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
-------
California
Coastal County
Noncoastal County in
Estuarme Drainage Area
0 50 100 150 200
Miles
-------
Connecticut
Coastal County
Noncoastal County in
Estuarin* Drainage Area
0 5 10 15 20 25
i i ii i I
Miles
-------
Delaware
0
1 —
5 10 15
— I 1 i
Miles
20
1
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Florida
20 40 60
I I I
80 100
-I 1
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Georgia
20 40 60 80
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Louisiana
0
1
20 40 80
1 1 1
80 100
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Maine
Coastal County
Noncoastal County in
Estuarine Drainage Area
0
1—
20 40
— 1 1 i 1 1
Miles
60
1
-------
Maryland
10 20 30 40 50
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Massachusetts
0 10 20 30
i i i i i i i
Miles
I Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Mississippi
0
1
20 40
1 i —
Miles
60
— i
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
New Hampshire
Coastal County
Noncoastal County in
Estuarine Drainage Area
10
20 30
i i i
Miles
-------
New Jersey
Coastal County
Noncoastal County in
Estuarine Drainage Area
10
20
30
=1
Miles
-------
New York
0 20 40 60 80 100
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
North Carolina
20 40 60 80 100
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Oregon
Coastal County
Noncoastal County in
Estuarine Drainage Area
25 50 75 100
Miles
-------
Pennsylvania
Coastal County
Noncoastal County In
Estuarine Drainage Area
Miles 50
-------
Rhode Island
Coastal County
Noncoastal County in
Estuarine Drainage Area
0
1
5
10
1
15
1
20
Miles
-------
South Carolina
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Texas
Coastal County
Noncoastal County
in Estuarine Drainage Area
100
I
Miles
150 200
_| I
-------
Virginia
20 40 60 80 100
Miles
Coastal County
Noncoastal County in
Estuarine Drainage Area
-------
Washington
Coastal County
Noncoastal County in
Estuarine Drainage Area
0 25 50 75 100
Miles
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ESTUARINE DRAINAGE AREAS
-------
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
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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
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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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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
-------
OFFSHORE BOUNDARIES
-------
Offshore Boundaries
-------
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).
-------
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
-------
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
-------
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
-------
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
-------
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
-------
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 •
-------
Federal Agency
Regional Boundaries:
Louisiana, Mississippi
'.
~T
MMS OCS Central Planning Area
J
-------
Federal Agency
Regional Boundaries:
Texas
•> '
EPA Region VI
•-• v
'• \ \'.V :
je
-------
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
-------
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
-------
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.
-------
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.
-------
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
-------
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
-------
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'
-------
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)
-------
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.
-------
Maximum Ocean Zone
of Impact
Figure 4. Maximum Ocean Zones of Impact Observed
for Analysis Subregions
-------
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
-------
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)
-------
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
-------
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)
-------
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.
-------
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)
-------
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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Figure 9. Enhanced Image of Subregions 7 and 8, Susquehana-
Potomac and York-James (Orbit 4249, August 27, 1979)
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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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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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Figure 12. Enhanced Image of Subregions 15 and 16, St. John's and
South Florida (Orbit 268, November 12, 1973)
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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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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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