Chesapeake Bay Watershed Model
Application & Calculation of Nutrient
& Sediment Loadings
Prepared by the
Modeling Subcomittee
of the
Chesapeake Bay Program
EPA 903-R-97-019
CBP/TRS 180/9
Appendix E:
Phase IV Watershed
Land Use &
Model Linkages
to the
Airshed
& Estuarine
Models
Recycted/Becyclabte
Pnniao ««h Soy/Canofa Ink on paper thai
caniart a leas! 50% racyded '<»r
Chesapeake Bay Program
-------
CHESAPEAKE BAY WATERSHED MODEL
APPLICATION AND CALCULATION OF
NUTRIENT AND SEDIMENT LOADINGS
Appendix E: Phase IV Watershed Land Uses
And Model Linkages to the Airshed and
Estuarine Models
A Report of the
Chesapeake Bay Program
Modeling Subcommittee
Annapolis, MD
August 1997
Chesapeake Bay Program
Printed by the U.S.Environmental Protection Agency for the Chesapeake Bay Program
-------
Principal Authors
Angelica L. Gutierrez-Magness
Maryland Department of the Environment
Chesapeake Bay Program Office
Annapolis, MD
James E. Hannawald
United States Department of Agriculture
Natural Resources Conservation Service
Chesapeake Bay Program Office
Annapolis, MD
Lewis C. Linker
United States Environmental Protection Agency
Chesapeake Bay Program Office
Annapolis, MD
Katharine J. Hopkins
Chesapeake Research Consortium
Chesapeake Bay Program Office
Annapolis, MD
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Modeling Subcommittee Members
James R. Collier, Chairman of the
Subcommittee,
Program Manager
Water Resources Management Division
Washington, DC
Mark Bennett
Department of Soil and Water Conservation
Richmond, VA
Dr. Peter Bergstrom
Chesapeake Bay Field Office
US Fish & Wildlife Service
Annapolis, MD
Dr. Arthur Butt
Chesapeake Bay Office
VA Department of Environmental Quality
Richmond, VA
Brian Hazelwood
Metropolitan Washington Council of
Governments
Washington, DC
Dr. Albert Y. Kuo
VA Institute of Marine Science
Gloucester Point, VA
Lewis C. Linker, Coordinator of the
Subcommittee
US EPA Chesapeake Bay Program Office
Annapolis, MD
Dr. Alan Lumb
Hydrologic Analysis Support Section
USGS National Center MS 415
Reston, VA
Dr. Robert Magnien
MD Department of Natural Resources
Assessment Administration
Annapolis, MD
Dr. Ross Mandel
Interstate Commission on the Potomac
River Basin
Rockville, MD
Dr. Bruce Parker
National Oceanic and Atmospheric
Administration/NOS/OES33
Coastal & Estuarine Oceanography Branch
Silver Spring, MD
Kenn Pattison
PA Department of Environmental Protection
Bureau of Water Quality Protection
Harrisburg, PA
Ron Santos
US Army Corps of Engineers
Baltimore, MD
Tom Stockton
MD Department of Environmental Resources
Watershed Modeling & Analysis Division
Annapolis, MD
Paul Welle
USDA Soil Conservation Service
Northeast National Technical Center
Chester, PA
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Acknowledgments
We would like to acknowledge the following groups for their contribution to the
development and documentation of the CBP Land Use Database. The Land, Growth and
Stewardship Subcommittee and the Modeling Subcommittee developed the methodology to
forecast CBP land use to years beyond the 1990 base year and backcast the CBP land use to
the 1985 reference year. Assistance and review of the technical information in this report
was provided by the Nutrient Subcommittee. The Army Corps of Engineers, Waterways
Experiment Station, Vicksburg, Mississippi assisted us in providing what was needed to
document the linkages among the airshed, watershed, and estuarine/living resource models.
Finally, the engineers, scientists and managers of the Modeling Subcommittee and Model
Evaluation Group are acknowledged for their guidance and review in the development and
documentation of the CBP Land Use database. This document and other CBP modeling
documents can be found on the Modeling Subcommittee web page:
http//:www.epa.gov/chesapeake/cbp_home/bayprog/committ/nidsc/mdsc.htm.
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Table of Contents
Section Page
1 Phase II and Phase IV Watershed Model Segmentation, Above and Below 1
Fall Line
2 Model Segments, State Boundaries and County Boundaries 6
3 Counties Within the Chesapeake Bay Watershed by State 19
and Segments
4 Phase II Watershed Model Land Use by Model Segment 31
5 Original EMAP Level 2 Land Use Data by Phase IV Watershed Model 33
Segment
6 Corrected EMAP Level 2 Land Use Data by Phase IV Watershed 36
Model Segment
7 Corrected 1990 EMAP Level 2 Land Use Data Aggregated in Final 39
Database Categories
8 Chesapeake Bay Program Land Use by Phase IV Chesapeake Bay 42
Watershed Model Segment
9 Phase IV Watershed Model Land Use Classification 56
10 Land Use Classification, by Major Basins of the Chesapeake Bay 61
Watershed
11 Patapsco Basin - Phase IV 65
12 Phase IV Chesapeake Bay Watershed Model Land Use Estimation and 68
Projections Methodologies
13 Comparison of 1985 Phase II and 1985 Phase IV Watershed Model 91
Land Use Data
14 Manure Acres by Phase IV Chesapeake Bay Watershed Model Segment 93
IV
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Section Page
15 Phase IV Chesapeake Bay Watershed Model Below Fall Line Subsegments 98
And Chesapeake Bay Water Quality Model Cell Linkage
16 Chesapeake Bay Water Quality Model Cells Identified as Potential 113
SAV Habitat
17 Phase IV Chesapeake Bay Watershed Model and Regional Acid 123
Deposition Model Linkage
18 Atmospheric Deposition of Nutrients 134
19 Clean Air Act (CAA), Ozone Transport Commission (OTC), and 137
2005 Limit of Technology (LOT) Reduction in Nitrogen
Deposition to the Chesapeake Bay Watershed
-------
List of Figures
Figure Page
E. 1.1 Phase II Model Segments in the Chesapeake Bay Watershed Model 2
E. 1.2 Phase IV Model Segments in the Chesapeake Bay Watershed Model 3
E. 1.3 Chesapeake Bay Watershed Model Phase IV Watershed Model 4
Segmentation Above Fall Line Model Segments
E. 1.4 Chesapeake Bay Watershed Model Phase IV Watershed Model 5
Segmentation Below Fall Line Model Segments
E.2.1 State and County Boundaries in Chesapeake Bay Watershed Phase 7
IV Model Segments: Susquehanna River Basin
E.2.2 State and County Boundaries in Chesapeake Bay Watershed Phase 8
IV Model Segments: Potomac River Basin - Above Fall Line
E.2.3 State and County Boundaries in Chesapeake Bay Watershed Phase 9
IV Model Segments: Potomac River Basin - Below Fall Line
E.2.4 State and County Boundaries in Chesapeake Bay Watershed Phase 10
IV Model Segments: James River Basin - Above Fall Line
E.2.5 State and County Boundaries in Chesapeake Bay Watershed Phase 11
IV Model Segments: James River Basin - Below Fall Line
E.2.6 State and County Boundaries in Chesapeake Bay Watershed Phase 12
IV Model Segments: Rappahannock River Basin - Above and
Below Fall Line
E.2.7 State and County Boundaries in Chesapeake Bay Watershed Phase 13
IV Model Segments: Patuxent River Basin - Above and Below
Fall Line
E.2.8 State and County Boundaries in Chesapeake Bay Watershed Phase 14
IV Model Segments: York River Basin - Above and Below Fall Line
VI
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Figure Page
E.2.9 State and County Boundaries in Chesapeake Bay Watershed Phase 15
IV Model Segments: Western Shore Maryland - Above and Below
Fall Line
E.2.10 State and County Boundaries in Chesapeake Bay Watershed Phase 16
IV Model Segments: Eastern Shore Maryland
E.2.11 State and County Boundaries in Chesapeake Bay Watershed Phase 17
IV Model Segments: Western Shore Virginia
E.2.12 State and County Boundaries in Chesapeake Bay Watershed Phase 18
IV Model Segments: Eastern Shore Virginia
E.8.1 Chesapeake Bay Program Land Use in the Chesapeake Bay 46
Watershed with Phase IV Watershed Model Segments
E.8.2 High Intensity Urban Land Use in the Chesapeake Bay Watershed 47
with Phase IV Watershed Model Segments
E.8.3 Low Intensity Urban Land Use in the Chesapeake Bay Watershed 48
with Phase IV Watershed Model Segments
E.8.4 Herbaceous Urban Land Use in the Chesapeake Bay Watershed 49
with Phase IV Watershed Model Segments
E.8.5 Woody Urban Land Use in the Chesapeake Bay Watershed 50
with Phase IV Watershed Model Segments
E.8.6 Exposed Land Use in the Chesapeake Bay Watershed with 51
Phase IV Watershed Model Segments
E.8.7 Woody Land Use in the Chesapeake Bay Watershed with 52
Phase IV Watershed Model Segments
E.8.8 Herbaceous Land Use in the Chesapeake Bay Watershed with 53
Phase IV Watershed Model Segments
vn
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Figure Page
E.8.9 Herbaceous Wetland Land Use in the Chesapeake Bay Watershed 54
with Phase IV Watershed Model Segments
E.8.10 Water Land Use in the Chesapeake Bay Watershed with Phase IV 55
Watershed Model Segments
E.I 0.1 Major Basins of the Chesapeake Bay Watershed with Phase IV 62
Watershed Model Segments
E. 11.1 Patapsco River Basin Phase IV Watershed Model Segments 66
Chesapeake Bay Watershed
E.I 1.2 Patapsco Basin Segmentation - Phase II and Phase IV 67
E. 15.1 Below Fall Line Model Subsegments 100
E. 15.2 Tributary Model Cells 101
E. 15.3 Phase IV Watershed Model Subsegments and Tributary Model Cells 102
E. 17.1 Regional Acid Deposition Model (RADM) Grids Domain 124
E. 17.2 Regional Acid Deposition Model 20x20 km Grid Cells Which 125
Overlay in the Chesapeake Bay Basin
E. 17.3 Regional Acid Deposition Model 20x20 km Grid, Phase IV 126
Watershed Model Segments and Chesapeake Bay Water Quality Cells
vni
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List of Tables
Table Page
E.3.1 Counties Sorted by Phase IV Chesapeake Bay Watershed 20
Model Segment
E.3.2 Percent of Each Phase IV Chesapeake Bay Watershed Model 30
Segment by Chesapeake Basin State
E.4.1 Watershed Model Land Uses for Phase II Watershed Model 31
Segmentation in Acres
E.5.1 Original EMAP Land Use Data Sorted by Phase IV Chesapeake 34
Bay Watershed Model Segments in Acres
E.6.1 Percentage of Phase IV Chesapeake Bay Watershed Model Segment 36
Unassigned for EMAP Level 2 Land Use
E.6.2 Corrected 1990 EMAP Land Use Data Sorted by Phase IV 37
Chesapeake Bay Watershed Model Segments in Acres
E.7.1 Aggregated EMAP Land Use data, Sorted by Model Segments 40
in Acres
E.8.1 Chesapeake Bay Program Land Use in Acres by Phase IV Watershed 44
Model Segment
E.9.1 Phase IV Chesapeake Bay Watershed Model Land Use in Acres 59
by Model Segment
E. 10.1 Phase IV Chesapeake Bay Watershed Model Land Use Sorted by 63
the Ten Major Sub-basinsins' Data (in acres)
E. 11.1 Phase IV Watershed Model Land Use for Above Fall Line Phase IV 65
Watershed Model Segments - Patapsco River Basin
E. 12.1 Phase IV Chesapeake Bay Watershed Model Hindcasted 1985 Land Use 71
IX
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Table Page
E. 12.2 Phase IV Chesapeake Bay Watershed Model Land Use for the 72
"All Forested Watershed - Signatory Jurisdictions" Scenario for the
Area of Model Segments within Non-Signatory States
E.I2.3 Phase IV Chesapeake Bay Watershed Model Land Use for the 73
"All Forested Watershed - Signatory Jurisdictions" Scenario for the
Area of Model Segments within Signatory States
E. 12.4 Phase IV Chesapeake Bay Watershed Model Forecasted 1991 Land Use 75
