

                                             Octen AMftffmtftt Division



                                             Nitionit Ot»»n£fr%C9/HOAA
                                                                                                              3.10

-------
                                                 I A L A(B A M  A  ,
 1031700081   MOBILE
                                                                      03140107.   S\
                                                                           MEXICO
                                                                                                   Mobile Bay
                                                                                                   AL
U S. Q**oQOt Svnwy. tata at H*t*m*. HydrotogK Un* M*>. 1974,
*X* 1:500,000 U9OS Accounting UM* of 0» MMiontf *«*»r CMM M*
•wk, 1*79 Kate 1 7.UO.OOO fKMAMOS HMtte*! Chart. No 11ST!.
     4. te«* 1 80,000.
| + | Tide Gage

| • | Flow Gage

[ A | Head of Tide

  J Estuarine Drainage Area (EDA)

  | Tidal Fresh Zone

  H Mixing Zone

  II Seawater Zone

    Hydrologic Cataloging Unit Boundary

    County Boundary

    Salinity Zone Boundary - Low Variability

    Salinity Zone Boundary - Moderate Variability

    Salinity Zone Boundary - High Variability
                                                                                  40 KILOMETERS
                                                                                                        Hmttonmt Oetmn &rvtce/NOAA
                                                                                                                                   3.11

-------
LlrJcOLN
                                  03180004

                                 IS1*! AN
        70203V08090201
                                                 COCK
                                                 Mississippi Sound
   08070100
        ST.
     •XC H A R L
   S T. J O H N
THE  BAPTIST
   OMrioglo* Sunmr. 9M* ol UMMtau. HySJatfL- UNI Itap. 1V7I
   1400.000. U.S
idto 1400.000. U.S. n«IOQlcll Survey. 9UH o< AllbiiM. HyUrAnlc
I** HW. l«7«. nk t 500.000. US GKMJC* Sunm. 9UM f
MMrti*tt. HwtakMlc Una Uw 1174. «•!• 1 500 ODD U8QB AOflun-
8ne Ui*i o* «• H««n* WMv D«a NfMnfc. H7t Kdt 1 7 SOO.OOC
                                                                                                     100 KILOMETERS
                                                                                                                           Mississippi  Sound
                                                                                                                           LA,  MS,  AL
                                                                                                                            S*p*rmt*ty Mapped Sutnystem
                                                                                                                            3 12a Lake Borgne
                                                                                                                            3. l?b Lake Pomcnanram
                                                                                                                        l+l Tide Gage

                                                                                                                        I • | Flow Gage


                                                                                                                        [T] Head of Tide


                                                                                                                          J Estuarine Drainage Area (EDA)


                                                                                                                          | Tidal Fresh Zone

                                                                                                                          H Mixing Zone


                                                                                                                          II Seawater Zone


                                                                                                                             Hydrologic Cataloging Unit Boundary

                                                                                                                             County Boundary


                                                                                                                             Salinity Zone Boundary - Low Variability


                                                                                                                             Salinity Zone Boundary - Moderate Variability


                                                                                                                             Salinity Zone Boundary - High Variability
                                                                                                                                Strmtfyic
                                                                                                                                                                    3.12

-------
        8070205
                                                      HANCOCK
                                                   M i s s i  s s i P;P i
SI AN A
                                    03T80004
                                                     03170009
                       08090201
                                                                Drainage Divide
     08090202
   JEFFERSON,
       08090301
                       08090203
       .
3 T. C'H A R L E S
                           08090100
                                                                   40 KILOMETERS
                                                          Lake Borgne
                                                          LA, MS
                                                          [+] Tide Gage


                                                          | • | Flow Gage


                                                          [ A | Head of Tide


                                                             I Estuarine Drainage Area (EDA)


                                                            I Tidal Fresh Zone


                                                            I Mixing Zone


                                                            II Seawater Zone


                                                          p^ Hydrologic Cataloging Unit Boundary


                                                          [— •) County Boundary


                                                            | Salinity Zone Boundary - Low Variability


                                                             Salinity Zone Boundary - Moderate Variability


                                                             Salinity Zone Boundary - High Variability
                                                                                   3.12a.

-------
                                                                              Lake Pontchartrain
                                                                              LA, MS
                                     0318000*
MSSISSIPPI
    T AIM G I P A H O A
H  '  v
   )  LI\AINGSTON
                            _O U I S  I AN
             0807020
                                                             03180004
 08070203
                                      08090201

                                     08090202
                            Tide Gage

                         [ • | Flow Gage

                            Head of Tide

                           J Estuarine Drainage Area (EDA)

                           I Tidal Fresh Zone

                            Mixing Zone

                            Seawater Zone

                         \—\ Hydrologic Cataloging Unit Boundary

                            County Boundary

                            Salinity Zone Boundary - Low Variability

                            Salinity Zone Boundary - Moderate Variability

                            Salinity Zone Boundary - High Variability
 S T. J O H N
   THE
 BAPTIST
 08070204
                                                              A'   Lake Bor9ne
08070100   ^^    ,^,

   ~\S T. CHARLES \JEFF E^To
                                                    S T. B E R N A R
         (  08090301
         N
                                                            08090203
                                               8090100
                                              PLAQUEMINES'
 W«ttr DM Network <«7T wafc 17.900,000 NOMMOSNwtcri
 No. 113W. Octater. IMS. KM 140,000
                                                                                  Oc»n A***»*m*nr* CHrliion
                                                                                  Otfic* of Ocf^nogrmphy wtd Hcrtnc
                                                                                      Oc»*n firvto/MOM
                                                                                                      3.12b.

-------
                               M  I\S  S  I S S
              08070204-^ ,,-y
                                                  ORLEANS^-'
                                                      /Drainage
                                                         Divide
      A S S U M P~t I O Nl_ _ f

                  "
                                               ^w

               U  I  S  I AN A
                                                   MEXICO
  i 500.000 U S QmogKai 9wn*y
LMIlfap, 1974 K*I 1 500.000 U9OS AflGMMdna IMUfllfH
Mississippi  Delta Regi
LA, MS
   | Tide Gage

   | Flow Gage

    Head of Tide

   I Estuarine Drainage Area (EDA)

  | Tidal Fresh Zone

  If Mixing Zone

  |j Seawater Zone

    Hydrologic Cataloging Unit Boundary

    County Boundary

    Salinity Zone Boundary - Low Variability

    Salinity Zone Boundary - Moderate Variability

    Salinity Zone Boundary - High Variability
                                                                                                        Ocwn A«w«m*ntt DMttofl

                                                                                                        NMon* Ocr
                                 3.13

-------
                                                                                            BER VILLE
VER  M I    I  O
                                                                                                 MART  IN
 U » ntn*iptn«l lurr«. MM el LouMww, llpm*^ iMi Uap, W4,

 «to1«0.000 iJ«M Accounting LWhollh«N*on*¥W*0«lf4*.

 «rt. 1I7I. Ktf* 1 7,500,000 HOMM06 NMOnl CMM Htt.
 Jtf* 'M4 M* vaO.OOO: N» (1361. D»jpn*ir '*W, K^B T
Atchafalaya and  Vernr
Bays
LA
                                                                                                                      |-y-[ Tide Gage


                                                                                                                      | • | Flow Gage


                                                                                                                      ["A"] Head of Tide


                                                                                                                          I Estuarine Drainage Area (EDA)


                                                                                                                         | Tidal  Fresh Zone


                                                                                                                        • Mixing Zone


                                                                                                                        JJ Seawater Zone


                                                                                                                      J—| Hydrologic Cataloging Unit Boundary


                                                                                                                      |— •] County Boundary


                                                                                                                           Salinity Zone Boundary - Low Variability


                                                                                                                           Salinity Zone Boundary - Moderate Variability


                                                                                                                           Salinity Zone Boundary - High Variability
                                                                                                  40  KILOMETERS
                                                                                                                                 Qcfin S*rvfc9'
                                        3.14

-------
                                                                      r—JJ El        ISDN
                                        08080205
                                                                                   L
                                                                      08080203
      CALCASI
                                 O  U  I  S  I AN A

                 12010005J     08080206
                                                                               08080202
CAMERON
U S OMtoglMl Survty. Sute d LoiAtaM. Hydrdoglc Unl M«p. H74
•Mto1:SOO,000. U9O8 Accounttng Unn of Vw NMtonat WMw D«M MM-
   1f79. Ktf» 1 7,500,000 NOAA/NOS NauUctf Ctwt fto. 11547.
Junt, 1M4, MM 1:50.000
                                                                                                   Calcasieu  Lake
                                                                                                   LA
I+1 Tide Gage


[ • | Flow Gage


[T] Head of Tide


  J Estuarine Drainage Area (EDA)


  | Tidal Fresh Zone


  S Mixing Zone


  JJ Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


[— -j County Boundary


  I Salinity Zone Boundary - Low Variability


  fl Salinity Zone Boundary - Moderate Variability


    Salinity Zone Boundary - High Variability
                                                                      Oettn Atmffftntntf OtvWort
                                                                      Offiew of Ocm^tognphy mnd Hi
                                                                      Htilon* Oewrt S*rvte»/«O>W
                                                                                                                                  3.15

-------
        TY/LE R
                                                               BEAUREGARD
12020006
                                       NEWTON
H A RfD I  N
                                                                LOUISIANA

                                                                    08080205
                          TEiXAS

                                12010005
12020003
                                                                    CALCASI
 12020007
                               O RIA N G E

                                     \
                                                                       08080206
                                                                  CAMERON
JEF   ERSON

     12040201
      2040202
  U.S. OMtogk* 9u«v»y. CM* of UMttim. HydujfcigtL Unll Map. tin,
  •cat* i 500.000, U S Qwl)0lc«l9uv^. SMtotTmu, HydratoglcUn*
    1174. **• 1 500.000 U90S AeoouMMO UNO ol *• tN
    M« NMvrotli. <>», raM 1 7.900.000. NCXumOS NnOol
                                                                                    Sabine Lake
                                                                                    LA,  TX
                                                                             l+l Tide Gage

                                                                             | • | Flow Gage

                                                                             ["A] Head of Tide

                                                                              J Estuarine Drainage Area (EDA)

                                                                              | Tidal Fresh Zone

                                                                              I Mixing Zone

                                                                              II Seawater Zone

                                                                             p^ Hydrologic Cataloging Unit Boundary

                                                                             |~ -j County Boundary

                                                                              | Salinity Zone Boundary - Low Variability

                                                                              B Salinity Zone Boundary - Moderate Variability

                                                                                Salinity Zone Boundary - High Variability
                                                                                                  rSrancft
                                                                                                 iDMfton
                                                                                        Otncm of Octsnogripfiy mnd ***rtm
                                                                                        HitlonH Ocein Srrvlct/HOAA
                                                                                                                        3.16

-------
                                                      L I & ,_ ri T Y
       12040101
              *^-^
              12040104
                                                       12030203
HARRIS
                                                                      ;x AS
                                 1204020
                                                                CHAMBERS
                                                               2040202
             GALVESTON
BfR A Z O R I Av
 2040205
US, 0«e*J^CH Sun*t. MM D( T«OM. Hyfculugb UNI M*. 1f74
1500,000 u9G8Acoou<«ngUM»olMNMonal
itm m. t 7 soo ooo NOAWMM NUXM CNM NO 11322
1t*4. «• 1:40.000; No 1132& tef. 10*4. nM 1 2S.OOO
                                                                           24 MILES

                                                                             i|
                                                                             40  KILOMETERS
                                                                                            Galveston Bay
                                                                                            TX
                                                                                            14" | Tide Gage

                                                                                            | • | Flow Gage

                                                                                            |"A"| Head of Tide

                                                                                               I Estuarine Drainage Area (EDA)

                                                                                              | Tidal Fresh Zone

                                                                                              H Mixing Zone

                                                                                              JJ Seawater Zone

                                                                                            \—\ Hydrologic Cataloging Unit Boundary

                                                                                            p -j County Boundary

                                                                                               | Salinity Zone Boundary - Low Variability

                                                                                               I Salinity Zone Boundary - Moderate Variability

                                                                                                Salinity Zone Boundary - High Variability
                                                                                                 r, ..r«»...,,i.,iri crMHon"
                                                                                                 Offlc* of Ocffnoprmptiy mnti Htrtnt
                                                                                                                           3.17

-------
                              12090402

                        MATAGORDA
U S CKufcjgfcaJ Sm«y. SUM of T«u*. Itytfcufagh. UNI !!•(> 1174. MM*
 500.009 USQS Accounting UT» of flw Nattonil WMw 0*M N«mxV.
 97V IMto • 7.300.000 MOAAMOS NauHctf CIMfl No 11322 M««*
       40.000
                                                                                                    40 KILOMETERS
                                                                                                                        Brazos  River
                                                                                                                        TX
l+l Tide Gage

| • I Flow Gage

[~A~| Head of Tide

  J Estuarine Drainage Area (EDA)

   I Tidal Fresh Zone

  H Mixing Zone

  JJ Seawater Zone

p~\ Hydrologic Cataloging Unit Boundary

f~ -j County Boundary

  B Salinity Zone Boundary - Low Variability

^y Salinity Zone Boundary - Moderate Variability

     Salinity Zone Boundary - High Variability
Strategic A»M»\
Ocemr A*9ft»m
Ott'cr ot Ocftn
National Ocein
OMtion
  tnd M*Hn« A
 •/MOM
                                        3.18

-------
                                                              GULF
U 8. Ctootogfc* Survvy, SUM of TWM. HT»U*O^C UnM M*>. 1174,
T 900.000 USOS Aowurflng Unto of •« HalHiii* WM«i CM* H»t»Offc.
1I7», tat* t 7.500,000 NOAAMOS NMlHl &mm No. 1131*. My,
19»4, K*t 1 tO.OOO No H31T. B«lwnter, 1M3. 1 SO.000
                  16
                                                                                                             N
10
           20
30
                                24 MILES

                                  40  KILOMETERS
                                                                                                                    Matagorda  Bay
                                                                                                                    TX
                                                      [+] Tide Gage

                                                      | • | Flow Gage

                                                      | A | Head of Tide

                                                        J Estuarme Drainage Area (EDA)

                                                        | Tidal Fresh Zone

                                                          Mixing Zone

                                                          Seawater Zone

                                                          Hydrologic Cataloging Unit Boundary

                                                          County Boundary

                                                          Salinity Zone Boundary - Low Variability

                                                          Salinity Zone Boundary • Moderate Variability

                                                          Salinity Zone Boundary - High Variability
                                                                                                                              rf OCMnpgrapAx and Mpifcn 4n
                                                                                                                              rf OcMn SintcflHOAA
                                                                                            3.19

-------
                                                                                                                       San  Antonio Bay
                                                                                                                       TX
u «. ataatai 9»v«r «•• at Tm, M»*<*0> iw uv. m*.
1 500,000 UflOS facovHIlq UnM o(
H71. KM I 7.800.000 NOAMO* HlOK OM< *> 11911.
1X9. «M 1 B.OW. No 11911. Mr. tlH. "*• I H.MD
                                                                                                                        H
                                                                                                                        D
Tide Gage


Flow Gage


Head of Tide


Esluarine Drainage Area (EDA)


Tidal Fresh Zone


Mixing Zone


Seawater Zone


Hydrologic Cataloging Unit Boundary


County Boundary


Salinity Zone Boundary • Low Variability


Salinity Zone Boundary • Moderate Variability


Salinity Zone Boundary • High Variability
                                                                                                                        H
                                                                                                                                    Oeimognptiy v
                                                                                                                                    OCMTI S«rvte«/W
                                    3.20

-------
                                        VICTOR
                       12100303  !
I  \J2100204 \^\1
                    '-V^ C A L H O U N
            GOLI AD
                                 RE X A S

                                     REFU GIO


                                              121100405
SAN  PATRICIO
                 12100407 AARANSAS
                          Drainage Divide
          12110201
 12110111
        NUECES
       12110202
ii». *rM* VT.aeO.flOO NOAA/MOB NMOC^ Chwi Me 1131*.
  , «c«** 1 40.000
                                                                                  Aransas Bay
                                                                                  TX
[•+•[ Tide Gage


[ • | Flow Gage

[A"| Head of Tide


  j Estuarine Drainage Area (EDA)


  J Tidal Fresh Zone


  H Mixing Zone


  JJ Seawater Zone


   Hydrologic Cataloging Unit Boundary


   County Boundary


   Salinity Zone Boundary - Low Variability


   Salinity Zone Boundary - Moderate Variability


   Salinity Zone Boundary - High Variability

                                                                                          Oc**nognpht mod Ito
                                                                                          OeMnS«rvlc«/MO>U
                                                                        3.21

-------
          12110205

           12110204
US te«ogUI8m>r.aia>olT«w.H)iMvlclMM«lt
1 500.000 U8O9 Awourttng UnM t* «m NMOntf WMr D«a
Itn Mto 1 7,300.000 NOAA/NO8 >!••** Chart No 11».
1182. Ktf* 1.40.000
                                                                                                             Corpus Christ!  Bay
                                                                                                             TX
                                                                                                                                              Egluanr*
                                                                                                                                              Ormnag*
                                                                                                                                               Area
|-4-1 Tide Gage