E.I2.5 Phase IV Chesapeake Bay Watershed Model Forecasted 1993 Land Use 77
E. 12.6 Phase IV Chesapeake Bay Watershed Model Forecasted 1995 Land Use 79
E. 12.7 Phase IV Chesapeake Bay Watershed Model Forecasted 2000 Land Use 81
E.12.8 Phase IV Chesapeake Bay Watershed Model Forecasted 2005 Land Use 83
E. 12.9 Phase IV Chesapeake Bay Watershed Model Forecasted 2010 Land Use 85
E. 12.10 Phase IV Chesapeake Bay Watershed Model Forecasted 2015 Land Use 87
E. 12.11 Phase IV Chesapeake Bay Watershed Model Forecasted 2020 Land Use 89
E. 13.1 Percent Change Between Phase IV and Phase II Watershed Model 91
Land Use with Respect to Phase IV Land Use Values
E.I 4.1 Estimated Quantities of Voided Manure from Livestock and Poultry 93
E.I4.2 Distribution of TN from Manure for Each Segment in the Calculation 94
of the Mass Balance of Manure for the Watershed Model
E.I4.3 Phase IV Chesapeake Bay Watershed Model Manure Acres by Model 96
Segment 1985-2000
E.I5.1 Phase IV Watershed Model Segments and Their Corresponding 103
Cells and Loading Factors
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Table Page
E. 16.1 Chesapeake Bay Water Quality Model Cells Identified as Potential 116
SAV Habitat Within Which the Littoral Zone SAV Sub-model
Will Be Run
E. 17.1 Watershed Model Segments and Regional Acid Deposition 127
Model Cells
E. 18.1 NADP Sites In and Around the Chesapeake Bay Watershed 136
E. 19.1 High Resolution RADM Annual Total Nitrogen Deposition 138
Averaged Over Watershed Segments (CAA)
E. 19.2 High Resolution RADM Annual Total Nitrogen Deposition 139
Averaged Over Watershed Segments (OTC)
E. 19.3 High Resolution RADM Annual Total Nitrogen Deposition (LOT) 140
XI
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Section E.I
Phase II and Phase IV Watershed Model Segmentation, Above and Below Fall Line
For watershed modeling purposes, the Chesapeake Bay basin was divided into 63 model
segments in 1992 as part of the development of Phase II the Chesapeake Bay Watershed
Model (Figure E.I.I)1. The original phase II segmentation was based on a combination of
USGS hydrologic unit boundaries, NOAA shore line data for the Bay, location of water
quality gauging stations, and the aggregation of relatively homogeneous
hydrologic/topographic regions. For more detailed documentation on the approach taken in
the development of this model please refer to the "Chesapeake Bay Program Watershed
Model Application to Calculate Bay Nutrient Loadings."2
In Phase IV, the Bay Program Watershed Model was strategically increased from 63 to
87 model segments. The increased segmentation was designed to give higher resolution to
areas of high nutrient loadings such as the Lancaster area of the Susquehanna. The new
model segmentation also increased resolution in areas such as reservoirs and increased access
to observed monitoring data. Forty-four of the Phase IV model segments are classified as
the above fall line (Figure E.I .3.), and the remaining forty-three are below fall line segments
(Figure E.I .4). Above and below fall line segmentation is important to the simulation of
water quality and loading transport to the Bay. Simulation of land use loads and river
transport water quality is performed for the above fall line segments, while only land use
loads are simulated for the below fall line segments.
1 Donigian, A., Linker, L., Chang, C., and Carsel, R., Chesapeake Bay Program: Watershed Model
Application to Calculate Bay Nutrient Loadings, Final Findings and Recommendations, Chesapeake Bay
Program Office, US EPA Region III, Annapolis, MD, 21403, July 1994, CBP/TRS 157/96, EPA 903-R-94-
042
2 ibid.
-------
Figure E. 1.1
Phase II Model Segments in the
Chesapeake Bay Watershed Model
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C.DE
WVANDVA
KJH Map Dag April. 1997 /srv7/khopkiiis/iiiaps/appaidiitt/pp2im.iK
Source: Chesapeake Bay Program Modeling Team
-------
Figure E. 1.2
Phase IV Model Segments in the
Chesapeake Bay Watershed Model
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C..DE.
WVANDVA
KJH Map Dale: April. 1997 /stv7/HiO|)lciiB/iiiaps/itipaidixi^pp4ms2.ps
Source: Chesapeake Bay Program Modeling Team
-------
Figure E.I.3
Chesapeake Bay Watershed Model
Phase IV Watershed Model Segmentation
Above Fall Line Model Segments
LOCATION MAP OF THE
ABOVE FALL LINE PORTION
of the Chesapeake Bay Watershed
NY.PA,MD.D.C,De
WVANDVA
KIH Map Dae April. 1997 /srv7/thopkins/roaps/pt>»msan.ps
Source: Chesapeake Bay Program Modeling Team
-------
FigureE.1.4
Chesapeake Bay Watershed Model
Phase IV Watershed Model Segmentation
Below Fall Line Model Segments
LOCATION MAP OF THE
BELOW FALL LINE PORTION
of the Chesapeake Bay Watershed
NY.PA.MD.D.C..DE
WVANDVA
KJH My Dag April. 1997 /sn'7/khof kinVinyVpp4msbn.ps
Source: Chesapeake Bay Program Modeling Team
-------
Section E.2
Model Segments, State Boundaries and County Boundaries
The county boundaries are the standard political divisions of New York, Pennsylvania,
Delaware, Maryland, Virginia, West Virginia, and Washington D.C. Polygon GIS coverages
of the county boundaries and Phase IV Watershed Model segments were overlaid. In the
counties with shoreline boundaries, the Phase IV model segment coverage shoreline was
more accurate than the county coverage shoreline so the model coverage was used to
determine shoreline. Remaining county boundaries were determined from the county
coverages. The overlay was done to obtain proportional county contribution to the
Watershed Model segment area which is used to allocate load values to the different state
jurisdictions.
The state and county boundaries overlaid on the Phase IV Chesapeake Bay Watershed
Model are presented by ten major tributary basins for both above and below fall line model
segments (Figures E.2.1 - E.2.12).
-------
Figure E.2.1
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Susquehanna River Basin
SUSQUEHANNA RIVER BASIN
OF THE
CHESAPEAKE BAY WATERSHED
CHEMUNG V TIOGA
f\j Model Segment Boundary
/V County Boundary
,*y State Boundary
MD
AFL Model Segments: 10, 20, 30,40, 50, 60, 70,
80, 90,100,110,120,140,700,710, and 720
0»cMpa*cft
KJH Map Date: April. 1997 /srv7/kfaopkinVni3pVappmdi3tc/pscgoostisque.I» ,
Sources: USGS and Chesapeake Bay Program Modeling Team
-------
Figure E.2.2
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Potomac River Basin-
Above Fall Line
PA
POTOMAC RIVER BASN-AFL
OF THE
CHESAPEAKE BAY WATERSHED
Model Segment Boundary
/V County Boundary
/"y* State Boundary
AFL Model Segments: 160,170, 175, 180, 190, 200,
210, 220,730, 740, and 750
KJH My Dale Apiil. 1997 /^7/Uiopkiiiahaps/«i|ig»lUe>psegcoiiiiBaa.ps
Souices: USGS and Chesapeake Bay Program Modeling Team
-------
Figure E.2.3
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Potomac River Basin-
Below Fall Line
POTOMAC RIVER BASIN-BFL
OF THE
CHESAPEAKE BAY WATERSHED
Model Segment Boundary
County Boundary
State Boundary
VA
KJH My Cttc: April. 1997 /srv7/krK)pkiii^maps/appaKi«c/pscgcopniacfcfl.ps
•4-
BFL Model Segments: 540,550, 890, 900, 910, 920, 970, and 980 !
Sources: USGS and Chesapeake Bay Program Modeling Team
-------
Figure E.2.4
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
James River Basin-
Above Fall Line
wv
JAMES RIVER BASN-AFL
OFTHE
CHESAPEAKE BAY WATERSHED
Model Segment Boundary
/V County Boundary
/Y State Boundary
AFL Model Segments: 265, 270, 280, 290, 300, and 310
Km My PMC April. 1997 /^T/thopkiii^mysr^paidne^ggcoianBafl.^ Somces: USGS and Chesapeake Bay Program Modeling Team
10
-------
Figure E.2.5
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
James River Basin-
Below Fall Line
JAMES RIVER BASIN-BFL
OF THE
CHESAPEAKE BAY WATERSHED
Model Segment Boundary
/V County Boundary
/*/ State Boundary
BFL Model Segments: 600, 610, 620, 630
KM Mq»D«g April. 1997 /^T/kbopioiv^iwVypgidi^JpggcoBnieibn.ps Sources: USGS and Chesapeake Bay Program Modeling Team
11
-------
Figure E.2.6
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Rappahannock River Basin-
Above and Below Fall Line
Model Segment Boundary
/V County Boundary
/Y State Boundary
RAPPAHANNOCK RIVER BASIN
OF THE
CHESAPEAKE BAY WATERSHED
AFL Model Segments: 230
BFL Model Segments: 560
KM My DMe April. 1997
Sources: USGS and Chesapeake Bay Program Modeling Team
12
-------
Figure E.2.7
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Patuxent River Basin-
Above and Below Fall Line
PATUXENT RIVER BASIN
OF THE
CHESAPEAKE BAY WATERSHED
AFL Model Segments: 330 and 340
BFL Model Segments: 500, and 990
Model Segment Boundary
/V County Boundary
/y* State Boundary
Km My Dae April. 1997 /srv7/khopldiistoapsftOTakli«e/pscggip«u%.|g
Sources: USGS and Chesapeake Bay Program Modeling Team
13
-------
Figure E.2.8
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
York River Basin-
Above and Below Fall Line
YORK RIVER BASIN
OF THE
CHESAPEAKE BAY WATERSHED
Model Segment Boundary
/ County Boundary
/*'/ State Boundary
AFL Model Segments: 235, 240, 250, and 260
BFL Model Segments: 590
Km My Dae April. 1997
Sources: USGS and Chesapeake Bay Program Modeling Team
14
-------
Figure E.2.9
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Western Shore Maryland-
Above and Below Fall Line
WESTERN SHORE MARYLAND BASIN
OF THE
CHESAPEAKE BAY WATERSHED
l\f Model Segment Boundary
/V County Boundary
•\l State Boundary
PA
AFL Model Segments: 650, 760
BFL Model Segments: 470,480,490, 510,
850, 860, 870, and 880
KJH Map Dale April, 1997 /modgis/srv7/kbopkin^maps/appcDdijua^scgcow_sh_md.ps
Sources: USGS and Chesapeake Bay Program Modeling Team
15
-------
Figure E.2.10
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Eastern Shore Maryland
PA
l\f Model Segment Boundary
/V County Boundary
/*y* State Boundary
EASTERN SHORE MARYLAND BASIN
OF THE
CHESAPEAKE BAY WATERSHED
BFL Model Segments: 370,380, 390,400,410,420,430,
450, 770,780, 800, 810, 820, 830, and 840
KJH Map Dag April. 1997 /stv7
-------
Figure E.2.11
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Western Shore Virginia
/\/ Model Segment Boundary
/V County Boundary
/*/ State Boundary
WESTERN SHORE VIRGINIA BASIN
OF THE
CHESAPEAKE BAY WATERSHED
BFL Model Segments: 580,930,940, 950, and 960
KJH Map D»c April 1997 /»r7/Hioptaas/m^app
-------
Figure E.2.12
State and County Boundaries in
Chesapeake Bay Watershed
Phase IV Model Segments:
Eastern Shore Virginia
EASTERN SHORE VIRGINIA BASIN
OF THE
CHESAPEAKE BAY WATERSHED
Model Segment Boundary
County Boundary
*• State Boundary
KM Map Dag April. 1997
BFL Model Segments: 440
Sources: USGS and Chesapeake Bay Program Modeling Team
18
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Section E.3
Counties within the Chesapeake Bay Watershed by State and Segments
This section documents the total acres and percent area of each Chesapeake Basin
county by Phase IV Watershed Model segment. This information is used in allocating the
distribution of agricultural land, the calculation of manure acres per individual Watershed
Model Segments throughout the basin, and to the allocation of loading contribution to the
Chesapeake Bay by states and counties.
In order to convert county based data (such as Census of Agriculture data) into
Watershed Model segment based data, it was necessary to develop information about the
percent of county land within the segments (Table E.3.I.). For example, manure acres
calculations, as explained in section E.I4, used county based animal population numbers
from the Agricultural Census data. In order to determine animal population by Watershed
Model segment, it was assumed that the distribution of livestock was proportional to the land
area of each county within each model segments.
Regarding loading contribution (Table E.3.2.), the main purpose of this information
was to determine the amount of land by Watershed Model segment, within signatory and
non-signatory states. By overlaying the GIS coverages of the Phase IV Watershed
Model Segmentation, county boundaries and state boundaries, it was possible to
determine the percentage of county and state area within each Watershed Model Segment.
Included is a table of counties sorted by model segment (Table E.3.1.) and a table of
percent model segment in state (Table E.3.2.).
19
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
10 NY SUSQUEHANA RIVER BASIN
10 PA SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
10 PA SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
10 PA SUSQUEHANA RIVER BASIN
10 NY SUSQUEHANA RIVER BASIN
20 PA SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 PA SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 NY SUSQUEHANA RIVER BASIN
20 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
30 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
40 PA SUSQUEHANA RIVER BASIN
50 PA SUSQUEHANA RIVER BASIN
50 PA SUSQUEHANA RIVER BASIN
50 PA SUSQUEHANA RIVER BASIN
50 PA SUSQUEHANA RIVER BASIN
County
ALLEGANY
BRADFORD
CHEMUNG
LIVINGSTON
ONTARIO
POTTER
SCHUYLER
STEUBEN
TIOGA
TIOGA
YATES
BRADFORD
BROOME
CHEMUNG
CHENANGO
CORTLAND
DELAWARE
HERKIMER
MADISON
ONEIDA
ONONDAGA
OTSEGO
SCHOHARIE
SCHUYLER
SUSQUEHANNA
TIOGA
TOMPKINS
WAYNE
BRADFORD
LACKAWANNA
LUZERNE
LYCOMING
SULLIVAN
SUSQUEHANNA
TIOGA
WAYNE
WYOMING
COLUMBIA
LUZERNE
LYCOMING
MONTOUR
NORTHUMBERLAND
SCHUYLKILL
SNYDER
SULLIVAN
WYOMING
BLAIR
CAMBRIA
CENTRE
CLEARFIELD
20
Acres
of County
in Segment
54146.09
111733.03
204203.85
11546.26
1833.35
29921.09
56999.83
795983.01
562.58
416025.78
8734.53
63814.38
403505.75
35789.36
570429.99
297875.89
180802.85
59626.03
206452.41
32268.56
33657.5
631275.5
25806.32
26277.68
192278.42
333476.75
65198.73
20274.69
405006.07
254078.43
101104.28
1 140.97
18637.44
342518.26
5190.86
18132.54
254505.92
298036.34
392683.95
3514.16
31432.65
138557.12
54070.77
3434.65
29436.43
69.59
4760.34
197761.6
115017.58
551450.25
Total
Acres
In County
664613.45
741454.31
261969.55
410016.55
423859.21
692407.7
222814.02
896560.39
334039.36
725733.75
225027.13
741454.31
457344.51
261969.55
572179.99
320109.21
938322.49
930469.54
425709.94
804483.45
515084.21
648023.36
400134.14
222814.02
534796.65
334039.36
314640.7
481416.67
741454.31
295862.08
580118.27
797451^7
290265.13
534796.65
725733.75
481416.67
257991.69
313133.42
580118.27
797451.7
85380.66
305972.72
501037.83
212148.52
290265.13
257991.69
338911.14
446932.92
715119.02
740110.87
Percent
of County
in Segment
8%
15%
78%
3%
0%
4%
26%
89%
0%
57%
4%
9%
88%
14%
100%
93%
19%
6%
49%
4%
7%
97%
6%
12%
36%
100%
21%
4%
55%
86%
17%
0%
6%
64%
1%
4%
99%
95%
68%
0%
37%
45%
11%
2%
10%
0%
1%
44%
16%
75%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
50 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
60 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
70 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
80 PA SUSQUEHANA RIVER BASIN
90 PA SUSQUEHANA RIVER BASIN
90 PA SUSQUEHANA RIVER BASIN
90 PA SUSQUEHANA RIVER BASIN
90 PA SUSQUEHANA RIVER BASIN
90 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
County
INDIANA
BLAIR
BRADFORD
CAMERON
CENTRE
CLEARFIELD
CLINTON
ELK
HUNTINGDON
LYCOMING
MCKEAN
POTTER
SULLIVAN
TIOGA
UNION
BRADFORD
CENTRE
CLINTON
COLUMBIA
LYCOMING
MONTOUR
NORTHUMBERLAND
SNYDER
SULLIVAN
UNION
WYOMING
CENTRE
COLUMBIA
CUMBERLAND
DAUPHIN
FRANKLIN
JUNIATA
LEBANON
MIFFLIN
NORTHUMBERLAND
PERRY
SCHUYLKILL
SNYDER
UNION
BEDFORD
BLAIR
FULTON
HUNTINGDON
SOMERSET
BEDFORD
BLAIR
CAMBRIA
CENTRE
FRANKLIN
FULTON
Acres
of County
in Segment
45807.42
63.7
74.79
254039.17
399642.98
116906.09
575148.37
169746.87
233.92
486713.77
13879.17
401018.05
3643.56
301936.03
527.58
8332.42
7329.95
269.15
13135.69
306082.95
53948.15
70595.76
962.83
238547.45
146704.16
3416.12
139464.18
1961.45
234611.44
234036.3
88200.15
20288.55
9607.53
13574.62
96819.55
245352.29
118944.53
201470.99
55626.96
441588.87
8259.17
23809.41
111285.95
15396.55
18021.53
325818.04
1210.7
53664.95
20345.13
70562.08
Total
Acres
In County
533108.01
338911.14
741454.31
255045.08
715119.02
740110.87
575417.53
533879.74
569952.78
797451.7
629665.87
692407.7
290265.13
725733.75
202858.73
741454.31
715119.02
575417.53
313133.42
797451.7
85380.66
305972.72
212148.52
290265.13
202858.73
257991.69
715119.02
313133.42
350701.78
358224.08
495235.35
251444.31
230895.24
263655.82
305972.72
357583.61
501037.83
212148.52
202858.73
649484.52
338911.14
281156.82
569952.78
692933.23
649484.52
338911.14
446932.92
715119.02
495235.35
281156.82
Percent
of County
in Segment
9%
0%
0%
100%
56%
16%
100%
32%
0%
61%
2%
58%
1%
42%
0%
1%
1%
0%
4%
38%
63%
23%
0%
82%
72%
1%
20%
1%
67%
65%
18%
8%
4%
5%
32%
69%
24%
95%
27%
68%
2%
8%
20%
2%
3%
96%
0%
8%
4%
25%
21
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
100 PA SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 MD SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 MD SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
110 PA SUSQUEHANA RIVER BASIN
120 PA SUSQUEHANA RIVER BASIN
120 PA SUSQUEHANA RIVER BASIN
120 PA SUSQUEHANA RIVER BASIN
140 MD SUSQUEHANA RIVER BASIN
140 MD SUSQUEHANA RIVER BASIN
140 PA SUSQUEHANA RIVER BASIN
140 PA SUSQUEHANA RIVER BASIN
160 MD SUSQUEHANA RIVER BASIN
160 PA POTOMAC RIVER BASIN
160 MD POTOMAC RIVER BASIN
160 WV POTOMAC RIVER BASIN
160 WV POTOMAC RIVER BASIN
160 WV POTOMAC RIVER BASIN
160 WV POTOMAC RIVER BASIN
160 PA POTOMAC RIVER BASIN
170 MD POTOMAC RIVER BASIN
170 VA POTOMAC RIVER BASIN
170 WV POTOMAC RIVER BASIN
170 WV POTOMAC RIVER BASIN
170 WV POTOMAC RIVER BASIN
170 VA POTOMAC RIVER BASIN
170 WV POTOMAC RIVER BASIN
170 WV POTOMAC RIVER BASIN
170 VA POTOMAC RIVER BASIN
175 MD POTOMAC RIVER BASIN
175 PA POTOMAC RIVER BASIN
175 VA POTOMAC RIVER BASIN
175 PA POTOMAC RIVER BASIN
175 WV POTOMAC RIVER BASIN
175 WV POTOMAC RIVER BASIN
175 WV POTOMAC RIVER BASIN
175 VA POTOMAC RIVER BASIN
175 MD POTOMAC RIVER BASIN
180 PA POTOMAC RIVER BASIN
180 PA POTOMAC RIVER BASIN
County
HUNTINGDON
JUNIATA
MIFFLIN
PERRY
SNYDER
ADAMS
BALTIMORE
BERKS
CARROLL
CUMBERLAND
DAUPHIN
LANCASTER
LEBANON
SCHUYLKILL
YORK
CHESTER
LANCASTER
YORK
CECIL
HARFORD
LANCASTER
YORK
ALLEGANY
BEDFORD
GARRETT
GRANT
HAMPSHIRE
HARDY
MINERAL
SOMERSET
ALLEGANY
AUGUSTA
GRANT
HAMPSHIRE
HARDY
HIGHLAND
MINERAL
PENDLETON
ROCKINGHAM
ALLEGANY
BEDFORD
FREDERICK
FULTON
HAMPSHIRE
HARDY
MORGAN
SHENANDOAH
WASHINGTON
ADAMS
FRANKLIN
Acres
of County
in Segment
458432.77
231155.76
250080.97
111668.79
6280.09
172879.72
46.46
39625.85
5081 .94
114039.78
124187.79
35434.76
169022.94
86333.47
385779
5689.46
102191.06
21183
3526.54
30419.33
46998.07
95776.15
163842.5
85998.96
150297.97
159702.27
15958.46
1390.33
211029.9
76834.89
26.83
1701.74
152217.47
112821.12
165083.77
61360.24
0.4
449765.56
7409.79
106200.72
103814.49
3631.99
15911.44
283507.57
194246.99
66754.81
4170.21
27551.17
4886.6
62318.77
Total
Acres
In County
569952.78
251444.31
263655.82
357583.61
212148.52
333412.04
387776.03
555021.41
290981.62
350701.78
358224.08
628542.69
230895.24
501037.83
581372.52
484346.47
628542.69
581372.52
227936.53
281831.24
628542.69
581372.52
270070.13
649484.52
425686.19
311978.89
413447.78
374317.23
211030.3
692933.23
270070.13
646700.79
311978.89
413447.78
374317.23
260584.01
211030.3
451456.35
558280.97
270070.13
649484.52
272162.54
281156.82
413447.78
374317.23
147072.51
328798.76
298769.02
333412.04
495235.35
Percent
of County
in Segment
80%
92%
95%
31%
3%
52%
0%
7%
2%
33%
35%
6%
73%
17%
66%
1%
16%
4%
2%
11%
7%
16%
61%
13%
35%
51%
4%
0%
100%
11%
0%
0%
49%
27%
44%
24%
0%
100%
1%
39%
16%
1%
6%
69%
52%
45%
1%
9%
1%
13%
22
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
180
180
180
180
190
190
190
190
190
190
190
190
190
190
200
200