[•] Flow Gage

[T] Head of Tide

   I Estuarine Drainage Area (EDA)

  | Tidal Fresh Zone

  | Mixing Zone

  N Seawater Zone

p^ Hydrologic Cataloging Unit Boundary

f- -| County Boundary

  | Salinity Zone Boundary - Low Variability

    Salinity Zone Boundary - Moderate Variability

    Salinity Zone Boundary - High Variability
                                                                                           40  KILOMETERS
          Ocftnogrmpttf1 and Martn* A*
          Oe-mn S*rvlM/NOA4
3.22

-------
                                                                                                    Upper
                                                                                           Laguna Madre
                                                                                          GULF    OF

                                                                                            MEXICO
13080003
       l    J IM HOGG

27°
                                 TEXAS

                                       12110207
                                                                                           •  Emerging
                                                                                           Land Bridge
                                                                                                    Lower
                                                                                           Laguna Madre
                                                                   W I L L AC Y

                                                            12110208
uT (Mope* Sutvn. 9««
1 500000 (1933 tax****
           a not, Hrdntogfc IM mo. 1174.10111
WO. IIMS taauntol Urt» t> *• Httool Mm CM> NMxM.
MM* 1 7,900.000. NOAJVNG*
                                                                      0      8      16     24  MILES
                                                                            I  III   I   '
                                                                      0     10    20    30    40  KILOMETERS
                                                                                                                Laguna Madre
                                                                                                                TX
                                                                                                                 Scp*r*ttrty Mapped &
                                                                                                                 323a Baffin Bay |—
                                                                                                                   14" |  Tide Gage

                                                                                                                   | • |  Flow Gage

                                                                                                                   [A]  Head of Tide

                                                                                                                     J  Estuarine Drainage Area (EDA)

                                                                                                                        Tidal Fresh Zone

                                                                                                                        Mixing Zone

                                                                                                                        Seawater Zone

                                                                                                                        Hydrologic Cataloging Unit Boundary

                                                                                                                        County Boundary

                                                                                                                        Salinity Zone Boundary • Low Variability

                                                                                                                        Salinity Zone Boundary - Moderate Variability

                                                                                                                        Salinity Zone Boundary - High Variability
                                                                                                                     NMftvuf Oc**n S*YVM/
                                                                                                                                                     3.23

-------
                              12110111
                                                                     Corpus Christl Bay
                                                   12110202
                            N U EC ES
                  10204
                                                                   10203
                                      12110205
                   KL    BERG
12110206
                                                                           OF

                                                                      MEXICO
3ROOKSi
KENE  DY
                        12110207
UB o«ta«al Imq. KM » TUM. HfHofc Un« Uaf. 1»74,
1-SOO 000 USOS Aceounttng Unta of»» nrtjial VMir Dm
1t7«. loH I 7.SOO.OOO MOAMNOe NMim Ctwl No I13W. M,.
     40.000
                                                                           24  MILES

                                                                            ^
                                                                            40 KILOMETERS
                                                                                           Baffin Bay
                                                                                           TX
|-y-| Tide Gage

[ 9 \ Flow Gage

    Head of Tide

    Estuarine Drainage Area (EDA)

    Tidal Fresh Zone

    Mixing Zone

  JJ Seawater Zone

    Hydrologic Cataloging Unit Boundary

    County Boundary

    Salinity Zone Boundary - Low Variability

    Salinity Zone Boundary - Moderate Variability

    Salinity Zone Boundary - High Variability
                                                                   Strategic Aaaeatmfrtt Branch
                                                                   Ocean Aaatfamenff Dlvllton
                                                                   Otttcf ol Oftanoffraptttf anrf Hfrln*
                                                                   National Ocean
                                                                                                                       3.23a.

-------
                                               18070302
                                                    SAN  DIEGO
                                                 C A  I   I  FO  R N  I  A
                                                         Drainage Divide
                                                                                  18070305
                                                                                      Drainage Divide
                                                               M IIXICO
K^B i 500 000 U9OS Accounitng l>nlls ot m« NMtonal Wttw D«U Nat-
wort. 1979. scat* < 7,500.000 NOAA/HO6 Kaotfc* Owl No 18T73,
M*y, IM3. Ktfe 1 12.000
                                                                                           40 KILOMETERS
                                                                                                             San Diego  Bay
                                                                                                             CA
| + | Tide Gage


I • | Flow Gage


| A | Head of Tide


   I Esluarine Drainage Area (EDA)


   I Tidal Fresh Zone


  H Mixing Zone


  JJ Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


\- -\ County Boundary


  J Salinity Zone Boundary - Low Variability


    Salinity Zone Boundary - Moderate Variability


    Salinity Zone Boundary - High Variability
                                                                                                                   Strategic
                                                                                                                               f Brmnch
                                                                                                                               Dlvlaton
                                    4.01

-------
               Drainage Divide
•ate 1 900.000 U9O8 Accounvno IMM o* tt« NMIOfwi VMK DOM NM-
work, 1*79. Kri* 1 7.300,000 NOAA/NOS N«UI1C« Chtrt Mo 1(74*.

      4. nk I 20.000
                                                                                                                       San Pedro  Bay
                                                                                                                       CA
1^1 Tide Gage


[ • | Flow Gage


[~A"| Head of Tide


    I Estuarine Drainage Area (EDA)


   I Tidal Fresh Zone


  I] Mixing Zone


  JJ Seawater Zone


     Hydrologic Cataloging Unit Boundary


     County Boundary


    | Salinity Zone Boundary - Low Variability


     Salinity Zone Boundary • Moderate Variability


     Salinity Zone Boundary - High Variability
                                                                                                                                                                4.02

-------
            VENTURA
           18070103
LOS    ANGELES
                                  CALIFORNIA      18070105
                         •^- Drainage Divide
                                           18070104
                                                          -*-Drainage Divide
         PACIFIC
                          OCEAN
•CM* 1 BOO 000. US03 Acoxrtng unn * »M
  971. m§1 7.900 QUO NOUmiM
If 1M3 Mtfa 1:«
-------
                                                  18050004
                             SANTA CLARA
    18050006

   SAN MATED
                                     18050003

                                  CALIFORNIA
        \SANTA ^CRUZ
            Drainage ^*»-
             Divide
                         18060001
                                                          18060002
PACIFIC
     SAN

\\ B E N I T 0
                                             1806001
             OCEAN
                                                          18060005
                                       Drainage
                                       Divide
                                          MONTERE

                                            18060012
                            18060006
 OUOfM Survn am « CMtnM, HrMoglc IM Mp, ttn,
 (900000 U3OS Aocourong UnM of IM
     :T.60D.OOO
                Monterey Bay
                CA
|-y| Tide Gage

| *) | Flow Gage

   Head of Tide


   Estuarine Drainage Area (EDA)

   Tidal Fresh Zone

   Mixing Zone

 JJ Seawater Zone


p~'j Hydrologic Cataloging Unit Boundary

\- -I County Boundary

  | Salinity Zone Boundary - Low Variability

  | Salinity Zone Boundary - Moderate Variability

   Salinity Zone Boundary - High Variability
                                                                                                  4.04

-------
18010111      >
                   IN APA
   SONOMA    ^v
        18050002^
                                            SOLANO
18020109
                                                 18050001
 M AR I N

18050005
                                                                   18040003
                                                          C Al  I  FO R  NI  A
                                                              A LAM E  DA
                                                                   18050004
                                                            18050003
                             18050006
 US (Mofal Sunn. MH a
 tc«* 1 800.000
   Itn. taH V7.SOO.OOO
        1 40.000
                                                                                     San Francisco Bay
                                                                                     CA
                                                                                     H
                                                                                     D
                    Tide Gage

                    Flow Gage

                    Head of Tide

                    Estuarine Drainage Area (EDA)

                    Tidal Fresh Zone

                    Mixing Zone

                    Seawater Zone

                    Hydrologic Cataloging Unit Boundary

                    County Boundary

                    Salinity Zone Boundary - Low Variability

                    Salinity Zone Boundary - Moderate Variability

                    Salinity Zone Boundary - High Variability
                                                                                             fl»»tt»tntn1 Ormneh
                                                                                         Octmn Au«*wiwnr« Dtvltlcn
                                                                                         ONlct ot OcfmnoorWy *** Hlfin* AlSftsmtnl
                                                                                         Nltlonml Ocfmn Sfrvicr JHOAA
                                            4.05

-------
                                                                    18020111
       18020117
                                                             SACRAMEENTO
                                         18020109

                                   .I FOR N I  A
 V 18050002
                         18040005
                     18050001
       SO LA NO
                                                                       SAN
                                                                    JOAQUIN
                                                                  18040003
          \   ^18050004
                                     ALAME DA
0                    16          24 MILES
           	:—b-^-——^
        10       20       30       40 KILOMETER
wort. IfTV. K«M t 7.900.000 NOAAMOA NauOori Owl No. 1
I). 19M. ICiH I 10.000
                                                Suisun Bay
                                                CA
                                                l+ Tide Gage


                                                [• ] Flow Gage


                                                [T] Head of Tide


                                                  I Estuarine Drainage Area (EDA)


                                                  | Tidal Fresh Zone


                                                 U Mixing Zone


                                                 JJ Seawater Zone


                                                \—\ Hydrologic Cataloging Unit Boundary


                                                |— -^ County Boundary


                                                 N Salinity Zone Boundary - Low Variability


                                                 g Salinity Zone Boundary - Moderate Variability


                                                 11 Salinity Zone Boundary - High Variability
                                                                                          Oftlct ol Occunogriptiy ind Uirlni A*»twn»n1  A
                                                                                          NMOnil Oce.n S«rvK« /MOJM          H .

-------
                                         18010102
                                                                  18010212
                                         H U M BOLDT
                                              CALIFORNIA
                                                          18010105
                    18010107
                                                18010106
                                                MENDOCINO
                                          18010108
u 9. OMogUI am*. 9UU a C00M*. HyMtfc Ml Ike. H74.
icM I SOCOOO U90S Mooirtng Unk * M WHOM WMr CM> W
•o*. tf7« •»!• 1 7,500.000 U.S.
24  MILES

 ^
 40 KILOMETER
                                                                                       Eel River
                                                                                       CA
                                                                                                        FkMtl
                                                                                                       Drmtmg,
                |+| Tide Gage

                | • [ Flow Gage

                FA] Head of Tide

                  J Estuarine Drainage Area (EDA)

                  | Tidal Fresh Zone

                  I Mixing Zone

                  II Seawater Zone

                p™j Hydrologic Cataloging Unit Boundary

                f- -1 County Boundary

                    Salinity Zone Boundary - Low Variability

                   I Salinity Zone Boundary - Moderate Variability

                    Salinity Zone Boundary - High Variability
                                                                                                                    4.06

-------
                                                                          18010210
  PACIFIC
                                                            18010209
CALIFORNIA
                   .          ,
   1 500 000 U3Q8 Aocounflng Utnw of ttw Ncflontf W«ur Oft! Hut
-X* 1tn. **H ' 7.SOD.OOO NOAAMOS IMuoctf CM No 1H22.
Augun. 1003. KM* 1 M 000
                  i a
                               24 MILES
                                                        10
                                                                  20
                                                                             30
                                                                                       40  KILOMETERS
                                                  Humboldt Bay
                                                  CA
                                                                                                         [>•] Tide Gage

                                                                                                         | • I Flow Gage

                                                                                                         | A | Head of Tide

                                                                                                            I Estuarine Drainage Area (EDA)

                                                                                                           I Tidal Fresh Zone

                                                                                                           U Mixing Zone

                                                                                                           JJ Seawater Zone

                                                                                                             Hydrologic Cataloging Unit Boundary

                                                                                                           - County Boundary

                                                                                                           J Salinity Zone Boundary - Low Variability

                                                                                                           H Salinity Zone Boundary - Moderate Variability

                                                                                                           Il Salinity Zone Boundary - High Variability
                                                        Strategic 4»«B*
                                                        Oc««n Atifsemt
                                                        Ofttce of Octinogriphy tna Ufrlnf Atsestment
                                                        Ntlionil Ocfin Sfrvlce/HOA*
4.07

-------
                                18010101


                             N ORTE
                                                                                  SKI YO U   \
                                                                                                        O
                                                                                                        00
PACIFIC    NT—
 U 5 Ocotogeal Survey St*» of Cafttormi, htytfotogtc UnK Map. 1(74

 •cat* 1500.000 USO5 Accounting Unflg o< »<•

 wort 1979 KaMl 7.500.000 US Q«*>gic*&rv«v R«qu«,C«M>mM.

 Tooogrmphtc Ouadrvtgl*, 1066, *cat« 1 ?4.000.
                                                                                                                Klamath  River
                                                                                                                CA, OR
| + |  Tide Gage


| • |  Flow Gage


| A |  Head of Tide


   I  Estuarine Drainage Area (EDA)


  |  Tidal Fresh Zone


  II  Mixing Zone


  JJ  Seawater Zone


     Hydrologic Cataloging Unit Boundary


     County Boundary


     Salinity Zone Boundary - Low Variability


     Salinity Zone Boundary - Moderate Variability


     Salinity Zone Boundary - High Variability

                                                             10
                                                                       20
                                                                                  30
                                                                                             40  KILOMETERS
                 I Branch
                I Division
      Office of Oceanography and Marine Assessment
      National Ocean Service? NO A A
                                                                                                                                                     4.08

-------
New NEI Estuary
                                                                   Rogue River
                                                                   OR

-------
                               Unit htap, 1»74.
    500 000 U9GS Accounttog Units ol Bw
*ort. '979, tea* 1 7.500000 NOAA/NOS N*utlc«< CtMrl No 18SB7
Marcn I9A4. scaw i 4O.OOO
                                                                                                 30          40  KILOMETERS
                                                                                                                                     Coos  Bay
                                                                                                                                     OR
                                                                                                                                         Tide Gage

                                                                                                                                        | Flow Gage

                                                                                                                                         Head of Tide

                                                                                                                                        I Estuarine Drainage Area (EDA)

                                                                                                                                       | Tidal Fresh Zone

                                                                                                                                       |j Mixing Zone

                                                                                                                                       JJ Seawaler Zone

                                                                                                                                         Hydrologic Cataloging Unit Boundary

                                                                                                                                         County  Boundary

                                                                                                                                         Salinity Zone Boundary - Low Variability

                                                                                                                                         Salinity Zone Boundary - Moderate Variability

                                                                                                                                         Salinity Zone Boundary - High Variability
              t Brmnch
              Dlvitlon
Office ot OcwMnofrwfthy ind Mlrtn*
Hltlonil Ocsin Service,'HOAA
                                                                                                                                                                              4.09

-------
            17100302 
-------
New NEl Estuary
                                                                           \    t
                                                                        Sulslaw River
                                                                        OR

-------
New NE! Estuary

-------
New NEI Estuary
                                                                   Yaquina  Bay
                                                                   OR

-------
New NEI Estuary
I
                                            Siletz  Bay
                                            OR

-------
New NEI Estuary
                                               Pacific  0
cean
                                                               Wilson Seach
     Netarts Bay
     OR

-------
New NEI Estuary
    Tillamook Bay
    OR

-------
                ftcific-  Ocean
o   z
33   »
    
-------
                                                             17100103
                         17100106
                                 Columbia

                              17080006
                                                              17080003
                                                           COLU

                                                             17090012
17100201
                    OREGON

                      17100202
  a«ota#c* 3unNy. MM « ongoa. HtOmto^ Unc Hap. ifn.
            MtUmglMMUMmKMOMI-
                                                      24 MILES

                                                        I
                                                        40 KILOMETERS
nM • MO 000 ume
-«**. IfTl K*» 1 7.500 000 NOMMO8 MMJUat Owl M* tlttl
   M4. KM • W.OOO
                                                                                        Columbia River
                                                                                        WA, OR
|+| Tide Gage

| • | Flow Gage

| A | Head of Tide

  J Estuarine Drainage Area (EDA)

H| Tidal Fresh Zone

  I Mixing Zone

  j] SeawaterZone

    Hydrologic Cataloging Unit Boundary

    County Boundary

    Salinity Zone Boundary - Low Variability

    Salinity Zone Boundary • Moderate Variability

    Salinity Zone Boundary - High Variability
                                                                                            Offlc* o/ Oo».wiOiflr..pfty .vxf AteffrM
                                                                                            Hmttottml Oemmn S»rrtc*/HOAA
                             4.11

-------
     GRAYS  HARBOR
WASHINGTON
                                                                   Willapa Bay
                                                                   WA
                                                                   |-f-| Tide Gage


                                                                   [•] Flow Gage


                                                                   [T] Head of Tide


                                                                      I Estuarine Drainage Area (EDA)


                                                                   | Tidal Fresh Zone


                                                                     I Mixing Zone


                                                                     JJ Seawater Zone


                                                                   p-^ Hydrologic Cataloging Unit Boundary


                                                                   |~ -\ County Boundary


                                                                     | Salinity Zone Boundary - Low Variability


                                                                       Salinity Zone Boundary - Moderate Variability


                                                                       Salinity Zone Boundary - High Variability
                                                                                                         4.12

-------
                                JEFFERSON
                                                                        17110018
                                                              17110017
           17100102
        GRAYS  HAR
                                                                          7110019
H I  N G TON
                       17100105
                                                                     THURSTJON