200
200
200
200
200
200
200
200
200
210
210
210
210
210
210
210
220
220
220
220
220
220
220
220
220
220
230
230
230
230
230
230
230
230
MD
WV
VA
MD
VA
VA
VA
VA
VA
VA
WV
VA
VA
VA
VA
VA
VA
WV
WV
VA
VA
VA
VA
VA
VA
PA
MD
PA
MD
MD
MD
MD
VA
VA
DC
VA
VA
MD
VA
MD
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
County
FREDERICK
JEFFERSON
LOUDOUN
WASHINGTON
ALBEMARLE
AUGUSTA
GREENE
MADISON
NELSON
PAGE
PENDLETON
RAPPAHANNOCK
ROCKINGHAM
WARREN
CLARKE
FAUQUIER
FREDERICK
HARDY
JEFFERSON
LOUDOUN
PAGE
RAPPAHANNOCK
ROCKINGHAM
SHENANDOAH
WARREN
ADAMS
CARROLL
FRANKLIN
FREDERICK
HOWARD
MONTGOMERY
WASHINGTON
ARLINGTON
CLARKE
DISTRICT OF COLU
FAIRFAX
FAUQUIER
FREDERICK
LOUDOUN
MONTGOMERY
PRINCE WILLIAM
WARREN
ALBEMARLE
CULPEPER
FAUQUIER
GREENE
MADISON
ORANGE
PAGE
RAPPAHANNOCK
23
Acres
of County
in Segment
92682.38
29777.39
79801.24
139884.33
2419.34
478026.9
1357.26
663.21
2581.08
188738.55
19.81
775.98
313809.44
51938.36
91091.76
1008.27
70680.81
13596.17
62776.67
3336.4
10722.95
12.44
236556.78
324628.72
86350.71
40769.63
133987.55
938.19
313543.16
76.1
23600.78
115.85
43.97
170.78
2076.8
74304.22
96716.26
18957.1
234696.63
183231.51
282.99
93.28
2860.06
244319.69
181834.53
39305.49
206050.25
127848.06
1069.73
170323.88
Total
Acres
In County
427139.67
135309.22
334104.42
298769.02
472700.17
646700.79
99941.66
206713.48
304069.9
200531.21
451456.35
171112.31
558280.97
139189.86
114232.85
417542.01
272162.54
374317.23
135309.22
334104.42
200531.21
171112.31
558280.97
328798.76
139189.86
333412.04
290981.62
495235.35
427139.67
162119.32
322768.46
298769.02
16841.59
114232.85
39668.82
257829.31
417542.01
427139.67
334104.42
322768.46
220739.02
139189.86
472700.17
244319.69
417542.01
99941.66
206713.48
219844.29
200531.21
171112.31
Percent
of County
in Segment
22%
22%
24%
47%
1%
74%
1%
0%
1%
94%
0%
0%
56%
37%
80%
0%
26%
4%
46%
1%
5%
0%
42%
99%
62%
12%
46%
0%
73%
0%
7%
0%
0%
0%
5%
29%
23%
4%
70%
57%
0%
0%
1%
100%
44%
39%
100%
58%
1%
100%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
230 VA RAPPAHANNOCK RIVER BASIN
230 VA RAPPAHANNOCK RIVER BASIN
230 VA RAPPAHANNOCK RIVER BASIN
230 VA RAPPAHANNOCK RIVER BASIN
2.35 VA RAPPAHANNOCK RIVER BASIN
235 VA YORK RIVER BASIN
235 VA YORK RIVER BASIN
240 VA YORK RIVER BASIN
240 VA YORK RIVER BASIN
240 VA YORK RIVER BASIN
240 VA YORK RIVER BASIN
240 VA YORK RIVER BASIN
250 VA YORK RIVER BASIN
250 VA YORK RIVER BASIN
250 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
260 VA YORK RIVER BASIN
265 VA YORK RIVER BASIN
265 VA JAMES RIVER BASIN
265 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 WV JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 WV JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
270 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
County
ROCKINGHAM
SPOTSYLVANIA
STAFFORD
WARREN
CAROLINE
ORANGE
SPOTSYLVANIA
CAROLINE
ESSEX
KING AND QUEEN
KING WILLIAM
SPOTSYLVANIA
LOUISA
ORANGE
SPOTSYLVANIA
ALBEMARLE
CAROLINE
FLUVANNA
GQOCHLAND
HANOVER
KING WILLIAM
LOUISA
ORANGE
SPOTSYLVANIA
ALLEGHANY
BATH
HIGHLAND
ALLEGHANY
AMHERST
AUGUSTA
BATH
BEDFORD
BOTETOURT
CRAIG
GILES
HIGHLAND
MONROE
MONTGOMERY
NELSON
PENDLETON
ROANOKE
ROCKBRIDGE
ALBEMARLE
AMHERST
APPOMATTOX
AUGUSTA
BEDFORD
BUCKINGHAM
CAMPBELL
CUMBERLAND
24
Acres
of County
in Segment
43.45
27511.03
24884.98
807.5
35078.07
2813.4
126522.98
189754.94
648.08
14134.97
4194.21
7145.98
95032.85
79175.15
39656.71
5311.59
32931.73
723.21
8063.63
172047.42
520.29
219194.39
3850.35
28732.16
7391.81
126730.97
89535.79
281043.09
90519.2
166597.23
212240.19
36869.45
313081.93
184543.58
7566.79
109673.4
45215.53
14828.95
1309.35
1654.47
20112.96
388645.8
462108.75
216803.82
92922.77
374.09
35200.56
353175.63
58670.13
93788.47
Total
Acres
In County
558280.97
268269.78
174557.02
139189.86
341607.71
219844.29
268269.78
341607.71
166168.36
203402.35
177415.02
268269.78
327162.24
219844.29
268269.78
472700.17
341607.71
186029.67
184294.55
303300.19
177415.02
327162.24
219844.29
268269.78
288450.36
339012
260584.01
288450.36
307323
646700.79
339012
498862.3
351141.76
211813.65
232531.63
260584.01
303626.34
251246.86
304069.9
451456.35
197831.97
388700.83
472700.17
307323
215228.01
646700.79
498862.3
374789.25
324315.22
191623.18
Percent
of County
in Segment
0%
10%
14%
1%
10%
1%
47%
56%
0%
7%
2%
3%
29%
36%
15%
1%
10%
0%
4%
57%
0%
67%
2%
11%
3%
37%
34%
97%
29%
26%
63%
7%
89%
87%
3%
42%
15%
6%
0%
0%
10%
100%
98%
71%
43%
0%
7%
94%
18%
49%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
280 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
290 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
300 VA JAMES RIVER BASIN
310 VA JAMES RIVER BASIN
310 VA JAMES RIVER BASIN
310 VA JAMES RIVER BASIN
310 VA JAMES RIVER BASIN
330 MD JAMES RIVER BASIN
330 MD PATUXENT RIVER BASIN
330 MD PATUXENT RIVER BASIN
340 MD PATUXENT RIVER BASIN
340 MD PATUXENT RIVER BASIN
340 MD PATUXENT RIVER BASIN
370 MD PATUXENT RIVER BASIN
370 DE EASTERN SHORE MARYLAND
380 DE EASTERN SHORE MARYLAND
380 MD EASTERN SHORE MARYLAND
380 DE EASTERN SHORE MARYLAND
380 MD EASTERN SHORE MARYLAND
390 MD EASTERN SHORE MARYLAND
390 MD EASTERN SHORE MARYLAND
400 MD EASTERN SHORE MARYLAND
400 MD EASTERN SHORE MARYLAND
400 DE EASTERN SHORE MARYLAND
400 MD EASTERN SHORE MARYLAND
400 MD EASTERN SHORE MARYLAND
410 MD EASTERN SHORE MARYLAND
410 MD EASTERN SHORE MARYLAND
County
FLUVANNA
GOOCHLAND
GREENE
LOUISA
LYNCHBURG
NELSON
ORANGE
ROCKBRIDGE
ROCKINGHAM
CHESTERFIELD
CUMBERLAND
GOOCHLAND
HANOVER
HENRICO
LOUISA
POWHATAN
RICHMOND CITY
AMELIA
APPOMATTOX
BUCKINGHAM
CHESTERFIELD
CUMBERLAND
NOTTOWAY
POWHATAN
PRINCE EDWARD
AMELIA
CHESTERFIELD
DINWIDDIE
NOTTOWAY
HOWARD
MONTGOMERY
PRINCE GEORGES
ANNE ARUNDEL
HOWARD
PRINCE GEORGES
CECIL
NEW CASTLE
KENT
KENT
NEWCASTLE
QUEEN ANNES
QUEEN ANNES
TALBOT
CAROLINE
DORCHESTER
KENT
QUEEN ANNES
TALBOT
CAROLINE
DORCHESTER
25
Acres
of County
in Segment
185306.14
39966.96
59279.14
11311.33
16496.2
300179.55
6157.46
55.04
462.43
9815.85
32452.47
136258.58
197.86
22833.89
1623.87
124175.9
2000.23
215874.86
62837.27
21613.65
32477.47
65382.21
103209.24
40630.99
222453.66
13383.82
30845.38
49531.83
7398.17
41762.82
41992.46
1334.22
37016.33
75156.34
25328.11
30257.02
7568.65
19080.04
106148.88
7336.64
132612.11
37044.13
20486.13
147241.15
29651.81
14442.74
41838.96
68134.64
38368.48
65988.19
Total
Acres
In County
186029.67
184294.55
99941.66
327162.24
16496.2
304069.9
219844.29
388700.83
558280.97
281840.21
191623.18
184294.55
303300.19
153992.75
327162.24
169873.73
39758.69
229258.48
215228.01
374789.25
281840.21
191623.18
203015.7
169873.73
227218.79
229258.48
281840.21
323857.96
203015.7
162119.32
322768.46
311089.96
270586.03
162119.32
311089.96
227936.53
285654.12
382698.46
181952.57
285654.12
240850.08
240850.08
175898.74
205310.23
372730.67
382698.46
240850.08
175898.74
205310.23
372730.67
Percent
of County
in Segment
100%
22%
59%
3%
100%
99%
3%
0%
0%
3%
17%
74%
0%
15%
1%
73%
5%
94%
29%
6%
12%
34%
51%
24%
98%
6%
11%
15%
4%
26%
13%
0%
14%
46%
8%
13%
3%
5%
58%
3%
55%
15%
12%
72%
8%
4%
17%
39%
19%
18%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE VIRGINIA
EASTERN SHORE VIRGINIA
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
EASTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
PATUXENT RIVER BASIN
PATUXENT RIVER BASIN
PATUXENT RIVER BASIN
PATUXENT RIVER BASIN
PATUXENT RIVER BASIN
WESTERN SHORE MARYLAND
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
RAPPAHANNOCK RIVER BASIN
RAPPAHANNOCK RIVER BASIN
410
410
410
420
420
420
420
430
430
430
430
430
430
440
440
450
450
450
450
450
450
470
470
470
470
480
480
490
490
490
490
500
500
500
500
500
510
540
540
540
550
550
550
550
550
550
550
560
560
560
DE
DE
MD
MD
DE
MD
MD
VA
MD
MD
DE
MD
MD
VA
VA
MD
MD
PA
MD
PA
PA
MD
MD
MD
PA
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
DC
MD
MD
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
County
KENT
SUSSEX
WICOMICO
SOMERSET
SUSSEX
WICOMICO
WORCESTER
ACCOMACK
DORCHESTER
SOMERSET
SUSSEX
WICOMICO
WORCESTER
ACCOMACK
NORTHAMPTON
BALTIMORE
CECIL
CHESTER
HARFORD
LANCASTER
YORK
BALTIMORE
CARROLL
HARFORD
YORK
BALTIMORE
BALTIMORE CITY
ANNE ARUNDEL
BALTIMORE
BALTIMORE CITY
HOWARD
ANNE ARUNDEL
CALVERT
CHARLES
PRINCE GEORGES
ST MARYS
ANNE ARUNDEL
DISTRICT OF COLU
MONTGOMERY
PRINCE GEORGES
FAIRFAX
FAUQUIER
LOUDOUN
MANASSAS
MANASSAS_PARK
PRINCE WILLIAM
STAFFORD
CAROLINE
ESSEX
FREDERICKSBURG
26
Acres
of County
in Segment
40725.6
234320.65
83750.63
38836.55
1262.4
96074.82
426.67
24673.25
211.11
175867.9
27119.53
63062.85