                                                                        171001103
                 17100106
                                           PACIFIC
U30S Aocoonflng Ur*« 0< Itw Manor* Water O« N«wt IffTV. Mri»
1 7.900.000 MOAA/NOS NauMctf Chart No 1K02. DwxrfllMf 10«t,
  V40.000
                                                                  30       40 KILOMETERS
                                                                                         Grays Harbor
                                                                                         WA
|^| Tide Gage


| • | Flow Gage


|"A"| Head of Tide


   I Estuarine Drainage Area (EDA)


  | Tidal Fresh Zone


  I Mixing Zone


  JJ Seawater Zone


p^ Hydrologic Cataloging Unit Boundary


[— -j County Boundary


  J Salinity Zone Boundary - Low Variability


  0 Salinity Zone Boundary - Moderate Variability


    Salinity Zone Boundary - High Variability
                                                                       Oc*fnogrw*y Htd Mmkii Am
                                                                       Oc»*j S9rvk»/NOAA
                             4.13

-------
                                                                                                                                  Puget Sound
                                                                                                                                  WA,  BC
          1:100.000; Me iftttl. ktarorv 1«M, «e*4 vM.OOO; Mo.
18471, Juty, 1M3, MM 1 40.000  MMK)  .
tVWiwMc SMtorw U«p, BrtWi CdhmMa. f«78. nto ! 2.000.000
CwwMn Hyttav.vMcS.trvk).!, HMMI Owl r*j UC-JOOi  Hvth.
^•Be.KMI
                                                                                                                                                           Sfpgritety Hipped Subsyttemi
                                                                                                                                                           4 14* Hood Canal
                                                                                                                                                           4 14t> SkaQiiBay
                                                                                                                                                                    Fluvial
                                                                                                                                                                    Drainage
                                                                                                                                                                     Area
                                                                                                                                             Estuanne
                                                                                                                                             Drainage
                                                                                                                                               Area
                                                                                                                                   ^j Tide Gage

                                                                                                                                   •J Flow Gage

                                                                                                                                   A] Head of Tide

                                                                                                                                    J Estuarine Drainage Area (EDA)

                                                                                                                                    | Tidal Fresh Zone

                                                                                                                                       Mixing Zone

                                                                                                                                       Seawater Zone

                                                                                                                                       Hydrologic Cataloging Unit Boundary

                                                                                                                                       County Boundary

                                                                                                                                       Salinity Zone Boundary - Low Variability

                                                                                                                                       Salinity Zone Boundary • Moderate Variability

                                                                                                                                       Salinity Zone Boundary - High Variability
                                                                                                                                                                            4.14

-------
     ?/*/ T     OF     JUAN

        DE      FUCA
                C LAL LA M
                                                                            17110019
                17110020
        JEFFERSON
                 WAS HIN Gl
                        '. :•''


                        17110018
                                                           Kl  TSAP
       17110017
                                                        17110019
    •17100104
LI 3 GwtogltM Sunvy 9tM* ol WUNn0BV Hyrirotoffc Umt MBC> < 074
  ' 900.000 U9QS Actount^t umtt at tt» N«1onal w*w (Ma
  im. UU I 7.500.000 NOAA/NOS UuOcH Cti«l No 18*73,
           *r •,.
Hood Canal
WA
H
H
B
Tide Gage


Flow Gage


Head of Tide


Estuarine Drainage Area (EDA)


Tidal Fresh Zone


Mixing Zone


Seawater Zone


Hydrologic Cataloging Unit Boundary


County Boundary


Salinity Zone Boundary - Low Variability


Salinity Zone Boundary - Moderate Variability


Salinity Zone Boundary - High Variability
                                                                                                 |K Strtttglc Assfttm+nt Brmnch
                                                                                                 ' Ocean As**atmenli Division
                                                                                                   Otfic* ot Oceinogrupby mnd Marine Aiifiimen!
                                                                                                                             _  . _

                                                                                                                            4.143.

-------
  rr^ift
        O"~x!
                                          Skagil

                                         17110007
        Drainage Divide
                                    17110012
                                              KING
US QMDgldl Surv^r. Sat. rt WnMngnr. »r*«°t>c Wl MK> 1>74
    500 000 USQS Accounting Uom of Iti« Nctlontf WB«f Dra
•Oft I»7S. lent I 7.500000 NO*A«O8 N«uM» Ch»1 No IW73
       «3 *caM 1 40,000
      16            24 MILES

       —••••
20         30         40  KILOMETERS
                                                                                                                 Skagit Bay
                                                                                                                 WA
                                          | "4" | Tide Gage

                                          | • | Flow Gage

                                          [A] Head of Tide


                                             I Estuarine Drainage Area (EDA)

                                            I Tidal Fresh Zone

                                           m Mixing Zone

                                            II Seawater Zone


                                          p~| Hydrologic Cataloging Unit Boundary

                                          p "] County Boundary

                                           H Salinity Zone Boundary - Low Variability

                                           ^ Salinity Zone Boundary - Moderate Variability


                                          |HI| Salinity Zone Boundary - High Variability
Strategic Aastaament Branch

Office ol Oceanography ana Marine
National Ocean Sfrvlce/NOAA
                                                                                                                                                   4.14b.

-------
RIVERS AND STREAMS

-------
Rivers and Streams

-------
NATIONAL COASTAL POLLUTANT DISCHARGE INVENTOR!
  Rivers and Streaas Entering Coastal Counties
                                                                                 Page  1
RPA
Region
mm












i
i
i
i
i
i








i
2
2
2
2
2
2
2
2
2
2
2
2

State
DDDD
MB
MB
HB
HB
HB
HB
HB
MB
HB
HB
HB
NH
HA
MA
HA
RI
BI
CT
CT
CT
CT
CT
CT
CT
CT
CT
CT
NY
NY
NY
NY
NY
NY
NY
NY
NY
NJ
NJ
NJ

River
mmmmmm
St. Croii River
Junior Creek
Buffalo Streai
Penobscot River
Sheepscot River
Eastern River
Bennebec River
Androscoggin River
Crooked River
Saco River
Ossipee River
Salion Falls River
Herriiack River
Nashua River
Assabet River
Hill River
Blackstone River
Quinebaug River
Little River
Shetucket River
Blackledge River
Connecticut River
Quinnipiac River
Naugatuck River
Shepaug River
Poaperaug River
Housatonic River
Owl Kill
Little White Creek
Valoonsac River
Hoosic River
Anthony Rill
Mohawk River
Dorians Rill
Sandburg Creek
Hudson River
Passaic River
Raritan River
Green Brook
Long ten
flow at
River
Discharges
coastal cty
boundary
(cfs)
DDDDDDDD
462
114
77
14148
122
70
9516
6489
425
1841
886
137
6622
423
242
18
760
1101
57
765
91
18077
222
221
2(7
154
2081
100
66
262
440
580
5801
70
52
8439
1404
1189
98
In
NCPDI
D00DD
N
N
N
Y
N
H
Y
Y
N
Y
N
N
Y
N
N
N
N
Y
N
N
N
Y
N
N
N
N
Y
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Reach
Nuober
mmmm
01050001108
01050001068
01050002132
01020005022
01050003055
01030003003
01030003004
01040002001
01060001027
01060002003
01060002040
01060003012
01070002010
01070004005
01070005002
01090003005
01090003006
01100001004
01100002019
01100002002
01080205018
01080205022
01100004026
01100005003
01100005013
01100005010
01100005022
02020003028
02020003027
02020003022
02020003016
02020003074
02020004001
02020006056
02020007011
02020003002
02030103010
02030105004
02030105003
NBI
Estuary
Code
CDDOD
101
101
104
105
107
107
107
107
108
109
109
110
111
111
111
115
115
117
117
117
117
117
117
117
117
117
117
119
119
119
119
119
119
119
119
119
119
119
119
Directly

Estuary Naae
to

mmmmmmmmmm
Passanaquoddy Bay
Passaaaquoddy Bay
Blue Hill Bay
Penobscot Bay
Sheepscot Bay
Sheepscot Bay
Sheepscot Bay
Sheepscot Bay
Casco Bay
Saco Bay
Saco Bay
Great Bay
Herrmack River
Hernnack River
Merrinack River
Narragansett Bay
Narragansett Bay
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Long Island Sound
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan
Hudson River/Raritan



























Bay
Bay
Bay
Bay
Bay
Bay
Bay
Bay
Bay
Bay
Bay
Bay
Bstuary
(Y/N)
DDDDODD
Y
N
N
Y
Y
Y
Y
Y
N
Y
N
N
Y
N
N
N
Y
II
N
N
N
Y
Y
N
N
N
Y
N
N
N
N
H
N
N
N
Y
N
Y
N

-------
NATIONAL COASTAL POLLUTANT DISCHARGE INVENTORY
  Rivers and Streans Entering Coastal Counties
                                                                                 Page  I
EPA
Region
OODODD
3
3






3
3
3
3
3
3
3





3
3
3
3
3
3
3
3







3
3
3
4
4
4
4

State
DODO
PA
PA
PA
PA
PA
Pi
PA
PA
DB
DB
DB
HD
HD
HD
HD
HD
HD
HD
HD
HD
HD
HD
DC
DC
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
NC
NC
NC
NC

River
DDDDDDDDDDDODDDDDDDD
Delaware River
Schaylkill River
Vissahickon Creek
Pennypack Creek
Darby Creek
Crun Creek
Ridley Creek
Chester Creek
Brandywine Creek
Red Clay Creek
White Clay Creek
Blk Creek
Octoraro Creek
Conowingo Creek
Susquehanna River
Patapsco River
Deer Creek
Little Patuzent River
Kiddle Patuzent River
Patuzent River
NB Branch Anacostia
NV Branch Anacostia
Potonac River
Rock Creek
Tuckahoe Creek
Janes River
Swift Creek
Apponattoz River
Tributary North Anna
Terrys Run
Panunkey Creek
Chickahoniny River
Panunkey River
Bull Run
Kettle Run
Broad Run
Rappahannock River
Cedar Run
Heherrin River
Nottoway River
Potecasi Creek
Roanoke River
Long ten
flow at
coastal cty
boundary
(cfs)
ODDDDDDD
13884
2943
87
73
99
41
71
108
512
88
130
111
276
69
37294
320
233
51
50
160
99
59
11373
94
74
7287
160
1478
50
31
53
411
1287
15
50
52
1685
219
1314
1842
164
7540



In
NCPDI
DODOD
N
Y
H
N
N
H
N
N
N
N
N
N
N
N
Y
N
N
N
N
N
N
H
Y
N
N
Y
N
Y
N
N
N
N
Y
N
N
N
Y
N
Y
Y
N
Y



Reach
Nunber
DDDDODDDDMD
02040201001
02040203003
02040203002
02040202069
020(0202075
02040202080
02040202081
02040202082
02040205006
02040205013
02040205014
02060002050
02050306010
02050306017
02050306021
02060003028
02050306076
02060006020
02060006021
02060006022
02070010030
02070010031
02070008001
02070008036
02080205002
92080205003
02080207002
02080207003
02080106018
02080106021
02080106023
02080206031
02080106006
02070010055
02070010065
02070010064
02080104042
02070010066
03010204003
03010201001
03010204030
03010107007


NBI
Estuary
Code
OOOOD
121
121
121
121
121
121
121
121
121
121
121
123
123
123
123
123
123
123
123
123
123a
123a
123a
123a
123
123
123
123
123
123
123
123
123
123a
123a
123a
123a
123a
201
201
201
201




Estuary Nane
mmmmmmmmmm
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Delaware Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Potoaac River
Potoaac River
Potonac River
Potonac River
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Chesapeake Bay
Potonac River
Potoaac River
Potonac River
Potoiac River
Potonac River
Albenarle Sound
Albenarle Sound
Albenarle Sound
Albenarle Sound
River
Discharges
Directly
to Estuary
(Y/N)
ODDDODD
Y
N
N
N
N
N
H
N
N
N
N
N
H
N
Y
Y
N
N
N
Y
N
N
Y
II
N
Y
N
N
N
M
N
N
Y
H
N
N
Y
N
N
N
N
Y

-------
EPl
Beg
ODD
(
i











































1
ion State
W DDD0
1 NC
1 NC
NC
NC
NC
HC
NC
NC
NC
1 NC
1 NC
1 NC
1 NC
1 SC
SC
SC
SC
SC
SC
SC
SC
SC
SC
SC
GA
GA
GA
GA
GA
GA
GA
GA
GA
GA
GA
PL
PL
PL
PL
PL
PL
PL
PL
PL
PL

River
mmmmsommm
Blackwater River
Kirbys Creek
Neuse River
Tar River
Beaver Creek
Little Chinquapin Brook
Little Chinquapin Brook
Swift Creek
Black River
KB Cape Fear River
Angola Creek
Lyon Swaip Canal
Cape Pear River
Vaccanaw River
Pee Dee River
Black River Swaap
Pudding Swaip
Santee River
Bdisto River
Lenon Creek River
Salkehatchie River
Pour Bole Swaip
Cattle Creek
Coosawatchie River
Savannah River
Walthour Swaip
Little Ogeechee River
Canoochee River
Canoochee Creek
Taylors Creek
Black Creek
Ogeechee River
Altanaha River
Satilla River
St. Marys River
Suwanee River
Kithlahoochee River
Alapaha River
Ochlockonee River
Swaip Creek
Attapulgus Creek
Aucilla River
Big Creek
Apalachicola River
Chipola Creek
NATIONAL COASTAL POLLUTANT DISCHARGE INVENTORY
  livers and Streais Entering Coastal Counties
             Long ten
              flow at
             coastal cty
              boundary
               (cfs)
                                 Page  3

                                      River
                                    Discharges
NBI                                  Directly
                  804
                  134
                 4016
                 3205
                  137
                  168
                  112
                  238
                 1874
                  855
                  240
                  147
                 6222

                 1047
                16126
                  702
                   95
                18341
                 1330
                  137
                 1282
                  468
                   51
                  627

                12345
                   73
                  579
                  972
                   46
                   71
                  316
                 2833
                15402
                 2638
                 1523

                 1097
                 1680
                 1050
                 1035
                   57
                   49
                  499
                  201
                22570
              NA
!n
IPDI
1DDD
N
N
Y
Y
N
N
N
N
Y
N
N
N
Y
Y
Y
N
N
Y
Y
N
Y
N
N
N
Y
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Reach
Nuiber
mmmm
03010202001
03010204028
03020202011
03020103001
03020204016
03020204019
03020204018
03020202005
03030006005
03030007007
03030007005
03010006029
03010005027
01040206008
03040201054
03040205007
03040205006
03050112006
03050205018
01050207014
03050208006
03050206001
01050205017
03050208015
01060109005
03060109008
03060204007
01060201002
010(0203016
01060201017
01060202026
03060202002
03070106007
03070201005
03070204005
03110201
03110203
03110202
03120003
03120003
03120003
03110103
03110012
03110011
01110012
Estuary
Code
mm
201
201
202
202a
202b
202b
202b
202b
205
205
205
205
205
206
206
206
206
208
209
209
209
209
209
210
211
211
212
212
212
212
212
212
214
215
215
304
304
304
105
105
305
105
106
106
306
to
Estuary Naoe I
mmmmmmmmmmm i
Albeiarle Sound
Albeiarle Sound
Pailico Sound
Pailico and Pungo Rivers
Neuse River
Neuse River
Neuse River
Neuse River
Cape Pear River
Cape Pear River
Cape Pear River
Cape Pear Biver
Cape Pear River
Winyah Bay
Vinyah Bay
Win yah Bay
Vinyah Bay
North and South Santee Rivers
St. Helena Sound
St. Helena Sound
St. Helena Sound
St. Helena Sound
St. Helena Sound
Broad River
Savannah River
Savannah River
Ossabaw Sound
Ossabav Sound
Ossabaw Sound
Ossabaw Sound
Ossabaw Sound
Ossabaw Sound
Altaiaha River
St. Andrew / St. Siions Sound
St. Andrew / St. Siions Sound
Suwanee River
Sunanee River
Suwanee River
Apalachee Bay
Apalachee Bay
Apalachee Bay
Apalachee Bay
Apalachicola Bay
Apalachicola Bay
Apalachicola Bay
Ei
[Yi
m
N
N
Y
N
N
H
N
N
N
N
N
N
Y
Y
Y
N
N
7
Y
N
N
N
N
N
Y
N
Y
N
N
N
N
Y
Y
Y
Y
Y
N
N
Y
N
N
Y
N
Y
N

-------
NATIONAL COASTAL POLLUTANT DISCHARGE  INVENTORY
  Rivers and Streans Entering  Coastal  Counties
EPA
Region
DDDDDD













4
4








6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6

State
DDDD
PL
PL
PL
PL
PL
PL
PL
PL
PL
PL
PL
AL
AL
MS
HS
MS
HS
HS
HS
HS
HS
HS
HS
MS
LA
LA
LA
LA
LA
LA
LA
LA
LA
LA
LA
Li
LA
LA
LA
LA
LA
LA
LA

River
DDDDDDDDDDDDDDDDDDD
Cowerts Creek
Choctawhatchee River
Wrights Creek
Escanbia River
Yellow River
Sweetwater Creek
Canoe Creek
Pond Creek
Perdido River
Brushy Creek
Ward Creek
Toabigbee River
Alabaia River
Jourdan River
Wolf River
Little Biloxi
Big Cedar Creek
Bilozi River
Black Creek
Red Creek
Crane Creek
Pascagoula River
Escatawapa River
Pearl River
Boque Chitto
Tangipahoa River
Hog Branch
Sandy Creek
Coiite River
White Bayou
Redwood Creek
Aaite River
Tickfaw River
Bayou des daises
Mississippi River
Atchafalaya River
Bayou Grosse Tete
Vernilion River
Bayou Teche
Hickory Branch
Clear Creek
Beckwith Creek
Indian Bayou
             Long ten
              flow at
             coastal cty
              boundary
               (cfi)
              DDD0DDDD

                  258
                 (333
                    S
                 6381
                 118?
                   35
              HA
                  769
                  108
                30770
                40876

                   24
                  736
                   57
                  141
                  192
                 1609
                  885
                   63
                 1414
                 9768

                 1941
                 1142
                   59
                  125
                  232
                   86
                   85
                  907
                  372
                  435
               537000
               256800
                  295
                  157
                  830
                   53
                   90
                  199
                   18
In
NCPDI
DDDDD
!
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Reach
Nuibei
DDDDDDDDI
03130012
03140203
03140203
03140305
03140103
03140104
03140305
03140103
03140106
03140106
03120001
03160204
03160204
03170009
03170009
03170009
03170006
03170009
03170007
03170007
03170009
03170006
03170009
03180005
03130005
08070205
08070203
08070202
08070202
08070202
08070202
08070202
08070203
08080102
08070100
08080101
08070300
08080103
08080102
08080205
08080203
08080205
08080205
                                   Page   4

                                        River
                                      Discharges
  NET                                 Directly
Estuary                               to Estuary
 Code          Estuary Nane              (T/N)
 DDDDD  DDDDDDDDDDDDDDDDDDDDDDDDDMDDD  mom
 306    Apalachicola Bay
 308    Choctawhatchee  Bay
 308    Choctawhatchee  Bay
 309    Pensacola Bay
 309    Pensacola Bay
 309    Pensacola Bay
 309    Pensacola Bay
 309    Pensacola Bay
 310    Perdido Bay
 310    Perdido Bay
 999    Does not enter  NEI  estuary

 311    Mobile Bay
 311    Mobile Bay

 31Z    Hississippi Sound
 312    Mississippi Sound
 312    Hississippi Sound
 312    Mississippi Sound
 312    Mississippi Sound
 312    Hississippi Sound
 312    Hississippi Sound
 312    Hississippi Sound
 312    Hississippi Sound
 312    Hississippi Sound
 312a   Lake  Borgne

 312a   Lake  Borgne
 312b   Lake Pontchartrain
 312b   Lake Pontchartrain
 312b   Lake Pontchartrain
 312b   Lake Pontchartrain
 312b   Lake Pontchartrain
 312b   Lake Pontchartraio
 312b   Lake Pontchartrain
 312b   Lake Pontchartrain
 313    Hississippi Delta Region
 313    Hississippi Delta Region
 313    Mississippi Delta Region
 314    Atchafalaya and Vermlion Bays
 314    Atchafalaya and Vernihon Bays
 314    Atchafalaya and Vernilion Bays
 315    Cslcasieu Lake
 315    Calcasieu Lake
 315    Calcasieu Lake
 315    Calcasieu Lake

-------
NATIONAL COASTAL POLLUTANT DISCHARGE INVENTORY
  Rivers and  Stream  Entering Coastal Counties
             Long  ten
              flow at
             coastal cty
                                                                                Page   5
EPA
Region
mm
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
. 6
6
6
6
6
6
6
9
9
9
9
9
9
9
9
9
9

State
mo
LA
LA
Li
LA
LA
LA
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
TI
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA

Siver
mmmmmmmum
Calcasieu Biver
Bear Head Creek
Bayou Plaqueiine Brule
Bayou Mallet
Bayou des Cannes
Bayou Nezpique
Heches Biver
Sabine River
Cow Bayou
Village Creek
Bast Fork San Jacinto
Caney Creek
Spring Creek
West Fork San Jacinto
Trinity Biver
Peach Creek
Pine Island Bayou
Brazos River
San Bernard Biver
Lavaca River
Sandy Creek
Navidad River
Colorado Biver
Coleto Creek
Guadalupe River
San Antonio Biver
Blanco Creek
Aransas River
Hedio Creek
Nueces River
Rio Grande River
North Ploodway
Arroyo Colorado River
San Fernando Creek
Los Olios Creek
Santa Ana Siver
UT of San Gabriel River
UT of Lewis Creek
Chalone Creek
Topo Creek
Pacheco Creek
UT of Cuyaaa River
San Benito River
Hospital Creek
Hunting Creek
boundarj
(Cfl)
DDDDD0DI
2581
236
110
96
268
825
5379
7743
102
839
226
75
219
619
7528
53
472
6660
500
(8
209
159
2931
95
2104
666
15
45
22
849
2047
309
318
29
5
3
NA
NA
0
0
60
NA
32
NA
18
In
NCPDI
DDDDD
Y
Y
Y
Y
!
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y






Y
Y
Y
N
Y
Y
Y
N
N
Y
N
N
Reach
Nuiber
DDDDDmODDO
08080206
08080205
08080201
08080201
08080201
08080201
12020003
12010005
12010005
12020007
12040103
12070104
12040101
12040101
12030203
12040103
12020007
12070104
12090401
12100101
12100102
12100102
12090302
12100204
12100204
12100303
12100406
12100407
12100406
12110111
12110208
12110208
12110208
12110204
12110205
18070203005
18070106
18060005
18060005073
18060005072
18060002018
18060007
18060002004
18040014
18020117013
Estuary
Code
mat)
315
315
999
999
999
999
316
316
316
116
317
317
317
317
317
317
317
318
318
319
319
319
319
320
320
320
321
321
321
322
323
323
323
!23a
323a
402
402
404
404
404
404
404
404
405
405a
                                                            Estuary Kane
                                                     Calcasieu Lake
                                                     Calcasieu Lake
                                                     Does not enter NEI estuary
                                                     Does not enter NEI estuary
                                                     Does not enter NEI estuary
                                                     Does not enter NEI estuary

                                                     Sabine Lake
                                                     Sabine Lake
                                                     Sabine Lake
                                                     Sabine Lake
                                                     Galveston Bay
                                                     Galveston Bay
                                                     Galveston Bay
                                                     Galveston Bay
                                                     Galveston Bay
                                                     Galveston Bay
                                                     Galveston Bay
                                                     Brazos River
                                                     Brazos Biver
                                                     Katagorda Bay
                                                     Hatagorda Bay
                                                     Katagorda Bay
                                                     Hatagorda Bay
                                                     San Antonio Bay
                                                     San Antonio Bay
                                                     San Antonio Bay
                                                     Aransas Bay
                                                     Aransas Bay
                                                     Aransas Bay
                                                     Corpus Cbristi Bay
                                                     Laguna Hadre
                                                     Laguna Hadre
                                                     Laguna Hadre
                                                     Baffin Bay
                                                     Baffin Bay
                                                     San Pedro Bay
                                                     San Pedro Bay
                                                     Honterey Bay
                                                     Honterey Bay
                                                     Honterey Bay
                                                     Honterey Bay
                                                     Honterey Bay
                                                     Honterey Bay
                                                     San Francisco Bay
                                                     Suisun Bay
  River
Discharges
 Directly
to Estuary
  (Y/N)
  mom

   Y
   N
   N
   N
   N
   N

   T
   T
   T
   Y
   N
   N
   N
   N
   Y
   Y
   N
   7
   Y
   T
   N
   Y
   Y
   N
   T
   Y
   N
   Y
   N
   Y
   Y
   Y
   Y
   Y
   Y

-------
BPi
Region
mm
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10

State
D000
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
OR
OR
OR
OR
OR
            NATIONAL COASTAL POLLUTANT DISCHARGE INVENTORY
              Rivers and Streaas Entering Coastal Counties
                         Long ten
                          flow at
                         coastal cty
                          boundary
         River             (cfs)
 0D0000000000000000D0000  00000000

Colusa Basin Canal        NA
Hodesto Main Canal             15
Butts Creek               NA
Duck Creek                     II
Littlejohn Creek               51
Lone Tree Creek           HA
North Fork, Duck Creek         47
Stanislaus River              756
San Joaquin River            4403
Cosuanes River                482
Dry Creek II                  407
Willow Creek              NA
Dry Creek 12                  147
Mokelunne River               612
Calaveras River               229
Anerican River               3943
Putah Creek                   229
Cache Creek                  1225
Coon Creek                    505
Feather River                8054
Sacranento River            10701
Deer Creek                NA
Bali of Gilead Creek          658
North Fork, Eel River         697
Eel River                     450
Cold Creek                    100
Black Butte River             104
Van Duzen River               393
UT of Bain of Gilead      NA
UT of Eel River                98
Canp Creek                    268
Saloon River                 1809
Klanath River                6273
South Fork, Trinity          1553
Trinity River                2837
DeluE Creek               NA
UT of Deluz Creek         NA
Santa Margarita River          24
Nad River                     594
San Juan Creek            NA
San Kateo Canyon River         14
Cow Creek                      14
Coluibia River             195526
DT of Bull Run River          1(6
Bull Run River                153
Eagle Creek                    51
                                                                                                   6
                                      River
                                    Discharges
NEI                                  Directly
                                    to Estuary
                                      (Y/N)
                                   0  0000000
n
IPDI
1000
N
N
N
N
N
N
N
N
Y
Y
Y
N
N
Y
Y
Y
N
Y
N
N
Y
N
N
N
Y
N
N
Y
N
N
N
N
Y
N
Y
N
N
Y
Y
N
Y
N
Y
N
N
N
Reach
Nuaber
000000000000
18020104001
18040002015
18020117
18040002006
18040002005
18040002
18040002007
18040002016
18040002009
18040013001
18020111003
18040013
18040005007
18040005002
18040004002
18020111002
18020111014
18020109
18020109007
18020106001
18020104001
18040013
18010104012
18010105011
18010103007
18010104011
18010104010
18010105020
18010104
18010105015
18010209030
18010210001
18010209013
18010212005
18010211009
18070302
18070302
18070302002
18010102015
18070301010
18070301006
17100302058
17070105001
17080001036
17080001037
17070105005
Estuary
Code
00D00
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
405a
406
406
406
406
406
406
406
406
408
408
408
408
408
999
999
999
999
999
999
410
411
411
411
411

Estuary Naie
000000000000000000000000001
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun B&y
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Suisun Bay
Eel River
Eel River
Bel River
Eel River
Bel River
Eel River
Bel Siver
Eel River
Rlaaath River
Klaoath River
Rlaaath River
Shaath River
Rlaaath River
Does not enter NBI estuary
Does not enter NBI estuary
Does not enter NEI estuary
Does not enter NBI estuary
Does not enter NEI estuary
Does not enter NBI estuary
Winchester Bay
Coluabia River
Coluabia River
Coluabia River
Coluibia River

-------
                         NATIONAL COASTAL POLLUTANT DISCHARGE INVBNTOBT
                           Rivers and Streais Entering Coastal Counties
                                                                                                          Page   7
EPA
Region
MM
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

State
DDDD
OB
OR
OR
OR
OR
OR
OR
OR
08
OR
OR
OR
OR
OR
OR
OR
OR
OR
VA
HA
NA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
HA
                      River
             Sandy Elver
             Villaaette River
             UT of Villaiette River
             Silver Creek
             Illinois River
             Kelsey Creek
             Bast Fork, Indigo Creek
             Rogue River
             Lobster Creek
             Alsea River
             Yaquina River
             Big Rock Creek
             Siletz River
             Wilson River
             Morth Fork, Trask River
             Nehalea River
             Pedee Creek
             Nestucca River

             Cowlitz River
             Coldwater Creek
             North Fork.Toutle River
             Castle Creek
             Lewis River
             Siouzon Creek
             Canyon Creek
             UT of Canyon Creek
             East Pork, Lewis River
             Copper Creek
             Hashougal River
             UT of Cowlitz River
             Green River
             Lewis River
             Devils Creek
             Blk Creek
             UT of Green River
             East Fork, Grays River
             Fall River
             Chekalis River
             Skookiuchuck River
             UT of Chehalis River
             Catt 4 Big Creek
             Hineral Creek
             Deschutes River
             Little Nisqually
             Nisqually River
Long tera
flow at
coastal cty
boundary
(cfi)
DUDDDDDD
2406
35587
NA
517
2726
31
168
5674
318
901
257
NA
1031
285
486
270
50
704
6834
103
90
85
2958
340
267
132
430
256
927
201
204
2958
89
NA
44
342
253
2877
414
89
102
387
52
118
1711




River
Discharges

In
NCPDI
mDD
Y
Y
N
N
Y
N
N
Y
N
Y
N
N
Y
N
N
N
N
N
Y
Y
Y
N
Y
N
N
N
Y
N
N
N
Y
Y
N
N
N
N
N
Y
N
N
N
N
Y
N
Y

Reach
Nuaber
DDDDDDDDDDDD
17080001016
17090012020
17090012
17100311056
17100311007
17100310057
17100311063
17100310011
17100205037
171002050(0
17100204003
17100204
17100204009
17100203021
17100203015
17100202033
17100202038
17100203006
17080005035
17080005028
17080005026
17080005024
17080002025
17080002023
17080002017
17080002016
17080002005
17080002004
17080001051
17080005072
17080005032
17080002025
17080005033
17080005
17080005031
17080006050
17100106046
17100103013
17100103048
17100103008
17110015020
17110015015
17110016002
17110015012
17110015
NBI
Estuary
Code
mw
411
411
411
417
417
417
417
417
419
419
420
421
421
423
423
424
424
425
411
411
411
411
411
411
411
411
411
411
411
411
411
411
411
411
411
411
412
413
413
413
414
414
414
414
414

Directly
to Estuary
Estuary Naie
mvmmmmmmmmm
Coluabia River
Coluibia River
Coluibia River
Rogue River
Rogue River
Rogue River
Rogue River
Rogue River
Alesa Bay
Alesa Bay
Yaquina Bay
Siletz Bay
Siletz Bay
Tillaaook Bay
Tillaaook Bay
Nehalen Bay
Nehalei Bay
Nestucca Bay<
Coluabia River
Coluabia River
Coluabia River
Coluibia River
Coluabia River
Coluibia River
Coluibia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluabia River
Coluibia River
Hillapa Bay
Grays Harbor
Grays Harbor
Grays Harbor
Puget Sound
Puget Sound
Puget Sound
Puget Sound
Puget Sound
(Y/N)
DDDDDDD
N
N
N
N
N
N
N
Y
N
Y
Y
N
Y
N
N
Y
N
Y
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Y
N
N
Y
N
Y
Y
Y
•><:'. J.i

-------
Rivers and Streams Entering  Coastal Counties
                                               Juniper Creek
                                           Buffalo Stream iy

          Sheepscot River
           Eastern River
        Kennebec River
          Androscoggin River
        Crooked River
                                                   Maine
                                                   Rivers and streams shown in bold
                                                   are presently included in the NCPDI

                                                       Coastal County
         Ossipee River
         Saco River
20     40     60
 I   '   '   -I	1
  Miles

-------
River and Streams Entering Coastal Counties
 New Hampshire

 Rivers and streams shown in bold
 are presently included in the NCPDI
 :j:j:|:j: Coastal County
 0   10   20   30
  i  i  i  i  i  i   i
       Miles

-------
Rivers and Streams Entering Coastal Counties
 Massachusetts

 Rivers and streams shown in bold
 are presently included in the NCPDI
    Coastal County
 0    10   20   30
 I  I   I  I  I   I  I
       Miles
                                Merriuck River
                                    Nashua River
                                  Assabet River

-------
Rivers and Streams Entering Coastal Counties
                                                    Blackstone River

                                                    Mill River
 Rhode Island
 Rivers and streams shown in bold
 are presently included in the NCPDI
     Coastal County
            10
           Miles
15
20

-------
Rivers and Streams Entering Coastal Counties
     Pomperaug River

       Shepaug River

  Housatonic River
                                                         Qvinebaug River

                                                                Little River
              Shetucket River
Connecticut River
                                                                         Connecticut
                                                                          Rivers and streams shown in bold

                                                                          are presently included in the NCPDI
                                                                          :$:§! Coastal County
                                                                         0   5   10   15  20  25
                                                                          i    I    I   I    i  —i
                                                                                  Miles

-------
Rivers and Streams Entering Coastal Counties
                                                               Little White Creek
                                                                   Anthony Kill
                                                                Hudson River
                                                                 Mohawk River
                                                                  Normans Kill
WaHoomsac River
Hoosic River
Owl Kill
                                                      Sandburg Creek
 New York
 Rivers and streams shown in bold
 are presently included in the NCPDI
     Coastal County
     20   40   60   80   100
           Miles

-------
Rivers and Streams Entering Coastal Counties
 New Jersey
 Rivers and streams shown in bold
 are presently included in the NCPDI
    Coastal County
     10
 20
=±=
                30
               =d
                                  Green Brook