187077.63
136745.25
68612.04
7724.88
117407.79
84634.67
171257.33
70495.82
17933.45
237204.88
22624.34
25222.16
5837.7
51613.98
27429.04
56673.07
17395.01
5537.55
19655.92
43059.1
98787.98
16831.63
130286.69
44919.67
30279.68
9768.31
37372.8
56591.28
68739.8
135436.7
16270.12
3762.12
1845.67
174754.75
24.04
76242.28
148417.7
3956.68
Total
Acres
In County
382698.46
602608.31
242888.02
214704.4
602608.31
242888.02
291784
304435
372730.67
214704.4
602608.31
242888.02
291784
304435
144601
387776.03
227936.53
484346.47
281831.24
628542.69
581372.52
387776.03
290981.62
281831.24
581372.52
387776.03
52406.62
270586.03
387776.03
52406.62
162119.32
270586.03
139558.19
295487.14
311089.96
236144.01
270586.03
39668.82
322768.46
311089.96
257829.31
417542.01
334104.42
3762.12
1845.67
220739.02
174557.02
341607.71
166168.36
3956.68
Percent
of County
in Segment
11%
39%
34%
18%
0%
40%
0%
8%
0%
82%
5%
26%
64%
45%
47%
2%
52%
17%
61%
11%
3%
61%
8%
9%
1%
13%
52%
21%
4%
11%
12%
16%
71%
6%
42%
19%
11%
25%
12%
18%
27%
32%
5%
100%
100%
79%
0%
22%
89%
100%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
560 VA RAPPAHANNOCK RIVER BASIN
580 VA RAPPAHANNOCK RIVER BASIN
580 VA WESTERN SHORE MARYLAND
580 VA WESTERN SHORE MARYLAND
590 VA WESTERN SHORE MARYLAND
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
590 VA YORK RIVER BASIN
600 VA YORK RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
600 VA JAMES RIVER BASIN
610 VA JAMES RIVER BASIN
610 VA JAMES RIVER BASIN
610 VA JAMES RIVER BASIN
610 VA JAMES RIVER BASIN
610 VA JAMES RIVER BASIN
610 VA JAMES RIVER BASIN
620 VA JAMES RIVER BASIN
620 VA JAMES RIVER BASIN
620 VA JAMES RIVER BASIN
County
KING AND QUEEN
KING GEORGE
LANCASTER
MIDDLESEX
NORTHUMBERLAND
RICHMOND
SPOTSYLVANIA
STAFFORD
WESTMORELAND
LANCASTER
NORTHUMBERLAND
RICHMOND
CAROLINE
ESSEX
GLOUCESTER
HANOVER
JAMES CITY
KING AND QUEEN
KING WILLIAM
NEW KENT
WILLIAMSBURG
YORK
CHARLES CITY
CHESTERFIELD
COLONJAL HEIGHTS
DINWIDDIE
HAMPTON
HENRICO
ISLE OF WIGHT
JAMES CITY
NEW KENT
NEWPORT NEWS
NORFOLK
PETERSBURG
POWHATAN
PRINCE GEORGE
RICHMOND CITY
SUFFOLK
SURRY
WILLIAMSBURG
YORK
CHARLES CITY
GOOCHLAND
HANOVER
HENRICO
NEW KENT
RICHMOND CITY
CHESAPEAKE
ISLE OF WIGHT
PORTSMOUTH
27
Acres
of County
in Segment
713.79
41171.72
74590.1
49658.81
1628.25
123838.43
38701.62
25889.11
41154.49
531.55
40708.05
175.68
7600.32
783.08
48737.62
87132.36
21263.61
142664.27
172700.47
64149.41
1430.32
42234.38
106746.9
208701.45
1681.29
9790.74
7138.62
54074.49
68649.86
75326.91
49428.42
40290.27
31.05
4942.35
5066.88
92030.37
35998.83
8879
75971.7
1864.19
7806.84
12556.5
5.46
43922.55
77084.42
23322.11
1759.64
773.5
30467.09
6708.05
Total
Acres
In County
203402.35
115259.57
87878.88
85729.11
127889.76
124195.86
268269.78
174557.02
148910.28
87878.88
127889.76
124195.86
341607.71
166168.36
143215.31
303300.19
96590.53
203402.35
177415.02
136899.91
3294.5
81774.41
119303.45
281840.21
1681.29
323857.96
34140.69
153992.75
203826.97
96590.53
136899.91
44722.14
34373.52
4942.35
169873.73
171218.9
39758.69
261344.7
178071.47
3294.5
81774.41
119303.45
184294.55
303300.19
153992.75
136899.91
39758.69
221251.38
203826.97
21971.39
Percent
of County
in Segment
0%
36%
85%
58%
1%
100%
14%
15%
28%
1%
32%
0%
2%
0%
34%
29%
22%
70%
97%
47%
43%
52%
89%
74%
100%
3%
21%
35%
34%
78%
36%
90%
0%
100%
3%
54%
91%
3%
43%
57%
10%
11%
0%
14%
50%
17%
4%
0%
15%
31%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
620 VA JAMES RIVER BASIN
630 VA JAMES RIVER BASIN
630 VA JAMES RIVER BASIN
630 VA JAMES RIVER BASIN
650 MD JAMES RIVER BASIN
650 MD WESTERN SHORE MARYLAND
700 PA WESTERN SHORE MARYLAND
700 PA SUSQUEHANA RIVER BASIN
710 PA SUSQUEHANA RIVER BASIN
710 PA SUSQUEHANA RIVER BASIN
710 PA SUSQUEHANA RIVER BASIN
720 PA SUSQUEHANA RIVER BASIN
720 PA SUSQUEHANA RIVER BASIN
720 PA SUSQUEHANA RIVER BASIN
720 PA SUSQUEHANA RIVER BASIN
730 PA SUSQUEHANA RIVER BASIN
730 PA POTOMAC RIVER BASIN
730 PA POTOMAC RIVER BASIN
730 PA POTOMAC RIVER BASIN
730 PA POTOMAC RIVER BASIN
730 MD POTOMAC RIVER BASIN
740 WV POTOMAC RIVER BASIN
740 VA POTOMAC RIVER BASIN
740 PA POTOMAC RIVER BASIN
740 VA POTOMAC RIVER BASIN
740 PA POTOMAC RIVER BASIN
740 WV POTOMAC RIVER BASIN
740 WV POTOMAC RIVER BASIN
740 WV POTOMAC RIVER BASIN
740 MD POTOMAC RIVER BASIN
750 PA POTOMAC RIVER BASIN
750 MD POTOMAC RIVER BASIN
750 MD POTOMAC RIVER BASIN
760 MD POTOMAC RIVER BASIN
760 MD WESTERN SHORE MARYLAND
760 MD WESTERN SHORE MARYLAND
760 MD WESTERN SHORE MARYLAND
770 MD WESTERN SHORE MARYLAND
770 DE EASTERN SHORE MARYLAND
770 MD EASTERN SHORE MARYLAND
780 DE EASTERN SHORE MARYLAND
780 DE EASTERN SHORE MARYLAND
800 MD EASTERN SHORE MARYLAND
800 DE EASTERN SHORE MARYLAND
810 MD EASTERN SHORE MARYLAND
810 MD EASTERN SHORE MARYLAND
810 DE EASTERN SHORE MARYLAND
820 MD EASTERN SHORE MARYLAND
830 MD EASTERN SHORE MARYLAND
840 MD EASTERN SHORE MARYLAND
County
SUFFOLK
CHESAPEAKE
PORTSMOUTH
SUFFOLK
BALTIMORE
CARROLL
BRADFORD
TIOGA
LANCASTER
LEBANON
YORK
BERKS
CHESTER
LANCASTER
LEBANON
ADAMS
CUMBERLAND
FRANKLIN
FULTON
PERRY
WASHINGTON
BERKELEY
CLARKE
FRANKLIN
FREDERICK
FULTON
HAMPSHIRE
JEFFERSON
MORGAN
WASHINGTON
ADAMS
CARROLL
FREDERICK
BALTIMORE
CARROLL
FREDERICK
HOWARD
CAROLINE
KENT
QUEEN ANNES
KENT
SUSSEX
CECIL
NEWCASTLE
CECIL
KENT
NEWCASTLE
QUEEN ANNES
TALBOT
DORCHESTER
28
Acres
of County
in Segment
89471.17
10534.25
6586.93
249.83
13172.34
86578.4
152493.75
2581.07
85657.9
5733.02
54863.28
19450.5
3316.21
268915.38
12108.7
15272.02
2050.44
299683.17
35.46
562.51
1265.7
205945.69
22970.22
23749.7
197849.65
170838.42
1160.32
42755.29
80317.84
129952.13
99604.16
5744.61
1956.99
51060.69
36981.62
938.01
30349.7
19700.61
49211.01
2488.99
6864.81
38543.13
42735.05
8268.53
27917.9
75803.7
4286.09
26865.88
87278
276879.55
Total
Acres
In County
261344.7
221251.38
21971.39
261344.7
387776.03
290981.62
741454.31
725733.75
628542.69
230895.24
581372.52
555021.41
484346.47
628542.69
230895.24
333412.04
350701.78
495235.35
281156.82
357583.61
298769.02
205945.69
114232.85
495235.35
272162.54
281156.82
413447.78
135309.22
147072.51
298769.02
333412.04
290981.62
427139.67
387776.03
290981.62
427139.67
162119.32
205310.23
382698.46
240850.08
382698.46
602608.31
227936.53
285654.12
227936.53
181952.57
285654.12
240850.08
175898.74
372730.67
Percent
of County
in Segment
34%
5%
30%
0%
3%
30%
21%
0%
14%
2%
9%
4%
1%
43%
5%
5%
1%
61%
0%
0%
0%
100%
20%
5%
73%
61%
0%
32%
55%
44%
30%
2%
0%
9%
13%
0%
19%
10%
13%
1%
2%
6%
19%
3%
12%
42%
2%
11%
50%
74%
-------
Table E.3.1
Counties Sorted by Phase IV Chesapeake Bay Watershed Model Segment
Phase IV State Chesapeake Bay Watershed
Model Subbasin
Segment
EASTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
WESTERN SHORE MARYLAND
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
WESTERN SHORE VIRGINIA
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
POTOMAC RIVER BASIN
PATUXENT RIVER BASIN
850
860
860
870
880
880
890
890
900
900
900
900
910
910
910
920
920
920
930
930
940
940
940
940
940
950
950
950
960
960
960
960
970
970
980
980
980
980
980
980
980
990
990
MD
MD
MD
MD
MD
MD
DC
MD
VA
VA
VA
VA
MD
DC
MD
MD
MD
MD
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
VA
MD
MD
County
HARFORD
BALTIMORE
BALTIMORE CITY
ANNEARUNDEL
ANNEARUNDEL
CALVERT
DISTRICT OF COLU
MONTGOMERY
ALEXANDRIA
ARLINGTON
FAIRFAX
FALLS CHURCH
CHARLES
DISTRICT OF COLU
PRINCE GEORGES
CHARLES
PRINCE GEORGES
ST MARYS
LANCASTER
NORTHUMBERLAND
ESSEX
GLOUCESTER
KING AND QUEEN
MATHEWS
MIDDLESEX
HAMPTON
NEWPORT NEWS
YORK
CHESAPEAKE
NORFOLK
PORTSMOUTH
VIRGINIA BEACH
PRINCE WILLIAM
STAFFORD
FAUQUIER
KING GEORGE
NORTHUMBERLAND
PRINCE WILLIAM
RICHMOND
STAFFORD
WESTMORELAND
CALVERT
ST MARYS
Acres
of County
in Segment
54930.51
39742.26
19440.35
27259.9
76242.85
39211.95
21444.1
36570.94
9671 .49
16797.67
114785.25
1277.57
61615.2
6379.69
93087.11
217040.2
4462.58
171804.53
12757.21
19042.51
16319.5
94477.7
45889.32
57905.12
36070.31
27002.08
4431.86
31733.19
42180.3
34342.47
8676.4
56206.43
36573.57
153.72
2546.35
74087.87
66510.99
9127.71
181.73
123604.98
107755.8
1558.41
19419.76
Total
Acres
In County
281831.24
387776.03
52406.62
270586.03
270586.03
139558.19
39668.82
322768.46
9671.47
16841.59
257829.31
1277.57
295487.14
39668.82
311089.96
295487.14
311089.96
236144.01
87878.88
127889.76
166168.36
143215.31
203402.35
57905.12
85729.11
34140.69
44722.14
81774.41
221251.38
34373.52
21971.39
127006.86
220739.02
174557.02
417542.01
115259.57
127889.76
220739.02
124195.86
174557.02
148910.28
139558.19