                                  Rarrtan River
       Miles

-------
Rivers and Streams Entering Coastal Counties
                                                                              Delaware River
                                                                         Penneypack Creek
                                                                        Wissahickon Creek
                                                                         Schuylkill River
                                                                             Darby Creek
                                                                           Chester Creek
                                                                              Crum Creek
                                                                             Ridley Creek
 Pennsylvania
 Rivers and streams shown in bold
 are presently included in the NCPDI

     Coastal County

      20
   rfc
 40
=1
     Miles

-------
Rivers and Streams Entering Coastal Counties
                   Brandywine Creek
                    Red Clay Creek
                   White Clay Creek
 Delaware
 Rivers and streams shown in bold
 are presently included in the NCPDI
     Coastal County
         10
          I
        Miles
15
 20
=1

-------
Rivers and Streams Entering Coastal Counties
                                                               Deer Creek
                                             Patapsco River


                                               Little Patuxent River
                                             Middle Patuxent River
                                                    Patuxent River
                               NE Branch Anacostia River
                                     NU/ Branch Anacostia River
                                            Potoaac River
                                                Rock Creek
 Maryland and the
 District of Columbia
 Rivers and streams shown in bold
 are presently included in the NCPDI

     Coastal County
     10   20   30   40   50
          Miles
Susquehanna River
Conowinqo Creek
Octoraro Creek
Elk Creek

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Rivers and Streams Entering Coastal Counties
                                                                     Broad Run
                                                                     Kettle Run
                                                                     Cedar Run
                                                           	 Rappahannock River
                                                                    Terrvs Run
                                                         Tributary North Anna River
                                                                 Patnunkey Creek
                                                               Paaunkey River
                                                        Chickahominy River
                                                          Tuckahoe Creek
                                                           Janes River
 Virginia
 Rivers and streams shown in bold
 are presently included in the NCPDI

     Coastal County
     20
  b
 40
=t=
60
80  100
 i    i
           Miles

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Rivers and  Streams Entering Coastal Counties
                                                                       Blackwater River
                                                                      Nottoway River
                                                                      Meherrin River
                                                                           Wrbvs Creek
                                                                         Potecasi Creek
                                                                       Roanoke River
                                                                            Tar River
                                                                            Swift Creek
                                                                         Neuse River
                                                            Beaver Creek
                                                    Little Chinquapin Brook (1)
                                                   Little Chinquapin Brook (2)
                                                            Angola Creek
                                                       NE Cape Fear River
                                                   Lyon Swamp Canal

                                                       Cape Fear River
 North Carolina

 Rivers and streams shown in bold
 are presently included in the NCPDI
     Coastal County

     20   40   60    80   100

           Miles

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Rivers and Streams  Entering Coastal Counties
                                                          Waccaaa* River
                                                    Pee Dee River
                                                    Pudding Swamp

                                                Black River Swamp
                                               Santee River

                                            Four Hole Swamp
                                           Cattle Creek
                                        Edisto River
                                   Lemon Creek River
                                    Salkehatchie
                                          River
                          Coosawatchie River
South Carolina
Rivers and streams shown In bold
are presently included in the NCPDI
    Coastal County
       20
40
80
         Miles

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Rivers and Streams Entering Coastal Counties
                                         Savannah River
                                           Walthour Swamp
                                       Little Ogeechee River
                                         Ogeechee River
                                              Black Creek
                                          Canoochee River
                                          Canoochee Creek
                                            Taylors Creek
                                         Attaaaha River
                                            Satilla River
                                         St. Marys River
 Rivers and streams shown in bold
 are presently included in the NCPDI

     Coastal County
       20
60
80
            Miles

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Rivers and Streams Entering Coastal Counties
                 1. Suwanee  River
                 2. Alapaha River
                 3. Wlthlahoochee  River
                 4. Aucllla River
                 5. Ward  Creeek
                 6. Ochlockonee River
                 7. Swamp Creek
                 8. Attapulgus  Creek
                 9. Apalachlcola River
                 10. Cowerts  Creek
                 11. Chlpola  Creek
12. Big  Creek
11 Wrights  Creek
14. Choctawhatchee River
15. Pond  Creek
1& Yellow  River
17. Blackwater  River
1ft Sweetwater  River
19. Escambla River
20. Canoe  Creek
21. Brushy  Creek
22. Perdldo  River
                                                          ©
  Florida
  Rivers and streams shown in bold
  are presently included in the NCPDI
      Coastal County
 0   20 40  60  80 100
  I    I   I    I   -I	1
         Miles

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Rivers and Streams Entering Coastal Counties
                    -Toabigbee River

                    • Alabama River
                                             Alabama
                                             Rivers and streams shown in bold
                                             are presently included in the NCPDI
                                                Coastal County

                                                 20     40
                                                 Miles

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Rivers and Streams Entering Coastal Counties
                        Escartawpa River
                        Big Cedar Creek
                       Pascagoula River
                           Black Creek
                             Red Creek
                            Biloii River
                        Lrttle Biloii River
                             Wolf River
                           Crane Creek
                          Jourdan River
                            Pearl River
Mississippi
Rivers and streams shown in bold
are presently included in the NCPDI
    Coastal County
      20
40
 b
 60
=1
       Miles


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Rivers and Streams Entering Coastal Counties
   1. Boque  Chltto  River
   2. Tanglpahoa River
   3. Tlckfaw River
   4. Hog  Branch  River
   5. Amlte  River
   6. Sandy  Creek
   7. Comlte River
   8. Redwood  Creek
   9. White Bayou
             10.  Mississippi  River
             11.  Bayou Grosse  Tete
             12  Atchafalaya  River
             11  Bayou des Glalses
             14.  Bayou Teche
             15.  Vermllllon  River
             16.  Bayou Plaquemlne Brule
             17.  Bayou  Mallet
             1&  Bayou des Cannes
                                       19. Bayou  Nezplque
                                       20. Calcasleu  River
                                       21. Clear  Creek
                                       22. Indian Bayou
                                       23. Hickory  Branch River
                                       24. Beckwlth Creek
                                       25. Bear Head  Creek
 Louisiana
 Rivers and streams shown in bold
 are presently included in the NCPDI
     Coastal County
      20
       I
40
60
80
 I
 100
	I
              Miles

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Rivers and  Streams  Entering Coastal Counties
 Texas
                                                        Sabln« River
                                                        Cow Bayou
                                                        Nsches River
                                                        Village Creek
                                                        Pine Island Bayou
                                                     6.  Trinity River
                                                     7  East Fork San Jaclnlo
                                                     8  Peach Creek
                                                        Caney Creek
9
11  Spring Creek
12. Brazos River
13. San Bernard River
14  Colorado River
15. Navadad River
16. Sandy Creek
17  Lavaca River
18. Gaudalupe  River
19  Coleto Creek
20  San Antonio River
21  Blanco Creek
22  Medlo Creek
23. Araneee  River
24. Nuece* River
25. San Fernando Creek
26. Los Olmot Creek
27. North Floodway
28. Arroyo Colorado River
29. Rio Grande River
\
 Rivers and streams shown in bold
 are presently included in the NCPDI
        Coastal County


         50      100      150
                Miles
                                200
                               	I

-------
Rivers  and  Streams  Entering  Coastal  Counties
                       Camp Cree*

                        Klamath River
                        Trinity River
                        SF Trinity River
                        Mad River
                        Van Dunn Rlvtr
                        UT of Eel River
                        North ForkEwRrver

                        Balm of Gtead CrMk

                        UT B»Jm ol Gtoaxl Cree*
                         CoM CrMk
                         Black Bun* fliwr
                         E»i River
                         — Hjnlmo Craek
                         - Pi^ah Cr««k
                           Bant Creak
                                      Cich* CrM
                                      Colusa Basin Canal
                                      Sacramento River
                                      Fsathar ACoo^ C'aek!
                                           Dry CrMk (i:
                                           American Rivet
                                             Coiumrwa River
                                             Willow Creek
                                             Dry Creek (2)
                                             Uokelumne River
                                             Calaveria River
                                              orth EorX Duck River
                                                tonn
                                             Lone Tree Creek
                                             Stanislaus Rrver
                                             Modesto Main Canal
                                             San Joaquin River
                                          Pacheco Creek
                                          San Benlto Rivei
                                          Chalone  Creek
                                          Topo Creek
                                              North Fork Lewia CrMk
                                                                                    UT ol San QatxM River
                                                                                    tent* Ana River
                                                                                       San Juan Creek
                                                                                       San  Make Canyon River
 California
 Rivers and streams shown in bold
 are presently included in the NCPDI
  H  Coastal County
           so         100

 b
                    Miles

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Rivers and Streams Entering Coastal Counties
  Oregon
                                             Columbia River
                                             Eagle Creek
                                             UT Bull Run River
                                             Bull Run River
                                             Sandy River
                                             UTWIIIiamette River
                                             Villamette River
                                             Nehalem River
                                             Pedee Creek
                                             Wilson River
                                             NF Trask River
                                             Nestucca River
                                             Siletz River
                                             Big Rock Creek
                                             Yaquina River
                                             Alsea River
                                             Lobster Creek
                                             Cow Creek
                                             Kelsey Creek
                                             Rogue River
                                             EF Indigo Creek
                                             Silver Creek
                                             Illinois River
                                     Coastal County
Rivers and steams shown in bold
are presently included in the NCPDI
                                    25
 50
Miles
75
100

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Rivers and Streams Entering Coastal Counties
                                                   Can yon Creek
                                                   UT Canyon Creek
    Fall River
UT Chahalis River
  EF Grays River
   UT Cowlitz River
Cowlitz River
                                                                       Nisqually  River8c Tributaries
                                                                       (Little Nisqually River & Big, Catt & Mineral Creeks
                                                                       Deschules River
                                                                       Skookumchuck River
                                                                       Chehalis River
                                                                    Elk Creek
                                                                    Green River
                                                                    UT Green River
                                                                    Coldwater Creek
                                                                    North Fork Toutle River
                                                                    Castle Creek
                                                                    Lewis River
                                                                                                               \
                                                                                            Washington
                                                   East Fork Lewis River
                   Washougal River
                     Copper Creek
                                                                                        Rivers and steams shown in bold
                                                                                        are presently included in the NCPDI
                                                                                             Coastal County
                                                                                               25     50     75     100
                                                                                                         Miles

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OFFSHORE BOUNDARIES

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Offshore Boundaries

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                             Offshore Boundaries
The maps of offshore political, maritime and jurisdictional boundaries presented in this
section are taken from NOAA's Strategic Assessment Data Atlas Series. They are organized
in East/West geographic order from the  Northeast through the Gulf of Mexico and up the
West  Coast to Alaska.  These boundaries must  be considered when defining offshore
analysis areas. The paper which  follows the maps presents an early attempt at defining
boundaries of offshore coastal areas that are affected by land based sources of pollution.
Identifying  these areas  accurately is an  important  step  towards defining offshore
analysis  areas.   This analysis  was originally  presented  at the  Coastal Zone 1980
conference (Coastal Zone '80. Proceedings of the Second Symposium on Coastal and Ocean
Management. Vol. IV).

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Eastern United States Coastal and Ocean Zones
Council on Environmental Quality and Office of Coastal Zone Management, NOAA
                                                   • \. V- J
                                                    y/
Political  Boundaries
  | National
-. State

 County

 3-Mile Limit (Territorial Zone)
  -1 12-Mile Limit (Contiguous Zone)

  1 50-Mile Limit (Prohibited Zone
  '   -
__
                          or Pollution Zone)

                         j 200-Mile Limit
                        J (Fishery Conservation Zone)
                       (D
   New England Regional
   Fishery Management Council
f) Mid-Atlantic Regional
 '_] Fishery Management Council

3  South Atlantic Regional
  Fishery Management Council

 4,j Gulf of Mexico Regional
 /J Fishery Management Council

  I Fishery Management Council
  i Boundary

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Eastern United States Coastal and Ocean Zones
Council on Environmental Quality and Office of Coastal Zone Management, NOAA
Political  Boundaries
National


State


County


3-Mile Limit (Territorial Zone)
                          12-Mile Limit (Contiguous Zone)

                          50-Mile Limit (Prohibited Zone
                          or Pollution Zone)

                          200-Mile Limit
                          (Fishery Conservation Zone)

                        •j\\ New England Region.il
                         ' Fishery Management Council
\f'fjf\] Mid-Atlantic Regional
   I Fishery Management Council

 f 1 South Atlantic Regional
 t/j Fishery Management Council

   Gulf of Mexico Regional
   Fishery Management Council

   Fishery Management Council
   Boundary

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 Eastern United States Coastal and  Ocean Zones
 Council on Environmental Quality and Office of Coastal Zone Management, NOAA
Political Boundaries
  ' National
   State


   County


   3-Mile Limit (Territorial Zone)
                          12-Mile Limit (Contiguous Zone)
  j 50-Mile Limit (Prohibited Zone
  j or Pollution Zone)

   200-Mile Limit
   (Fishery Conservation Zone)

• u'-xl New England Regional
vL/| Fishery Management Council
                          Mid-Atlantic Regional
                         '] Fishery Management Council
                         31 South Atlantic Regional
                         /J Fishery Management Council
B
4
Gulf of Mexico Regional
Fishery Management Council

Fishery Management Council
Boundary

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Eastern United States Coastal and Ocean Zones
Council on Environmental Quality and Office of Coastal Zone Management, NOAA
 Political  Boundaries
    National


    State


    County


    3-Mile Limit (Territorial Zone)
12-Mile Limit (Contiguous Zone)

50-Mile Limit (Prohibited Zone
or Pollution Zone)

200-Mile Limit
(Fishery Conservation Zone)

New England Regional
Fishery Management Council
3
Mid-Atlantic Regional
Fishery Management Council

South Atlantic Regional
Fishery Management Council

Gulf of Mexico Regional
Fishery Management Council

Fishery Management Council
Boundary

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  Political    Boundaries
  and   Maritime    Zones:
  Gulf   of   Mexico
 Description
 Po'.'ical boundaries shown on ihis map de'me seiecied lunsdicuons o! ine Gui1 oi Me-ico Tnese u'lsdc^ons ane
 tnei> importance include
 Teintonal Sea Coastal waters emending Irom a coastal baseline seaward wunm wn.cn a nation eieroses
 sovereignly but eannoi deny me right ol mnoceni passage Id loie.gn nations Me.'CO claims a 12 nautical mile
 n-roi leintoriai sea while me USA claims a ihree nmi lerntonai sea In the USA  me Submerged Land Ac) ol '953
 established the territorial sea lor Teias and Florida s Gull ol Menco coasi as three leagues (about nine nmi) and
 •or Alabama MistissiDO'  and Louisiana as three mi This difference exists because me US Congress recognized
 me seaward claims ol mose slates at me time ol ihe« admiss-on 10 ine Union Claims oi Florida ~»re established .n
 a new slate constitution upon reentry lo me Union alter the Civ.l War Claims ol Te»as were established *hen ,•
 •as an independent republic between 1632 and 18*5
 Contiguous Zone A band ol nigh seas emending 12 nmi Irom me baseline ol me territorial sea establisned
 pursuant to the 1958 Geneva Convention on me Territorial Sea and Contiguous Zone Within us contiguous zone a
 nation can eiercise me control necessary lo prevent infringement ol its customs Irscal immigration or
 environmental regulations The USA claims a 12 nmi contiguous rone Menco claims no connguous zone
 (Stevens pers comm)
 Prohibited Oil Pollution Zone A band ol high seas and coastal waters 50 nmi Irom the nevesi lano arc.n
 esubiistird tiv the 1973 international Convention loi me Prevention ol Pollution nom Snips iMARPOU Bo:n
 Me.ico and me USA nave signed me Convention Oil tankers are prohibited Irom discharging o.i wnn.n me zone
 (see Map 5 23) e.cepi under certain conditions specified m me MARPOL regulations Ships other man lanters ana
 greater man 400 gross tons generally are restricted Irom discharging oil within 12 nmi ol me nearest land
 Eicluiive Economic Zone The E»dusive Economic Zone IEEZ) enends 200 nmi Irom -he baseline ol me
 territorial sea Where the eneni ol me EEZ s ol nations overlap boundaries are determined on me basis ol
 equitable principles The USA proclaimed its EEZ on March 10 1983 Consistent with international law withmns
 EEZ me USA claims (a) sovereign ngnis tor me purpose ote»piormg e»piomng conserving and managing
 natural resources bom living and nonliving ol me seabed and subsoil and me superadiaceni waters and »ri
 regard to other activities tor me economic eipiouauon and eiploranon ol me zone such as me production ol
 energy Irom water currents and winds and lb| jurisdiction with regard lo the establishment and use o' ar.liciai
 •stands and installation and structures having economic purposes and me protection and preservation ol me
 marine environment This zone coincides with me US Fishery Conservation Zone where me USA claims exclusive
 ngnis to manage lisnery resources encepl lor highly migratory species (Feoeisl Register March M  19831 Menco
 claims similar ngnis and jurisdiction over its EEZ
 A 1976 maritime bounaaiy agreement between me USA and Me.ico established a snareo mar.-ime bounnart ,n
 me Gun ol Me«ico II provides thai neither country shall claim or e.erc.se sovereign ngnis or jurisdiction over me
 maters 0' seabed and subsoil on tne omei country s voe oi me maritime boundary The agreement nas «oi vei
 ente-eo into force iSmith  oers comm )
            International Boundary


            State Boundary

            County Boundary (Municipal Districts
            in Mexico)

            3 Nautical Mile / 3 League Limit (Territorial
            Zone)

            12 Nautical Mile Limit (Contiguous Zone)

            50 Nautical Mile Limit (Prohibited Zone or
            Pollution Zone)

            200 Nautical Mile Limit (Exclusive Economic
            Zone)
Mexican jurisdictions! claims illustrated on this map do not imply official recognition of
those claims by the United Slates Government. Territorial Zone is 3 nautical mile offshore
limit in Alabama and Mississippi, 3 league limit in Florida and Texas and 12 nautical mile
limit in Mexico

-------
Political  Boundaries
and Maritime Zones:
Florida

-------
Political  Boundaries
and Maritime Zones:
Louisiana,  Mississippi,  Alabama
      ,

-------
Political  Boundaries
and Maritime Zones:
Texas    	  	
                             -
                          >
                          L "* - ^
                          .
                                '


-------
Federal    Agency
Regional    Boundaries:
Gulf    of    Mexico
Description
Rogional boundaries ol federal agencies ot the USA having mnrino resource management Ann* omuonrnpntni
quality responsibilities within iho Gull ol Mo«ico region are shown on this map

The Army Corps of Engineers is responsible lor iho maintenance and improvement ol inland waterways rivers and
harbors, pot development Hood control projects and all structures or work in or allectmg navigable wators and
established shipping saieiy (airways Under Section 404 ot ihe Clean Water Act it grants pcrmiis lor discharges ol
dredged or Ml material* mlo navigable waters at specified disposal sues within the 3 nmi territorial sea ol the USA
(Squires 1983)

Thp Minerals Management Service US Depanmpni nl me Interior manages the development ol the outer
continental shell IOCS) lor oil and gas oploraiion and production (Maps ' 24-2S) The National Park Service 01
ine US Department ol me interior is responsible tor ihe protection and management of designated lands such as
national seashores parks and recreation areas

The US Coast Guard is responsible lor ensuring the safe and unencumbered passage of marine traffic and
monitoring ihe discharge ol oil into navigable waters (Maps 5 23-26) As ihe principal maritime law enforcement
agency m waters subject to US jurisdiction n has the authority to make inspections searches seizures and
arrests at sea

The Environmental Protection Agency (EPA) is responsible for implementing federal environmental legislation such
as iho Clean Water Act (CWA) ihe Marine Protection Research and Sanctuaries Act (MPRSA) inclo>ic
Substances Control Act the Resource Conservation and Recovery Act and the Comprehensive Environmental
Response Compensation and Liability Act (CERCLA) For example undei Ihe CWA EPA provides grants 10
municipal and slate agencies to assist m financing ihe construction of municipal wastewater treatment facilities
EPA administers me National Pollutant Discharge Elimination System (NPDES) which incorporates and applies
eltiuent limitations m individual permits lor bom municipal and direct industrial dischargers and it conducts
monitoring to assure compliance win permit conditions or eliluent limns Under Title I ol me MPSRA EPA
designates recommended sites (Map 4  29| and limes tor ocean dumping and issues permits for the disposal of
municipal and industrial wastes EPA also provides under CERCLA two basic types ol hazardous substances
response capabilities an emergency response capability lor handling major chemical spills (m close cooperation
wiih me US Coast Guard and NOAA) and hazardous substance incidents and a remedial response capability lor
undertaking me long term cleanup ol abandoned hazardous vaste sites (Map i 20)
           National Parks Service Regions (NFS)

           Environmental Protection Agency
           Regions (EPA)

           US Coast Guard Districts (USCG)

           US Department of the Interior, Minerals
           Management Service Outer Continental Shelf
           Planning Areas (MMS OCS)
           US Army Corps of Engineers Civil Works
           Districts (COE)
	I  Gulf of Mexico Regional Fishery
           Management Council

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Federal  Agency
Regional  Boundaries:
Alabama,  Florida
    EPA Region IV
              NPS Southeast Region
                   -
                V-  \
                                        •  ~-\ '
                                         ' ' • ~  i \
                                           '
  USCG 8th District / USCG 7th District ( U

                     i
MMS OCS Eastern/Planning Area
                                     COE Jacksonville District
                                  \ \
                                   \v
                                             • » ?
                                    \ ••
                                    ', A •

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Federal Agency
Regional  Boundaries:
Louisiana, Mississippi
'.
                           ~T

            MMS OCS Central Planning Area
                          J

-------
Federal Agency
Regional  Boundaries:
Texas
                            •> '
              EPA Region VI
                      •-• v
                      '•  \  \'.V  :
                              je

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Maps portraying political and federal
agencies'  boundaries will  be available
in the West Coast of North America  Data
Atlas Preliminary  edition (November)

-------
Political  Boundaries and
            Maritime  Zones
                             5.1
Legend
     International Boundaries



     200 MM Limit
                                               n50-Mifc Unit
                                               100-MllB Limit in Canada
                                               iPiorvtMd 0> Pollution Zr>n»\
                                                  a Intsnm Coastal Zone
                                             ~~1 Corporation Boundanea


                                          I   ""] Bwoogh Boundaries


                                          I     IBorooohs

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          EAST COAST STRATEGIC ASSESSMENT PROJECT
WORCA
The Use of Coastal Zone Color Scanner Imagery
   to Identify Nearshore  Ocean Areas Affected
             by Land-Based Pollutants

          Thomas F. LaPointe and Daniel J. Basta
                     January 1981
    Office of Ocean Resources Coordination and Assessment
            Office of Coastal Zone Management
      National  Oceanic and Atmospheric Administration
                 Washington, D.C.  20235

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                         ORCA's Mission
     The Office of Ocean Resources Coordination and Assessment
(ORCA) is one of four  major line office of the National  Oceanic
and Atmospheric Administration's Office of Coastal  Zone Management.
ORCA has the responsibility for the coordination and development
of overall NOAA policy positions in two important ocean use
areas -- outer continental shelf oil and gas exploration and
development and marine transportation — both ocean uses which
may have significant effects on the management of other  ocean
and coastal resources that fall under the responsibilities of
NOAA.  To complement its evaluation of individual ocean use
proposals, ORCA has initiated a series of "strategic assessments"
of the Nation's coastal and ocean regions.  This document descirbes
a study undertaken as part of a strategic assessment of the East
Coast of the United States.

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Introduction

     This paper describes an analysis undertaken by the Office of Ocean
Resources Coordination and Assessment (ORCA) as one part of its Eastern
United States Coastal and Ocean Zones Strategic Assessment Project.*   The
East Coast project is the first of five regional assessments initiated by
ORCA which focus on large coastal  and ocean regions of the U.S.  These
assessments will cover the entire "coastal  zone" of the U.S. (excluding
the Great Lakes), extending seaward to the 200-mile limit of the fishery
conservation zone and including all  of the outer continental shelf as defined
by the 200-meter isobath.  Their purpose is to identify ocean resource use
conflicts before they occur, so that resources can be developed or conserved
in an effective manner and environmental damages minimized.  The assessments
are described as being "strategic" because they are carried out from  a
comprehensive planning perspective intended to complement, not replace, the
detailed "tactical" analysis of coastal and ocean use proposals.

     The objective of this analysis was to utilize remotely sensed satellite
imagery to determine the spatial boundaries of nearshore areas or zones
likely to be affected by pollutants from land-based sources, so that  data
collected on the presence or absence of living marine resources could be
combined with information on land-based pollutant discharges in a preliminary
and relative assessment of potential risk.   These areas have been termed
"ocean zones of impact".  The actual size and shapes of these zones vary,
depending upon: (1) type and quantity of pollutant discharge; (2) local
meteorologic conditions; and (3) oceanographic/hydrodynamic conditions.

     Ocean zones of impact related to east coast estuaries and embayrents
were approximated using reflectance patterns from data transmitted from the
Coastal Zone Color Scanner (CZCS) instrument mounted on the NASA Nimbus-7
satellite.  Data were transformed from numerical measures of radiance to
photographic images suitable for identifying and mapping ocean impact zones
through a simple enhancement technique.

     Many similar applications of remote sensing imagery exist in the literature.
These applications are based on the property of waters high in organic and
inorganic particulates and dissolved matter to alter the way in which sunlight
is reflected.   For example, waters high in suspended solids scatter  incident
light of certain wavelengths increasing reflectance relative to surrounding
clearer waters.  Remote sensing instruments, like the CZCS, can detect this
higher reflectance.  The assumption is that the spatial  distribution  of
waters of high reflectance which can be related to a point of discharge,
e.g. the mouth of a river, is indicative of the dispersion of pollutants
discharged at that point.*
The authors gratefully acknowledge Dr.  Warren A.  Hovis  and Mr.  Lee
D. Johnson, Office of Research, National  Earth Satellite Service,
without whose expert guidance and assistance this project could  not
have been undertaken.

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     Only  a  preliminary  identification of ocean impact zones along the east
 coast was  attempted in this study, and those developed were used primarily
 in  an illustrative manner  in the East Coast Project.  The analyses required
 to  make a  detailed assessment of the changing boundaries of these zones
 (over time)  were  beyond  the scope, objectives, and resources of the overall
 project.

 Methodology

     Estimating the boundaries of east coast coastal and ocean zones affected
 by  land-based sources of pollutants involved four steps.  First, a determination
 had to be made as to which remote sensing instrument would best capture the
 phenomenon of interest.  Second, the study area had to be divided into subregions
 that associated pollutants generated by sources located in specific land areas
 with the points at which these pollutants entered coastal waters, e.g., the
 mouths of  rivers  and outlets of embayments.  Third, large amounts of remotely
 sensed data  had to be screened, processed, and then analyzed for each subregion,
 including the selection  of data from preliminary images ("quick looks"), the
 translation  of numerical data into visual images, and the enhancement of those
 images, and their analysis.  Fourth, individual images taken at different
 times were combined for  each subregion to arrive at an estimate of the maximum
 observed boundaries of ocean zones that could be affected by pollutants
 entering coastal waters.

     Choosing a Remote Sensing Instrument:  Two remote sensing instruments
 instruments were investigated: the Coastal Zone Color Scanner (CZCS) and the
 Landsat 1 and 2 Multispectral  Scanner (MSS).  The CZCS was designed to monitor
 changes in ocean turbidity and chlorophyll concentrations.  It is mounted on
 the Nimbus-7 satellite launched on October 23, 1978.  The MSS was designed
 to discriminate among land masses and land uses, but has also been used with
 considerable success in  identifying turbid conditions in coastal  and ocean
 waters.  The MSS has been in orbit for more than a decade.   Table 1 compares
 the specifications of each instrument.

     Although either instrument could have been used to approximate ocean
 impact zones, the CZCS was superior for this purpose.  The capability of the
CZCS to detect low radiance values (the measure of reflectance) is an order
 of magnitude greater than that for the MSS.   This is an important feature
 for analyzing ocean areas which have low reflectance compared to land areas.
 Radiance resolution as measured by the number of interva-ls in the light
 intensity range of interest is many times greater for the CZCS (Hovis, 1979;
 Hovis, 1980).  In addition, the larger spatial  coverage of the CZCS (800m
 resolution vs 80m for the MSS) was more appropriate to the scale of the
 study area.  Finally, while it was obvious that the MSS data base was more
 extensive than that for the CZCS (the MSS has been in orbit five times longer),
 an initial  screening of the CZCS scenes that had been processed to date

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Table 1.  Comparison of Specifications of  Nimbus-7  Coastal  Zone Color
          Scanner and Landsat Multispectral  Scanner
CHARACTERISTIC
Spectral Bands




Radiance Intervals
Spatial Resolution
at Nadir
Swath width
Processed Scene Size
COASTAL ZONE
COLOR SCANNER
Wavelength
Range (run)
433-453
510-530
540-560
660-680
700-800

Saturation
Radiance*. &
5.41-11.46
3.50-7.64
2.86-6.21
1.34-2.88
23.9

256
325 meters
1600 km
1600 km by 800 km
MULTISPECTRAL
SCANNER
Wavelength
Range (nm)

500-600
600-700
700-800
800-1100
Saturation
Padlance

24.8
20.0
17.6
15.3
64
80 meters
186 km
186 km by 186 km
                 a. Units In mW/cn^ ster urn
                 b. Bands 1 through 4 programmable in four steos for
                   varying solar elevation angles
indicated adequate CZCS data was available to  achieve  the  limited objectives
of this analysis.

     Three CZCS bands (ranges of wavelengths)  were chosen  for the analysis:
band 2(510 nm to 530 nm); band 3(540 nm to 560 nm);  and  band  4(660 nm to 680
nm).  these three bands, in the blue-green, green, and red portions of the
visible spectrum respectively, are also contained within the  wider MSS bands
4 (500 nm to 600 nm) and 5 (600 nm to 700 nm).   Their  selection  was based
upon a review of similar applications utilizing the  MSS, which strongly
suggested that the best discrimination of ocean turbidity  is  obtained in the
500 nm to 700 nm range  (Pirie, 1973; Moore, 1974; Polcyn and  Sattinger,
1979; Klemas, 1973 and; Bowker and Witte, 1977), with  the  best resolution in
the 600 nm and 700 nm range.  Measurements taken in  bands  on  either side of
this range often contain considerable interference caused  by  algae containing
cholorophyll, which strongly absorbs light in  the lower  blue  region and
reflects light with wavelengths above 700 nm (Hovis  and  Leung, 1977; Bowker
and Witte, 1977).  The three CZCS bands differ in the  extent  to  which they

-------
penetrate clear water and their sensitivity to atmospheric reflectance
(backscatter).  For example, Band 2 (blue-green) is deeply penetrating (about
30 meters in clear water) and quite sensitive to atmospheric conditions,
while at the other extreme band 4 (red) penetrates only the upper few meters
of the water column with lesser atmospheric interference (Moore, 1974).

     Identifying Subregions for Analysis:  Three considerations helped to
define subregions of the east coast.  First, the subregions had to be of
sufficient size to be commensurate with the strategic focus of the East
Coast Project and completely cover the entire study area.  Second, their
size had to be compatible with the spatial  resolution of the CZCS.  Third,
and most important, the subregions had to relate areas containing land-based
pollutant sources with the points at which their pollutants enter coastal
waters, i.e., through the mouths of rivers and outlets from embayments.

     These considerations resulted in the division of the study area into
sixteen subregions defined by the commonly accepted hydrological boundaries
of major east coast river basins, as established by the Water Resources
Council (Water Resources Council, 1978).  Figure 1 shows the subregions  and
identifies the number of major rivers in each.  In general, pollutants which
are discharged into these rivers eventually reach coastal waters after a
specified time and after undergoing various physical  and chemical  degradation,
deposition, and transformation processes. The outlets of these rivers or
embayments, e.g., the mouth of Delaware Bay at Cape May, are the primary
points at which land-based pollutants enter coastal waters.  They serve  as
the coastal  reference points to identify ocean impact zones.

     Analyzing CZCS Data:  At the time of this analysis (August-September 1980),
approximately 150 CZCS scenes had been processed onto computer tapes suitable
for analysis.3  Each scene represents a portion of a single pass of the
Nimbus-7 satellite over a specified area.  Twenty of these scenes  which
contained data on some portion of the east coast, were screened to the extent
to which cloud cover or thinner atmospheric formations, i.e., aerosols,  obscured
observation.   Scenes which did not show the coastal portion of at least  one
entire subregion free of cloud cover or aerosols were excluded from the
analysis.  The original set of twenty scenes was reduced to ten.  These  are
listed in Table 2, and the subregions to which they apply are identified.

     Numerical  data for each scene (radiance measurements)  were next transformed
into photographic images on a minicomputer/viewscreen system developed and
maintained by the Office of Research of NOAA's National Earth Satellite Service.
The system was also used to magnify those portions of each  scene corresponding
to the coastal  areas of each subregion.   Each magnified image was  then manually
enhanced to accent the "reflectance structure" of coastal  waters.4

     Magnified images were enhanced by reducing the effective radiance range
and range center.  This technique effectively blacks out areas at  the lower
end of the reflectance scale (e.g., areas of deep clear ocean where most

-------
 Ea»Urn Urtt*d Slatoa Coastal and Ocean ZOOM
             (^aaiy M OHfc.. t< Co-** Jun. !*•***«• 4 NCWA
MMBIM
gg
1 Nuilhorn Maine
2 Sam Heir (mack
3 Massachusetts
lll«)ik- lildi.l
4 llousatnnlc-
(.OMm-< I Icill
5 Hudson Now Jersey
'• Itolawa.p

7 Sus(|uehanna Potomac

II Toil -.laws
9 Chowan-Roanoke
III Pamltco
II Cape fear
1? Poo llee Santee
1) Cooper-fdlsto
14 Savannah

15 St. John1;
e/
16 South Florida
Area
(Sq.ml.)
31.110
6.5?;
6 .6111

17, ?H

10,\1l
16.569

?0.6?9

19.973
6.195
18.7(18
14.161
I7.34R
?«..975
35.595

10.079

19.708
1977
Po|Hjlat lor
(,1.000)
667
921
6.151

4.379

19.167
7.98?