236144.01
Percent
of County
in Segment
19%
10%
37%
10%
28%
28%
54%
11%
100%
100%
45%
100%
21%
16%
30%
73%
1%
73%
15%
15%
10%
66%
23%
100%
42%
79%
10%
39%
19%
100%
39%
44%
17%
0%
1%
64%
52%
4%
0%
71%
72%
1%
8%
29
-------
Table E.3.2
Percent of Each Phase IV Chesapeake Bay Watershed Model Segment by Chesapeake Basin State
Segm. NY PA MD DC VA WV DE Segm. NY PA
MD
DC
VA
WV
DE
10 66.80 33.20 0.00 0.00 0.00 0.00
0.00
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
720
730
740
750
760
770
91.30
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
8.70
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
99.50
100.00
80.00
18.80
0.00
14.70
16.30
0.00
0.00
8.10
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
36.30
1.90
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0,
0.00
0.00
0.00
0.00
0.00
100.00
100.00
100.00
0.00
9.70
92.60
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.50
0.00
20.00
36.60
0.00
16.40
56.90
0.00
0.00
• 91.90
33.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
100.00
100.00
77.90
89.30
100.00
94.90
40.30
99.50
89.50
0.00
63.70
98.10
100.00
100.00
100.00
100.00
100.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
100.00
0.00
0.00
0.00
100.00
15.30
7.40
100.00
28.70
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.34
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
9.4
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
5.80
0.00
19.50
100.00
92.70
0.00
67.00
100.00
100.00
100.00
100.00
100.00
100.00
97.50
100.00
100.00
100.00
100.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
5.10
100.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
0.00
0.00
0.00
0.00
0.00
37.50
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
44.60
94.20
68.90
7.30
0.00
7.30
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2.50
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
37.50
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0,0
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
22.10
10.70
0.00
5.10
59.70
0.50
5.40
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
71.30
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
81.90
95.10
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
0.00
100.00
100.00
0.00
0.00
0.00
0.00
0.00
0.00
100.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
36.33
0.00
3.94
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
100.00
0.00
0.00
100.00
100.00
100.00
100.00
100.00
100.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
100.00
18.10
4.90
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
30
-------
Section E.4
Phase II Watershed Model Land Use by Model Segment.
In Phase II of the Watershed Model, land use data for 1985 were initially developed with
statistical information from the 1982 Agricultural Censuses conducted by the U.S. Census
Bureau, surveys conducted by the U.S. Forest Service (various years), and information
obtained from the Conservation Technology Information Center (CTIC) for the 1985 year.
Most of the agricultural and forest data was at the county level of aggregation. The data
were then reviewed by the appropriate state or county offices of the USDA Soil
Conservation Service and other appropriate state and county offices for revision and/or
confirmation. The final 1985 land use database was agreed to by the CBP agencies after
several rounds of revision and review with state, local and federal agencies. The Phase II
watershed land use data is provided here (Table E.4.1) for purposes of comparison with the
Phase IV Watershed Model land use data.
Table E.4.1
Watershed Model Land Uses for Phase II Watershed Model Segmentation in Acres
Phase II
Model
Segment
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
Convent
Til
100723
160951
78620
126240
37257
66122
62800
144248
24395
91758
173581
104846
27034
17350
7080
13174
84971
21425
22470
38588
8121
Conserv.
Till
10869
10943
14797
54651
9509
43988
44435
133753
29316
62717
200603
85976
37578
11180
2998
11118
168939
49723
32018
127498
69422
Hayland
226565
401085
240216
63556
54900
134578
62979
149693
71198
148417
152836
70578
20404
57926
37911
41362
199500
116083
88901
97542
71578
Pasture
159325
300413
145469
29624
73066
139180
31756
76049
50173
87849
127594
58097
24304
108588
148161
105876
220191
211836
200709
79147
105951
Animal
Waste
614
1716
668
149
94
402
193
614
211
607
792
806
160
145
108
128
925
522
412
540
186
Forest
984938
1844310
875001
570931
679540
2254498
610012
802377
394793
1076335
416256
80692
52115
614346
726540
584313
722664
594668
503065
189716
209156
Urban
199187
420461
105210
96136
56731
78824
32814
134620
16180
74940
146910
73096
26872
48740
22927
46443
198101
40625
50154
83164
146032
Water
12275
54215
101685
13399
2887
10139
6549
1501
13616
5163
11426
1246
283
5004
2336
2398
8949
3520
2113
5178
872
Total
1694496
3194094
1561666
954686
913984
2727731
851538
1442855
599882
1547786
1229998
475337
188750
863279
948061
804812
1604240
1038402
899842
621373
611318
31
-------
Table E.4.1
Watershed Model Land Uses for Phase II Watershed Model Segmentation in Acres
Phase II Convent. Conserv.
Model Til Till
Segment
230
235
240
250
260
265
270
280
290
300
310
330
340
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
560
570
580
590
600
610
620
630
640
25054
7131
4081
9007
17381
335
8075
25308
11562
33120
8054
2225
4956
58234
2891
26375
10255
80022
74878
23068
40847
35242
40061
3883
14662
2193
20211
26009
377
4553
93729
4486
4508
90525
37840
8774
44936
43813
5661
15119
1187
5854
37390
5094
18703
5830
28427
738
37671
29341
14252
37019
2600
10233
8806
131680
5875
115199
19856
103255
137165
12012
79758
23897
68763
9975
26048
3558
36968
12075
897
5191
56477
5712
23599
38466
11244
3167
44700
45912
13915
19434
1433
20614
Hayland
121214
8852
2816
14837
28076
10845
162192
147753
21120
52912
217
4845
5352
8949
1924
7451
1028
6059
7919
752
2839
297
41278
5048
13068
1718
21148
9760
630
3353
28398
3966
41292
7942
2045
133
8220
5829
3729
349
3
213
Pasture Animal
Waste
224145
7370
2337
22253
24010
19176
233212
269838
32646
80932
4191
8477
10534
9108
1867
5493
1164
5884
4579
1249
5601
2658
49235
7632
22795
3540
29197
7105
673
3147
38337
3532
50331
17024
7143
990
12615
18257
4013
3860
112
1361
391
21
9
50
71
13
316
331
57
137
8
23
26
71
12
72
10
49
37
4
22
2
321
28
72
10
110
15
2
5
65
11
97
86
7
1
44
30
11
5
0
6
Forest
577312
123800
176769
146892
335375
189339
1364448
1356569
222413
525824
71259
25606
45387
249573
13354
77240
15138
135173
239890
81851
326226
123651
164399
38912
88338
14612
88664
163992
12270
62007
628468
33308
150755
422678
197054
23861
401542
525519
96481
73812
6276
54841
Urban
38857
11106
9702
11153
37553
2350
58967
74187
21071
33036
11673
30668
53586
50373
11089
30044
8274
40276
46993
18478
23929
6204
107100
28291
126398
26055
80015
128881
14288
58593
297355
52442
55594
31801
17525
2023
59765
105949
32942
16444
3431
60041
Water
2240
1202
1799
3884
701
0
1841
978
4366
1180
3235
3182
9221
44750
1044
6374
2221
2153
0
0
1423
14481
189
1477
391
268
1235
8259
1231
6429
24079
620
2210
15381
10642
2648
17003
24767
428
3172
0
5850
Total
1026603
164576
216216
213906
471594
222796
1866722
1913111
327487
764160
101237
85259
137868
552738
38056
268248
57946
372871
511461
137414
480645
206432
471346
95246
291772
51954
277548
356096
30368
143278
1166908
104077
328386
623903
283500
41597
588825
770076
157180
132195
12442
148780
32
-------
Section E.5
Original EMAP Level 2 Land Use Data by Phase IV Watershed Model Segment
For Phase IV of the Watershed Model, remotely sensed data for calendar year, 1990,
supplied by the U.S. E.P.A.'s Environmental Monitoring and Assessment Program
(EMAP)was used to determine land use 3,4. The EMAP Level 2 data was delivered in a
raster format with each raster being approximately 660 square meters (0.165 acres). As
EMAP employs two levels of detail in classification of land use, the more detailed level was
chosen. The EMAP land use level 2 classification scheme is as follows:
0 Unassigned
11 High Intensity Developed
12 Low Intensity Developed
21 Woody Cultivated
22 Herbaceous Cultivated
31 Herbaceous
41 Deciduous Forest
42 Evergreen Forest
43 Mixed forest
51 Exposed Soil
52 Exposed sand
53 Exposed Rock
71 Deciduous Wetland
72 Evergreen Wetland
73 Mixed Forest Wetland
81 Herbaceous Wetland
91 Non-vegetated Wetland
100 Water
J Chesapeake Bay Watershed Pilot Project. U.S. E.P.A., EMAP Center, Research Triangle Park , NC
2771 1. Publication code: EPA/620/R-94/XXX, March 1994.