6.460

?.3?6
10.525
1.259
8.715
l,9?0
3,019
1,9/3

1,598

3,486
OITlSIAl CnUNIIIS
Area
(sq..l.)
5.907
2.947
3.745

2.269

8.946
5.057

8.294

6.374
3.644
3,012
2.677
2.901
4.329
2,893

5.101

13.267
Populat Ion
(xl.oon)
161
513
3.811

1,883

15.961
4.591

1.109

1.747
136
145
?2II
138
394
281

1.012

I.B58
SUBRIGION:' Ualer H.»,o.ir c«
f(o. o7
Major
« i vers
4
1
2

3

3
I

2

1
2
2
2
2
5

1

0
Surface
Storage
(sq.Kl.)
175
84
23

III

83
27

P 14
UCl c/
LC.I 23
| 192
495
472

31

1.081
Mo,,,,
III sell «ir«]r
(cfs)
17,900
9.B70
4,590

17.1110
a/
15.1.11(1
15. Mm
b/
S/P 11.29(1"
UCl
LCl 14.6011
i 25,900
28.000
25.500
tl
11.700

7.310
                                                                     a/ Discharge value Incl.xles only the lower llurfson River to avoid double counting the MOM value
                                                                       fro*  the upper Hudson region.
                                                                     b/ Discharge value Includes flow frun the Susquehanna River.
                                                                     c/ Ihe Up|*r aid lower Chesapeake (ML  ami IC| cannot be broken down further  for
                                                                       surface storage and lean discharge  categories.
                                                                     d/ A IISHS estimate for flow Into the Atlantic.
                                                                     ct Ihls  subreglon Includes counties which drain Into the Gulf of Meilco. A USfiS estimate for
                                                                       for discharge InLo the All ml It  linn this area Is 7.700 cfs.
Subregions for Analysis
Figure  1.    Analysis  Subregions  and  Estuarine  Boundaries

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 Table 2.  CZCS Scenes Used to Define Ocean Impact Zones
ORBIT
NUMBER
OF CZCS
SCENE
130
268
2715
3226
3240
DATE
OF ORBIT
Nov. 2. 1978
Nov. 12, 1978
May 8, 1979
June 14, 1979
June 15, 1979
I
3309 June 20, 1979
3351
4180
4235
4249
June 23, 1979
Aug. 22, 1979
Aug. 26, 1979
Aug. 27, 1979
CLOCK
TIME
(EST)
12:11
11:36
11:13
10:39
10:57
11:38
11:38
11:28
11:00
11:19
ANALYSIS SUBREGIONS
IN SCENE
15,16
13,14,15.16
1.2.3.4
1.2.3,4.5.6.7.8.
1.2.3.4.5.6
2,3,4,5,6.7.8.9.11
9,10.11.12.13.14.15,16
4,6.7
8,9.10,12,13
8
of the observed  reflectance  is due to the atmosphere) and those on the very high
end  (e.g.,  land  masses).  The procedure was  performed separately for each of
the  three spectral  bands used, resulting in  three single-band enhanced images.
These images were then superimposed to form  a single, three-color composite
enhanced image.  No single set of rules was  established to perform the
enhancements.  Each enhancement was guided solely by the discrimination in
the  reflectance  structure in coastal waters  which could be visually perceived
on the viewscreen.b  Figure 2 illustrates the results of this procedure
for  a magnified  image of Subregion 5, Hudson-New Jersey.  This procedure is
primarily a qualitative correction for Rayleigh scattering, i.e., light
backscattered to the CZCS instrument by the  atmosphere.  Rayleigh scattering
can account for  50 to 90% of the radiant energy signal on each of the three
CZCS bands  used.  The effect of Rayleigh scattering is to give the images an
overall brightness that obscures the reflectance structure in coastal  and
ocean areas.

     Defining Ocean Zones of Impact:  Ocean zones of impact for each subregion
were defined by  projecting color photographic slides of both the three-color
composite enhanced and unenhanced magnified  images onto a map of the east
coast (scale = 1:2,000,000 or 1 inch = approximately 32 miles).   The outlines
of areas of high reflectance shown on each enhanced image were then transferred
directly onto the map.  Although the projected slides did not always match
perfectly with the map because of differences between the projection of the
map (Lambert conformal conic) and the surface as observed by the satellite
these distortions wereNslight and easy to correct.   Unenhanced images  were'

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2a.  Unenhanced Image
2b.   Enhanced Image
     Figure 2.   Comparison  of Unenhanced and  Enhanced  Images  of  Subregion  5,
                Hudson-New  Jersey (Orbit 3309,  June 20,  1979)

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 Figure  3.   Individual and Maximum Ocean  Impact  Zones Observed for
            Subregion 6, Delaware
                                       '<-—Oreit 4180
                                          -—OrDIt 3226
.... Octin Imp
A*n . nCi
— Mumitf 0
Zone
*ct Ian«s
used to check the orientation of each image with coastline features shown on
the map; coastline features on enhanced images were often distorted when the
images were enhanced.  Figure 3 illustrates how impact zones defined by
individual images were combined to approximate a maximum ocean impact zone^
for Subregion 6, Delaware.  Figure 4 shows the maximum ocean zones of impact
defined for each subregion.

     The ocean zones of impact identified in Figure 4 cover about 90% of the
coastline of the East Coast.  The zones generally extend about 10 to 30
miles offshore, with the exception of zones in northern Maine (a special
case), and overlap among subregions in several cases.  In most cases (Subregion
3, Massachusetts-Rhode Island, through Subregion 14, Savannah), the enhanced
images clearly show ocean zones of impact emanating from the mouths of major
rivers and/or the outlets of major embayments.  In these zones high reflectance
indicates the existence of areas of relatively high turbidity directly related
to sediment and pollutant discharges entering nearshore ocean waters.   However,
in some cases (Subregions 1 and 2, Northern Maine and Saco-Merrimack,  and
Subregions 15 and 16, St. Johns and South Florida), ocean impact zones could
not be directly related to specific discharge points and, therefore, to
pollutant discharges.  In these areas the observed ocean zones are relatively
large and are assumed to be the result of coastal  processes such as the
upwelling of nutrient rich bottom waters (Appolonio, 1979).  The assumption
is that although these zones are not the result of pollutant discharges,
they are general  nearshore "mixing zones" within which pollutant discharges
from land-based sources are relatively confined and concentrated and,  therefore,
were reasonable ocean impact zones for the purpose of the East Coast Project.

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                                          Maximum Ocean Zone
                                          of Impact
Figure 4.   Maximum Ocean  Zones of  Impact Observed
            for Analysis  Subregions

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                                      10
Evaluation and Interpretation

     Each of the ocean impact zones identified in Figure 4 were evaluated and
interpreted by investigating the individual images comprising each maximum
impact zone in relation to:  (1) the extent to which areas of reflectance,
assumed to be turbidity resulting from land-based sources of pollutants,
could be due to other factors; and (2) whether or not these areas made reasonable
sense based on climatic conditions, e.g., precipitation, known to exist
immediately preceding and at the time at which an image was recorded.

     Two possible causes of reflectance in coastal waters other than turbidity
were assessed — bottom reflectance in shallow waters and reflectance due to
aerosol formations.  Bottom reflectance was assessed by assuming that if an
area of reflectance was due solely to shallow waters, this area would appear
the same in each image containing the area.  Conversely, if at least one
image which contained the areas showed no reflectance emanating from it, it
was assumed that no or very little bottom reflectance affected the image.
In addition, examination of bathymetry showed that only in one case was an
area of consistently high reflectance in very shallow waters (less than six
to ten meters).  This area, the Nantucket shoals in Subregion 3, was therefore,
not considered an ocean impact zone.   Aerosols were, for the most part,
easily identified in the unenhanced and/or enhanced images.   Remaining
uncertainties were resolved by case-by-case judgements comparing the locations
of possible sources of turbid water,  i.e., the mouths of major rivers, bays
and estuaries to nearby, more obvious atmospheric formations.

     Four climatic conditions known to affect the extent and movement of
turbidity in coastal waters were investigated:  seasonal currents (Pirie,
1973); precipitation (Rouse and Coleman, 1976); wind intensity and direction;
and tidal  stage (Hunter, 1973).  Data were obtained from the East Coast Data
Atlas (surface currents), NOAA Daily  Weather Maps (precipitation and wind
data), and the National  Ocean Survey  (tidal stages).  Data on  these conditions
were used  to qualitatively assess the sizes and shapes of the  observed ocean
impact zones.   In most cases, the ocean impact zones appeared  reasonable
based on seasonal  currents, precipitation, and prevailing wind conditions.
However, this was generally not the case with respect to tidal  stage.  For
example, in those subregions in which ocean impact zones were  most obviously
due to discharges from river mouths and embayments,  the images showed major
differences in both the extent and direction of the zones.   These differences
were generally consistent with what would be expected from precipitation and
prevailing wind conditions, but often counter to what would  be anticipated
based on tidal  stage (i.e., the largest zones observed during  incoming or
high tide).  This discrepancy may simply be due to the limited number of
images of  each subregion, or may have a physical  basis, e.g. the relative
influence  of tides as compared to wind or streamflow.

     Table 3 identifies  the specific  locations at which the  data used to
assess each image were collected, reports relevant information on each climatic

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                             11
Table 3.  Summary of CZCS Images of Individual Subregions
          and Associated Climatic Data
ORBIT NUMBER
OF CZCS
SCENE
Subreglon 1
2715
3226*
3240
4235
Subreglon 2
2715
3226*
3240
4235
Subreglon 3
271 5
3226*
3240
3309
Subreglon 4
2715
3226
3240
3309
4180
Subreglon 5
3226
3240*
3309*
Subreglon 6
3226*
3240
3309
4180*
Subregions 7/8
3226*
3309
4235
4249*
DESCRIPTION OF AREAS OF HIGH
REFLECTANCE EXTENDING BEYOND
ESTUARIES WHICH ARE ATTRIBUTED
TO OCEAN COLOR
none
large area extending southward from Bay
of Funrfy
none
none
none
large faint area along entire coast
snail area in Casco Bay
very small plume from minor river
very small plume from Charles River
large plumes from Charles River and
southern bays
small plume from Charles River
small plume from Charles River
confined to Long Island Sound
confined to Long Island Sound
confined to Long Island Sound
confined to Long Island Sound
confined to Long Island Sound
none In cloud free area
large plume from Hudson River extending
along Long Island coast
large faint plume extending along
New Jersey coast
small plumes from minor N.J. rivers;
large southerly plume from Delaware Estuary
small plumes from minor N.J. rivers;
large southerly plume from Delaware Estuary
small faint plumes from minor N.J. rivers
large plumes from minor N.J. rivers;
small faint plume from Delaware Estuary
small plume from Chesapeake Bay extending
along coast
none
large easterly plume from Chesapeake
very large northeasterly plume from
Chesapeake Bay
ATMOSPHERIC
INTERFERENCE!
Clouds
low
none
moderate
low
none
none
low
low
none
none
low
none
none
none
none
none
none
moderate
none
none
none
none
none
none
none
none
none
none
Aerosols
low
none
moderate
moderate
moderate
none
moderate
moderate
none
none
low
none
none
none
none
none
none
none
none
none
none
none
none
none
none
none
moderate
none
CLIMATIC CONDITIONED
Rainfall
for
Previous
4 Day$c
(Week)
Portland. ME
T(T)
T(T)
T(T)
T(H)
Portland. ME
T(T)
T(T)
T(T)
T(H)
Boston, MA/
Nantucket, MA
T(L)
N(M)
H(M)
L(L)
Hartford. CN/
Albany, NY
T(L)
H(H)
H(H)
L(L)
M(M)
Albany. NY/
New York, NY
H(H)
H(H)
L(L)
Phll'phla. PA/
Salisbury, Ml)
H(H)
H(H)
M(H)
VH(VH)
Salisbury, MD/
H(H)
M(M)
M(VH)
M(VH)
Wind
Direction
Portland. ME
calm
U
SU
U
Portland. ME
calm
calm
SU
V
Boston. MA/
Nantucket. MA
ENE/WSW
UNU/N
WSW/WSU
NU/N
no station
no station
no station
no station
no station
New York. NY
N
USU
NNW
no station
no station
no station
no station
Norfolk, VA
ENE
ME
USU
SH
Tidal
Staged
Portland. ME
HL
LH
LH
LH
Portland. ME
HL
LH
LH
LH
Boston, MA/
Nantucket. MA
HL/HL
LH/LH
LH/L
HL/HL
New L'don, CN/
L
H
LH
L
LH
Sandy Hook. NY
H
H
L
At 'tic Clty.NJ
H
H
LH
L
Hamp'n Rds. VA
H
L
H
H
                                       (continued on next page)

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                                                           12
ORBIT NUMBER
OF CZCS
SCENE
Subreglon 9
3309*
3351*
4235
Subreglon 10
3351*
4235*
Subreglon 11
3309
3351*
Subreglon 12
3351
4235*
Subreglon 13
268*
3351*
4235"
Subreglon 14
268*
3351
Subreglon 15
130*
268*
3351
Subreglon 16
130*
268*
3351
DESCRIPTION OF AREAS OF HlfiH
REFLECTANCE EXTENDING BEYOND
ESTUARIES WHICH ARE ATTRIBUTED
TO OCEAN COLOR
small nearshore plume from Inlet to sound
large easterly plume from Inlet to sound
small faint plume from Inlet to sound
small plume from Inlet to sound
small plume from southern tip of Panllco
Sound
none
small plume from minor river; small plume
from Cape Fear River
none
small faint plume from Pee Dee River
large very distinct areas from coastal
embayments
small distinct areas along entire coast
single plume fron northern embayment
large very distinct areas from coastal
embayments
faint areas along coast
large area along southern coast
large area along entire coast
narrow faint band along coast
large area along northern coast
large area along northern coast
none
ATMOSPHERIC
INTERFERENCE*.
Clouds
moderate
none
moderate
low
low
moderate
moderate
high
low
low
none
moderate
low
low
moderate
low
moderate
moderate
low
low
Aerosol s
none
none
none
moderate
low
moderate
moderate
moderate
moderate
low
low
moderate
low
moderate
none
low
moderate
none
none
none
CLIMATIC CONDITIONS
RaiTi'fall
for
Previous
4 Oaysc
(Week)
Hatteras. NC
L(L)
L(H)
T(M)
Hatteras, NC/
Raleigh. NC
M(VH)
TCH)
Wilmington. NC
VH(VH)
T(VH)
Wllm'gton, NC/
Charleston, SC
L(VH)
L(VH)
Charleston, SC
T(T)
L(L)
L(L)
Savannah, GA
T(L)
L(H)
J'sonvllle, FL
L(M)
T(T)
T(T)
Miami, FL
L(VH)
VH(VH)
T(VH)
Wind
Direction
Hatteras. NC
ENE
USW
SSE
Hatteras. NC
wsu
NE
Wilmington, NC
N
WSU
Charleston, SC
SH
NE
Charleston, SC
ENE
SW
NE
Savannah, GA
calm
wsw
J'sonvllle. FL
calm
calm
calm
Miami. FL
NNW
NNE
NE
Tidal
Staged
Hamp'n Rds. VA
L
HL
HL
no station
no station
Myrtle Ben. SC
L
L •
Charleston, SC
L
HL
Charleston, SC
L
L
HL
Edlsto, GA
L
L
D'tona Bch, FL
HL
L
L
Miami, FL
HL
L
L
• Image used to define all  or a portion of seaward boundary of maximum
    ocean Impact zone
a.  A qualitative indication of Interference over coastal  and
    nearshore waters by simple inspection of Image
b.  First station/second station as listed
c.  Highest rainfall in period at any single station
    Legend:   T - trace amount or less
              L - trace to  0.3 1n.
              M - 0.3 to 0.8 in.
              H . 0.8 to 1.3 in.
             VH - greater than 1.3 1n.
d.  Legend:   L - low tide  +/• 1.5 hours
             LH • Incoming  tide. 1.5 to 4.5 hours after low tide
              H - high tide »/- 1.5 hours
             HL - outgoing  tide. 1.5 to 4.5 hours after high tide

-------
                                       13
 condition  at  the  time  the  image  was  recorded, and  describes the size, shape,
 and intensity of  the ocean impact  zones  identified  by each image.  The table
 also summarizes the extent of atmospheric  interference  visible in each image.
 An  evaluation and interpretation of  the  ocean impact zones defined for each
 subregion  follows.

      Subregions 1 and  2. Northern  Maine  and Saco-Merrimac:  Three of the
 four scenes utilized for these subregions  showed little or no reflectance
 structure  beyond  the estuarine areas and bay mouths which comprise most of
 the coastline.  The fourth scene,  however, indicated a  large area of high
 turbidity  extending southward from the Bay of Fundy (see Figure 5).  In this
 scene the  structure of the high  reflectance is very well defined along the
 entire  coast  of Subregion  1, but becomes much fainter and less distinct
 south of Casco Bay in  Subregion  2.

      The general  southerly orientation of  the zone  is consistent with reported
 current regimes (NOAA/CEQ,  1980).  However, minimal precipitation during the
 preceding  week would tend  to rule  out any  significant contribution to reflectance
 in  this zone  from the  major land-based pollutant sources in the region --
 sediments  from agricultural and  silvicultural sources.   The zone of high
 turbidity  is  likely due to  high concentrations of algae associated with a
 upwelling  of  nutrient  rich  bottom waters.  This existence of such an upwelling
 along the  coast of Maine has been reported by Appolonio (1979).   The shape
 of  nutrient concentration  contour lines  reported by Appolinio is very similar
 to  the reflectance structure shown in Figure 5.

      Subregions 3. 4.  and  5 (Massachusetts-Rhode Island. Housatonic- Connecticut.
 and  Hudson-New Jersey:Two distinct ocean impact zones were identified in
 Subregion  3 -- the plume of the Charles River draining the Boston area, and
 a zone emanating  from  Narragansett Bay and Buzzard Bay to the south (see Figure 6),
 The  impact zone defined by the large plume from the Charles River derives
 from scene 32267  which was recorded two days after 0.4 inches of precipitation
 fell  in the Boston area, and during and a westerly prevailing wind.   Considerably
 smaller plumes were observed in the other three scenes containing this  subregion,
 when  climatic conditions were less strong.

     The maximum  zone  of impact emanating from Narragansett Bay  and Buzzard Bay
 was  also defined  by scene 3226.  The general  southwestly direction of this
 impact zone agrees with the direction of coastal  currents and mean wind (due
 north) on  the day the  scene was recorded.  Precipitation occured  only preceding
 scenes 3226 and 3240.   No precipitation occured during the week  prior to  the
 other scene for this region.  Scene 3240, taken one day after scene 3226,  is
 the only other one which shows an ocean impact zone, although much smaller
 than that  shown by scene 3226.   The smaller zone shown  in this scene might
 be due to the prevailing wind direction on  this  day (west-southwest), which
would tend  to push surface waters into  the  bay mouth.

     Subregion 4,  had the largest number of applicable  scenes  (five), covering
a considerable range of climatic  conditions,  e.g.,  from low to high  precipitaiton

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                             14
                               Grand Nanan Island


                                     Ocean Impact
  Figure 5.  Enhanced  Image of Subregion 1, North Maine
             (Orbit  3226,  June 14, 1979)
Figure 6.  Enhanced  Image of Subregion 3, Massachusetts-
           Rhode  Island  Coastal  (Orbit 3226, June  14,  1979)

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                                       15
 and low to near high tide.8  The principal  conclusion is that  the very
 high turbidity observed inside Long Island  Sound  does not  extend  beyond  the
 mouth of the Sound — at least at the surface (see Figure 7).   For example,
 scenes 3226 and 3240 taken two and three days after moderate to heavy
 precipitation over western Massachusetts and Connecticut showed very high
 reflectance over most of the water surface  inside the Sound, with the strongest
 structure located between the most likely sources of suspended sediment, the
 Connecticut and Housatonic rivers.   However, neither in  these  nor the three
 scenes of lesser reflectance, did the structure extend beyond  the mouth  of
 Long Island Sound into ocean waters.

      For subregion 5, the New York  Bight, three scenes were available, one
 of which was partially obscured  by  cloud cover.   An ocean  impact  zone extending
 easterly along Long Island (scene 3240)  and  south along  the New Jersey coast
 (scene 3309) was identified (see Figure  2b and Figure 7).  The  area of reflectance
 shown in scene 3240 is considerably more distinct  than in  scene 3309.  Scene
 3240 was preceded by 1.2 inches  of  precipitation  in the  Hudson  River drainage
 basin, while scene 3309  was preceded  by  relatively  little  precipitation.
 The orientation of the reflectance  structure in the two  scenes  is  in agreement
 with the respective westerly and northerly directions of the prevailing
 winds.   No  impact zone was observed in scene 3226  because  of cloud cover.
 These results are generally supported by other remote sensing and field
 sampling studies  of the  New York  Bight (Hovis and Leung, 1977;  Polcyn and
 Sattinger,  1979).

      Subregions  6.  7.  and  8.  Delaware. Susquehanna-Potomac. and York-James:
 Two separate impact  zones  were identified in  Subregion 6, a small  zone defined
 by  several  small  rivers  and  estuaries which  discharge directly  into the
 ocean  along the  New  Jersey coast, and a  large zone,  produced by the Delaware
 estuary  (see Figure  8).  For the  small zone  all scenes showed small, but
 distinct, plumes  from the  Great Egg and Wading Rivers, plumes similar to
 those  observed with  Landsat  imagery (Klemas,  et al, 1973).  The largest  of
 these  plumes  were observed  in scene 4180, taken on the day of a very heavy,
 localized storm.  The  ocean zone of impact emanating from the Delaware estuary
 was constructed from two scenes taken within a few days of a high  precipitation
 in  the Delaware River  drainage basin.  The largest part of the  zone, directed
 southward,  was taken  from  scene 3226.  In the second scene (4180), partially
 obscured by aerosol, a much smaller zone was visible along the  northern  tip
 of the estuary mouth.

     Ocean  impact zones related to the Delaware Estuary have been  extensively
 studied with Landsat MSS imagery, through research conducted at the University
 of Delaware  (Klemas, 1980; Klemas et al., 1973).   Results have  demonstrated
 a pattern of reflectance implying a southerly flushing of the bay  along  the
Delaware and Maryland coast with a much smaller zone directed northward
 along the New Jersey coast.  These findings  generally support the  ocean
 impact zones defined above.

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                                                                                                          CTl
Figure 7.   Enhanced Image of Subregions 4 and  5,
           Housatonic-Connecticut  and Hudson-New  Jersey
           (Orbit 3240,  June 15,  1979)
Figure 8.   Enhanced Image of Subregion 6,
           Delaware (Orbit 3240,  June 15,  1979)

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                                       17
      Subregions  7  and  8  were  combined  into a  single  large area, the entire
Chesapeake  Bay drainage  system.  The largest  portion of coastline for both these
subregions  is along  the  Chesapeake Bay which  receives the overwhelming mass
of  pollutants.   However, discharge into  nearshore ocean waters takes place
only at  the mouth  of the Bay  in  Subregion 8.  No scene could clearly distinguish
any reflectance  structure along  the ocean shores of Maryland and Delaware
(Subregion  7) from the high reflectance  emanating from the bay mouth.

      During the  summer months currents along  this stretch of coast have two
directions:  southerly along  the coast and northwesterly from the ocean into
the coast  (NOAA/CEQ, 1980).   A southerly flushing of the bay similar to that of
the Delaware estuary was evidenced during two recent sampling surveys of the
Chesapeake  Bay plume (National Marine Fisheries Service, 1980).

     The  maximum  impact zone for  these subregions  was defined by scenes 3226
and 4249.   In scene  4249 the  ocean zone  is strikingly defined by a northeasterly
directed plume of  turbid waters  flushing from the bay.  While the structure
of  high  reflectance  continues  northward  along the entire coast of Subregion
7,  it is uncertain whether and to what extent this is directly caused by Bay
waters.  Scene 4235  taken the  previous day and partially obscured by aerosols,
indicated an almost  identical  plume in size and direction.   In both images,
the orientation  of the impact  zone is consistent with the direction of prevailing
winds, coming from the southwest in scene 4229, and west-southwest in scene
4235.

      In  scene 3226 wind  direction was reversed (i.e., east-northeast).   Instead
of  an expansive  plume, the impact zone has a flat seaward boundary stretching
from the northern  tip  of  the  bay to the North Carolina-Virginia border.   It
should be noted that all   of these scenes were recorded at or near high tide.
The single  scene recorded near low tide (3309), when some flushing of the
bay would be expected, showed  no ocean zone of impact.

     Subregions 9. 10. 11. and 12. Chowan-Roanoke.  Pamlico.  Cape Fear,  and
Pee Dee-Santee:Data  for these subregions consisted of only two scenes,
each of  which contained  some  interference from nearshore clouds and aerosols.
In  subregions 9 and 10,  ocean  impact  zones were defined by  small  plumes  at
the major outlets  of the Albemarle and Pamlico Sounds,  the  dominant coastal
features of the North Carolina coast  (see Figure 10).   No other areas of high
reflectance were observed along most  of the coast of Subregions 11 and 12.
Except for the southern tip of Florida, this is the largest  stretch of coast
without  an observable  ocean impact zone.   While the data for these subregions
is  admittedly thin, the absence of impact zones is  not  surprising.   This
stretch  of coast has only two major river discharges -- the  mouth  of the
Cape Fear River in Subregion 11 and the Pee Dee/Santee  Rivers at  the extreme
southern tip of Subregion 12.   These  subregions contain no  large  bays  or
estuaries, and a  only minimal  network  of smaller rivers.  The impact  zones
of the two rivers  (both taken from scene 3351) appeared  as  a  dense "yellow"
color on the unenhanced  image, a visual  aspect very similar  to the extremely
high reflectance  and color tone observed  in unenhanced  images in  scenes  of
Subregions 13 and 14.

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                              18
Figure 9.   Enhanced Image of Subregions 7 and 8, Susquehana-
           Potomac and York-James (Orbit 4249, August 27,  1979)

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                                  19
                                                      EZr ,
                                                   "•Ocean Impact
                                                   ?--  Zone
     Figure 10.   Enhanced  Image  of Subregion 9, Chowan-Roanoke
                  (Orbit  3351,  June 23,  1979)
Figure 11.  Unenhanced Image of Subregions 13  and  14,  Pee  Dee-Santee
            and Cooper Edisto (Orbit 268, November  12,  1973)

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                                       20
      Subreigons 13 and 14. Cooper-Edisto and Savannah:   The results  for
 Subregions 13 and 14 were unexpected.The entire coast  of  these  two subregions
 exhibited an extremely well  defined reflectance structure in offshore
 waters in two of the three scenes  available.   The structure appeared as  a
 deep yellow - orange in the unenhanced image.   Close inspection suggested
 that this reflectance is the result of discharges from many rivers and
 small  bays rather than a coastal  process.   In  several areas the deep yellow
 color could be traced "upriver" for a  considerable distance,  in others,
 distinct plumes from individual rivers and bays could be identified.  The
 lack of a single reflectance structure covering a large  area  raises  doubts
 about  the influence of coastal  processes.   However,  these observations
 should not rule out the possibility that coastal  processes  are also  affecting
 the reflectance.  For example,  the strongest reflectance structure was
 observed in the image of Orbit  268 (see Figure 11).  On  the date  of  this
 orbit  both previous precipitation  and  wind direction would  suggest a
 minimal  offshore influence from land-based pollutants.

      Subregions 15 and 16,  St. John's  and  South Florida:  The large  ocean
 impact  zones  for these two subregions  are  taken from two CZCS November
 orbits  (130 and 268).   As  illustrated  in Figure 12,  a very  distinct  continuous
 band of  high  reflectance exists along  the  entire coast of Subregions  15
 and the  northern portion of  Subregion  16,  following  very closely the  20
 meter  isobath.   Similar observations have  been  made  by others using more
 advanced image-processing  techniques to  analyze these scenes.  Both scenes
 are part  of the CZCS  "benchmark" series  of the  Nimbus Experiment Team
 (Hovis,  1979).

     Evaluation of  these scenes indicated  that  the reflectance did not
 originate  from the  ocean floor, i.e.,  bottom reflectance.  Scene 3351 showed
 little reflectance  off the Florida  coast.   Neither previous precipitation nor
 pollutant  discharges  offered explanations.  Precipitation in Subregion 15
 was  light  in  the week  preceding the three  scenes.  Land-based discharges in
 the  two  subregions  are  characterized by  only a  few major rivers some of
 which could be  clearly  observed.  Although  the  greatest  pollutant  discharges
 are  in the  more  developed  southernmost counties  of Subregion 16 (NOAA/CEQ,  1980),
 little nearshore reflectance was observed  in this area.   Thus, there was no
 evidence which  suggested that the ocean  impact  zones for these subregions were
 the  result  of  land-based pollutant discharges.    As was the case for Subregions
 1 and 2, the  zones  more  likely result from coastal processes, such as tidal
 mixing of bottom sediments (Lee, 1980).

 Concluding Comments

     This paper  has presented a limited application of satellite imagery  in
 the  context of a large-scale strategic assessment of the east coast.   The
 completeness  of  geographic coverage of satellite data makes them especially
 well suited for  studying areas as large as the entire east coast.   The
CZCS images provided a  single set  of data which encompassed the entire
 study area.  Obtaining comparable  information from other sources,  e.g.,
 from published sampling surveys, would have been a considerably more  complex

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                                21
Figure 12.   Enhanced  Image  of  Subregions 15 and 16, St. John's and
            South Florida  (Orbit  268, November 12, 1973)

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                                      22
 task, and results would have lacked both consistency and geographic coverage.

      This application of enhanced CZCS imagery to estimate the spatial
 extent of the persistence of land-based pollutants in nearshore ocean waters
 was limited by:  (1) the extraordinary complexity of the phenonmena it
 attempted to capture; (2) inherent limitations of remote sensing;  and
 (3) limited availability of data at the time of the study.   For example
 one inherent limitation of remote sensing is that it primarily monitors'only
 surface phenomena.   Reflectance measurements in turbid waters  are  dominated
 by radiation emanating from only the upper few meters of the water column.
 They will not  capture the movement of material  at greater depths or along
 the ocean floor.  Therefore,  the ocean impact zones defined for subregions
 in which  subsurface transport is dramatically different from that  observed
 on the surface will  not  be accurate.   Also,  in most cases ocean impact zones
 will  be underestimated.   This is because  satellite observations  based  upon
 the light scattering of  suspended particles  cannot infer the presence  of
 dissolved pollutants,  which  are not  subject  to  settling  and  disperse  at a
 greater rate than suspended  matter.

      Nevertheless,  the  results have  been  useful.   In  combination with
 data  on the  presence or  absence of marine  species  and  pollutant  discharges
 from  land-based sources,  these  data  are being  used  to  make a preliminary
 assessment  of  the potential risks  to  living  marine  resources among areas
 along  the east  coast.  For example,  potential  risks to a  species (e.g., a
 particular fish or  invertebrate) from  land-based pollutants will be generally
 greater within  estuaries  than nearshore ocean  impact zones and greater in
 nearshore impact zones than other  ocean waters, depending on the types and
 quantities of  pollutants  present and the life-history  function the species
 is  undergoing at the time  (e.g., spawning or  nursing).

     Considerable improvement in the type and quality of  information
 presented here will  be possible  in the near future, as more and more CZCS
data are made available.  As  indicated above, only a small number of CZCS
Sre™h^d been Processed at the time of this study.  Recently  processing
of CZCS data has gone into accelerated production.  This expanded data set
will enable a much more complete identification and analysis of nearshore
ocean  impact zones,  particularly under different climatic conditions and
over time.

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                                    23
                               Footnotes
1.  For a complete discussion of the East Coast project and its use
    of satellite imagery see Ehler, et al, 1980.

2.  Although the scatter of light by suspended particles is only one
    of many processes which determine ocean color, it is the principal
    phenomenon of interest in the spectral  bands selected for analysis.

3.  All of these plus additional recently processed scenes are now
    being made available to the public through the Environmental
    Data and Information Service, NOAA.

4.  It is important to note that magnifying the image reduces the
    field of view and thereby reduces the variation in atmospheric
    thickness across the image.  This improves the quality of the
    subsequent enhancement.

5.  For most of the images the enhancement was achieved with a band
    width of 60 to 100 counts with a midpoint between 130 and 190
    counts (as opposed to a full range of 256 counts and a 128 count
    midpoint).

6.  The term "maximum ocean zone of impact" refers to the total  area
    of high reflectance observed from all of the images of a subregion.

7.  Note that for ease of exposition scenes are identified by orbit
    numbers.   For example, in Subregion 3 the image developed from orbit
    3226 is referred to as scene 3226.

8.  Tidal stages referred to in discussion correspond with definitions
    in Table 3:

       low tide      - observed low tide +/- 1.5 hours
       incoming tide - 1.5 to 4.5 hours after observed low tide
       high tide     - observed high tide +/- 1.5 hours
       outgoing tide - 1.5 to 4.5 hours after observed high tide

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                                    24


                                References


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 Bowker, D. E.  and W.  G.  Witte.  1977.   "The Use  of Landsat for Monitoring
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 Ehler,  Charles  N., et  al.  1980.  "Strategic  Assessments of U.S. Coastal
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 Lee,  Thomas. 1980.  Department of Physical  Oceanography,  University of
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 Klemas V.  1980.  "Remote Sensing of Coastal  Fronts and  Their Effects on
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 Klemas,  V., et al. 1977.   "Satellite Aircraft and Drogue  Studies  of
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 Klemas, V., J.  F.  Borchardt, and W. M.  Treasure. 1973.   "Suspended
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Moore, Gerald K. 1974.  "Satellite Surveillance  of  Physical Water Quality
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                                   25
National     "sheries Service. 1980.  Superflux Program Review Meeting
National Oceanic and Atmospheric Administration and Council on Environmental
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Pirie, Douglas M. , and David D. Steller. 1973.  "California Nearshore
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Polcyn, F.  C. and I. J. Sattinger.  1979.  A Summary of Remote  Sensing
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Rouse,  J.  J. and J.  M.  Coleman.  1976.   "Circulation Observations in  the
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