4 Congalton, R. G. "A Review of Assessing the Accuracy of Classifications of Remotely Sensed Data."
Remote Sensing of the Environment. 1991. 37(1): 35-46.
33
-------
Table E.5.1
Original 1990 EMAP Land Use Data Sorted by Phase IV Chesapeake Bay Watershed Model Segments In Acres
Mod. Not
Seg. Assigned
0
10 39814.55
20 73117.44
30 12070.50
40 30773.23
SO 0.00
60 28019.87
70 0.00
80 9733.61
90 6702.78
100 1428.16
110 5741.08
120 6477.78
140 0.00
160 58694.91
170 28967.59
175 0.00
180 45.23
190 0.00
200 342.94
210 0.00
220 297.38
230 846.57
235 0.00
240 0.00
250 335.70
260 339.48
265 20035.48
270 54911.93
280 27234.17
290 305.76
300 30717.14
310 7220.72
330 0.00
340 0.00
370 11.18
380 88.49
390 0.00
400 0.00
410 2467.82
420 0.00
430 18553.05
440 0.00
450 11221.47
470 0.00
480 0.00
490 0.00
High Int.
Devel.
11
2558.94
4580.86
14468.25
8266.47
446.39
931.76
737.19
5114.59
55.92
365.96
8587.36
338.00
122.21
317.44
73.03
6.09
1515.00
3201.06
1033.74
1080.78
11648.78
170.56
2.63
0.00
42.27
21.55
9.54
1772.74
3053.19
719.92
414.48
26.65
171.39
4745.67
8.22
16.45
0.00
499.35
1156.28
1883.76
108.39
206.75
1880.80
4240.23
13681.23
10143.32
Low Int. Woody Herbac. Herbac. Decld.
Devel. Cultlv. Cultlv. Forest
12
66951.02
90203.51
49355.22
37263.01
15826.51
35204.41
19387.44
42381.22
5667.23
25913.91
79420.21
4435.79
1416.97
24836.58
11378.87
8022.06
21150.48
32129.67
19360.14
23675.53
67515.17
9005.30
1312.86
2786.41
1580.79
5393.38
934.23
34996.02
52357.43
17033.44
10441.02
1215.98
3193.99
34157.51
263.99
2726.54
1131.44
4199.60
7532.74
8386.70
3907.16
2931.65
22010.86
22803.31
29004.44
39156.97
21 22 31 41
0.16 180026.26 375807.15 964578.81
0.00 281456.84 854076.32 1481539.31
0.00 110048.04 346137.24 810092.76
0.00 90101.54 200231.16 544846.32
0.00 33580.69 46819.15 738842.97
0.00 113118.50 244190,37 2229888.08
0.00 142061.59 148659.93 511420.24
0.00 293988.70 299921.23 749513.93
0.00 69183.30 95737.52 398503.39
0.00 209521.00 229729.03 1043151.30
0.00 311579.68 300867.14 386349.17
0.00 41197.15 35872.51 34573.81
0.00 56648.97 50533.54 55588.59
0.00 26283.65 130164.12 598333.06
255.43 39491.19 209760.98 614323.88
0.00 26214.08 121958.50 608832.14
0.00 85715.42 148797.43 145114.95
0.00 169592.31 306822.37 464140.23
0.00 93416.74 297554.40 445326.98
0.00 124944.43 170647.60 186423.28
0.00 58036.34 225717.09 226095.56
0.00 93770.86 393420.21 462542.00
0.00 16849.56 26808.83 88794.93
5.26 28224.32 37643.45 108579.42
0.00 18285.12 61396.45 89887.72
0.00 67153.98 101346.03 227213.34
0.00 1298.38 43003.93 146468.93
0.00 59021.07 291822.88 1271578.65
0.00 140805.64 424355.62 1049043.87
0.00 44583.41 70089.90 159805.90
0.00 108948.67 156425.24 359896.93
0.00 8576.67 14514.47 52088.02
0.00 9260.74 32473.92 37442.13
0.00 7605.93 31818.32 52637.37
0.00 24377.19 2965.20 8845.10
0.00 161718.61 20085.32 69316.86
0.00 36475.16 3710.28 13769.72
0.00 193303.37 15464.16 70827.42
0.00 229588.56 27209.49 141861.91
0.00 46718.16 11976.42 40379.86
0.00 137498.00 37533.91 149279.35
0.00 78315.25 21844.24 18828.71
0.00 110230.44 142540.88 164552.23
0.00 31749.07 89831.79 124137.83
0.00 1983.93 11996.49 20752.77
0.00 514.16 14168.74 27931.22
Evergr. Mixed
Forest Forest
42 43
49897.18 40.13
359575.54 0.00
30575.85 56.25
26840.90 3745.64
6499.00 8.72
41230.70 3131.16
17583.46 677.32
19809.49 5764.44
12889.27 0.00
27948.49 0.00
16977.19 1430.79
6283.20 27.96
11289.73 46.05
13583.69 0.00
42005.39 795.91
35923.18 453.30
3040.69 285.37
54703.04 4658.82
33863.59 3107.47
2824.73 80.59
12709.50 307.57
59619.27 3659.46
29356.91 214.15
37527.98 0.00
27211.80 278.62
67485.07 117.77
8390.98 76.32
152227.77 114.81
219794.43 746.56
30947.57 45.72
93136.14 155.60
13829.42 0.00
1004.13 0.00
6210.50 0.00
227.47 0.00
2821.45 0.00
439.48 0.00
4714.74 0.00
25862.10 0.00
7904.29 0.00
63108.17 3.45
48205.86 0.00
14143.08 30.76
10350.07 0.00
1188.35 0.00
5205.22 0.00
Exposed
Soil
51
109.54
244.74
69.90
1475.20
11083.47
4693.03
52.30
248.20
8.39
320.90
951.34
53.62
42.93
1434.57
229.94
46.22
124.18
180.93
21.71
147.70
67.93
614.82
35.20
0.00
630.44
6.25
0.00
0.00
28.45
0.00
0.00
0.00
0.00
16.78
2.47
0.00
0.00
0.00
45.72
0.00
0.00
238.49
845.74
771.23
59.87
74.18
xpose Exposed
Sand Rock
52 53
0.00 506.75
0.00 609.06
0.00 6588.80
0.00 13410.50
0.00 24536.57
0.00 7631.59
0.00 545.08
0.00 6779.26
0.00 788.67
50.82 1461.05
0.00 2600.39
0.00 0.00
0.00 0.00
0.00 6615.28
0.00 298.36
0.00 169.08
0.00 460.54
0.00 128.95
0.00 841.30
0.00 1237.53
0.00 288.00
0.00 65.96
0.00 69.41
0.00 0.00
0.00 0.00
0.00 298.03
0.00 819.92
0.00 228.13
0.00 375.67
0.00 0.00
0.00 36.02
0.00 0.00
0.00 2.30
0.00 14.31
0.00 0.00
7.73 0.00
0.00 0.00
11.51 0.00
4.11 0.00
0.00 0.00
502.15 0.00
550.83 0.00
0.00 113.65
0.00 795.58
0.00 81.25
0.00 310.04
Decld. Evergr.
Mixed
Wetland Wetland Wetland
71
0.00
1214.99
79.28
2.63
0.00
0.00
0.00
0.00
0.00
0.00
115.13
10.20
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
332.74
0.00
0.00
43.26
0.00
0.00
0.00
0.00
0.00
200.50
0.00
148.03
37.34
17.76
87.50
917.62
147.21
4190.72
11896.65
3986.93
12134.98
4962.12
32.73
132.08
0.00
37.34
72
0.00
323.86
0,00
0.00
0.00
0.00
0.00
57.24
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0,00
0.00
0.00
0.00
0.00
49.18
0.00
o.oo
0.00
15.63
0.00
4.11
0.00
0.00
0.00
0.00
0.00
195.07
1372.23
0.00
1617.47
0.00
0.00
0.00
0.00
0.00
73
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
298.03
1367.79
0.00
5.76
0.00
0.00
0.00
0.00
0.00
Herbac. Nonveg. Water Total Area
Wetland Wetland In Acres
81
80.59
0.00
93.09
0.00
0.00
0.00
0.00
39.97
0.00
0.00
180.93
0.00
16.94
0.00
0.00
0.00
0.00
0.00
0.00
3.78
0.00
15.63
0.00
24.18
81.09
30.26
0.00
0.00
50.49
41.28
39.64
0.00
0.00
6.09
48.19
2281.14
146.88
3103.36
8217.78
12993.38
42789.62
20814.78
0.00
981.77
0.00
63.32
91 100
0.00 11230.35 1691601.44
0.00 30036.04 3176978.50
64.15 20671.03 1400370.37
338.17 12214.42 969509.18
0.00 6416.92 884060.38
0.00 17896.95 2725936.43
0.00 8178.64 849303.18
0.00 26612.61 1459964.48
0.00 10814.06 600350.54
0.00 7382.90 1547273.52
0.00 17670.96 1132471.57
7.89 2860.59 131938.50
60.53 10130.66 185897.12
0.00 4797.31 865060.61
0.00 2967.34 950547.90
0.00 4162.92 805787.57
0.00 3096.78 409346.07
0.00 4772.48 1040329.86
0.00 5899.15 900768.16
0.00 1960.08 513026.03
38.82 7522.37 610577.25
0.00 3140.04 1026870.67
0.00 979.13 164423.61
0.00 1042.95 215877.23
0.00 14133.71 213863.70
0.00 1915.01 471369.34
0.00 2618.97 223656.68
0.00 7293.91 1873967.89
58.22 14370.88 1932274.63
0.00 5583.35 329372.39
0.00 4280.69 764491.57
0.00 3537.25 101161.33
0.00 1494.11 85080.04
0.00 275.01 137505.25
0.00 994.76 37831.28
0.00 5197.81 265178.02
0.00 1707.60 5752778
0.00 4497.14 301304.49
0,00 4621.49 463204.68
0.00 2354.33 136583.83
0.00 10954.36 477995.80
0.00 8486.38 205385.06
0.00 6620.87 474223.52
0.00 5106.53 290899.48
0.00 294.09 79042.41
0.00 1656.45 99260.95
34
-------
Table E.5.1
Original 1990 EMAP Land Use Data Sorted by Phase IV Chesapeake Bay Watershed Model Segments In Acres
Mod. Not
Seg. Assigned
0
500 0.00
510 0.00
S40 0.00
550 0.00
560 0.00
580 0.00
590 0.00
600 44121.88
610 0.00
620 28350.80
630 2402.85
700 0.00
710 0.00
720 16043.95
730 372.05
740 526.49
750 0.00
760 0.00
770 1811.23
780 0.00
800 0.00
810 0.00
820 0.00
830 0.00
840 0.00
850 0.00
860 0.00
870 0.00
880 0.00
890 0.00
900 0.00
910 0.00
920 0.00
930 0.00
940 0.00
950 0.00
960 19511.13
970 0.00
980 0.00
990 0.00
High Int. Lowlnt Woody Herbac.
Herbac.
Devel. Devel. Cultlv. Cultlv.
11 12
2657.95 20641.75
516.79 8745.43
11385.29 48900.94
5143.70 45061.54
922.55 15436.53
0.00 128.62
830.45 19997.00
18339.56 115664.78
2875.23 31189.85
2160.58 10893.34
1035.39 7851.82
91.78 4317.37
1178.32 8830.13
5583.02 34732.03
1338.02 12316.40
1242.13 29015.13
247.21 5228.90
812.68 8343.94
0.00 10.20
41.78 492.12
103.46 1815.67
0.00 1652.50
0.00 3954.86
403.79 • 5314.76
606.43 505.44
862.68 7447.21
17344.96 26401.58
578.80 9995.46
2468.31 17076.21
11931.52 22584.06
13130.56 65904.61
4987.12 30032.09
1035.22 13818.57
0.00 137.34
97.37 6358.70
3979.37 25625.58
20139.93 68209.60
395.24 4145.65
407.74 11874.28
825.51 841.47
21 22
0.00 38230.47
0.00 544.26
0.00 460.87
0.00 22762.36
11.18 135005.84
0.00 7255.59
11.51 88200.34
0.00 66123.37
0.00 11322.46
0.00 24431.64
0.00 316.78
0.00 19544.52
0.00 64830.24
0.00 119367.00
0.00 79121.52
0.00 80524.68
0.00 34834.83
0.00 26330.86
0.00 32663.57
0.00 26349.44
0.00 17132.29
0.00 66408.40
0.00 11051.40
0.00 43179.59
0.00 68650.89
0.00 3631.00
0.00 281.85
0.00 489.16
0.00 4892.05
0.00 888.67
0.00 0.00
0.00 1843.30
0.00 61303.36
0.00 7155.26
16.61 29637.35
0.00 90.79
0.00 619.59
0.00 27.14
0.00 58616.78
0.00 2844.97
31
68896.90
3124.58
16855.31
147117.79
80269.74
4099.27
89327.34
136380.38
31217.48
25677.55
2317.82
41420.34
33846.98
61626.06
91214.39
303923.30
29593.92
66842.30
7129.27
1918.46
3624.92
6293.40
2830.66
8719.28
16982.46
12210.31
7180.26
3405.18
22117.77
8513.84
24741.51
38351.03
69112.25
4464.74
39968.99
6783.87
15122.87
3673.27
52932.44
3037.08
Decld.
Forest
41
158324.13
12707.19
21141.10
144638.29
279989.70
20435.00
250940.36
301866.18
73649.36
12027.24
156.09
85963.61
35505.90
59785.39
124400.99
417476.35
35862.16
74597.73
27746.18
15149.35
25638.24
27907.54
4491.88
18581.18
38.49
20668.89
5014.59
8319.60
59288.34
12548.47
33963.59
73535.05
181702.94
9704.17
68297.59
3089.05
1416.48
22594.92
191853.01
7325.82
Evergr. Mixed Exposed xpose Exposed Decld.
Forest Forest
42 43
13166.74 2.96
3517.02 0.00
3631.50 0.00
31616.83 909.40
90085.58 2.96
7399.84 0.00
99468.52 7.24
103664.18 5387.95
7247.86 0.00
7830.93 6985.03
1175.85 759.72
1885.90 0.00
2357.29 326.32
3515.38 579.29
6107.54 2579.99
32843.83 4116.38
765.15 0.00
2693.32 0.00
1723.56 0.00
1428.16 0.00
1245.75 0.00
483.07 0.00
843.93 0.00
4616.39 0.00
27.63 0.00
1890.83 0.00
1045.91 0.00
2597.26 0.00
4897.84 21.38
1113.51 0.00
3597.94 33.06
11361.28 2.80
53320.28 0.00
6666.43 0.00
88180.44 122.70
7852.48 2147.58
9986.57 4398.78
5538.94 0.00
54719.49 0.00
3347.28 0.00
Soil Sand
51 52
388.99 0.00
0.00 0.00
6.09 0.00
383.40 0.00
184.71 145.56
0.00 38.49
104.94 0.00
1332.60 566.46
11.68 0.00
98.69 11.18
0.00 0.00
0.00 0.00
73.69 0.00
476.49 0.00
71.55 0.00
0.00 0.00
13.65 0.00
232.74 0.00
0.00 0.00
0.00 0.00
124.34 0.00
0.00 0.00
0.00 19.57
0.00 0.00
0.00 365.30
177.80 0.00
0.00 0.00
0.00 0.00
40.63 33.22
0.00 0.00
109.38 0.00
110.04 0.00
300.01 112.01
0.00 184.87
73.36 544.75
5.10 6.25
125.33 298.86
101.15 0.00
152.14 227.80
0.00 122.21
Evergr.
Mixed Herbac. Nonveg. Water Total Area
Rock Wetland Wetland Wetland Wetland Wetland
53 71
218.43 2673.58
130.92 28.29
1124.86 40.79
49.34 0.00
0.00 3964.40
0.00 28.95
0.00 9016.32
0.00 10909.95
0.00 114.64
0.00 2459.76
0.00 234.22
0.00 0.00
0.00 4.11
209.05 2.80
253.30 0.00
427.97 0.00
128.62 0.00
210.86 0.00
0.00 146.22
0.00 34.38
0.00 40.95
0.00 296.72
0.00 184.38
0.00 80.10
0.00 44353.47
7.89 1511.05
0.00 102.30
0.00 33.72
0.00 55.10
0.00 37.17
0.00 0.00
0.00 0.00
0.00 1386.54
0.00 346.22
0.00 227.80
0.00 85.53
0.00 237.34
0.00 0.00
0.00 1078.48
0.00 155.27
72
0.00
0.00
0.00
0.00
363.82
0.00
1073.05
6282.54
0.00
2655.32
462.18
0.00
0.00
0.00
000
0.00
0,00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
31228.99
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1333.91
1021.08
0.00
0.00
0.00
73 81
0.00 3481.49
0.00 0.00
0.00 0.00
0.00 13.65
0.00 7277.80
0.00 29.77
145.89 13734.03
356.26 12633.18
0.00 2.63
5484.83 3842.03
532.91 358.40
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 000
0.00 0.00
0.00 0.00
0.00 100.50
0.00 0.00
0.00 22.04
0.00 476.66
0.00 1287.69
0.00 506.26
11156.67 83009.44
0.00 3984.30
0.00 210.70
0.00 45.89
0.00 846.73
0.00 8.22
0.00 21.22
0.00 16.45
0.00 3361.26
0.00 666.30
16.12 7705.77
241.78 7191.12
2455.32 1590.83
0.00 5.76
0.00 1549.21
0.00 198.20
91 100
0.00 5227.58
0.00 961.37
0.00 177.47
0.00 3132.14
0.00 12298.14
0.00 2004.65
15.46 15811.87
0.00 30787.70
0.00 1024.69
1653.98 7887.51
0.00 825.51
000 184955
0.00 8067.45
0.00 1873.73
0.00 1078.81
0.00 5448.31
0.00 632.91
0.00 2997.27
0.00 64.97
0.00 0.00
0.00 1253.32
0.00 4490.73
0.00 2199.56
0.00 5650.29
0.00 19946.50
0.00 2540.85
0.00 1625.20
18.91 177323
0.00 3713.57
0.00 627.81
0.00 1031.60
0.00 845.41
0.00 7862.18
0.00 2475.55
0.00 9405.15
0.00 4732.34
0.00 9626.86
0.00 251.49
10.36 10393.82
000 2279.99
In Acres
333910.97
30275.85
103724.21
400828.44
625958.51
41420.18
588684.32
854416.95
158655.88
14245041
18429.53
15507307
15502043
303794.18
318854.55
875544.57
107307.35
183061.69
71395.69
45413.69
51000.98
108009.01
26863.93
87051.63
276871.70
54932.82
59187.35
27257.19
115450.96
58253.29
142533.48
161084.57
393314.62
31800.88
250652.69
63164.75
154760.56
36733.56
383815.55
20977.80
35
-------
Section £.6
Corrected EMAP Level 2 Land Use Data by Phase IV Watershed Model Segment
The data as delivered by EMAP had areas within the Chesapeake Bay watershed
which were unassigned for land use (see section E.5., Table E.5.1, Column 2). To correct
this discrepancy, a GIS function was applied. The function incrementally changed selected
rasters based upon the value of the nearest neighboring raster, with proximity determined by
least Euclidean distance. Thirty-seven out of the eighty-seven Phase IV Watershed Model
segments had areas within their bounds which were unassigned. The percent area corrected
is equal to the percent area unclassified as detailed in Table E.6.1 below. The corrected
EMAP land use data sorted by Phase IV Watershed Model segments is provided in Table
E.6.2.
Table E.6.1
Percentage of Phase IV Chesapeake Bay Watershed Model Segment Unassigned for EMAP Level 2 Land
Use
Percent
Mod Mod Segm
Segm. Unassig.
Percent Percent Percent
Mod Mod Segm. Mod Mod Segm.
Segm. Unassig. Segm. Unassig.
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
2.35%
2.30%
0.86%
3.17%
0.00%
1.03%
0.00%
0!67%
1.12%
0.09%
0.51%
4.91%
0.00%
6.79%
3.05%
0.00%
0.01%
0.00%
0.04%
0.00%
0.05%
0.08%
0.00%
0.00%
0.16%
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
530
540
0.070%
8.96%
2.93%
1.41%
0.09%
4.02%
7.14%
0.00%
0.00%
0.03%
0.03%
0.00%
0.00%
0.53%
0.00%
3.88%
0.00%
2.37%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
550
560
580
590
600
610
620
630
700
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
0.01%
0.00%
0.00%
0.00%
5.16%
0.00%
19.90%
13.04%
0.00%
0.00%
5.28%
0.12%
0.06%
0.00%
0.00%
2.54%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
Mod
Segm.
880
890
900
910
920
930
940
950
960
970
980
990
Mod Segm
Unassig.
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
0.00%
12.61%
0.00%
0.00%
0.00%
36
-------
Table E.6.2
Corrected 1990 EMAP Land Use Data Sorted by Phase IV Chesapeake Bay Watershed Model Segments In Acres
Model Highlnt
Seg. Devel.
11
10 2558.94
20 4580.86
30 14638.65
40 8535.55
50 446.39
60 931.76
70 737.19
80 5177.25
90 55.92
100 365.96
110 8616.15
120 338.00
140 122.21
160 317.44
170 73.03
175 6.09
180 1515.00
190 3201.06
200 1035.71
210 1080.78
220 11648.78
230 170.56
235 2.63
240 0.00
250 42.27
260 21.55
265 9.54
270 1772.74
280 3214.05
290 719.92
300 414.48
310 26.65
330 171.39
340 4745.67
370 822
380 16.45
390 0.00
400 499.35
410 1156.28
420 1883.76
430 108.39
440 206.75
450 1880.80
470 4240.23
Low Int. Woody Herbac. Herbac.
Devel.
12
67690.18
90584.61
49821.02
37537.19
16053.98
35714.46
19387.44
42514.12
5717.40
25926.24
79740.61
4435.79
1416.97
25476.89
11381.34
8022.06
21150.48
32129.67
19396.98
23675.53
67518.30
9012.70
1312.86
2786.41
1582.77
5398.48
934.23
35542.41
57984.37
17036.90
11295.65
1678.16
3193.99
34157.51
263.99
2726.54
1131.44
4199.60
7549.18
8386.70
3909.79
2931.65
22258.89
22803.31
Cultiv Cultlv.
21 22 31
118.59 193541.86 382679.51
0.00 292391.95 875891.78
0.00 110077.48 346746.96
0.00 90223.09 200328.53
0.00 38790.84 49642.73
0.00 113264.89 245379.21
0.00 142061.59 148659.93
0.00 293991.66 299928.47
0.00 69211.43 96389.51
0.00 209630.71 229905.35
0.00 314465.31 303307.16
0.00 42717.57 37623.55
0.00 56648.97 50533.54
0.00 28184.52 139757.10
255.43 39491.19 211922.21
0.00 26214.08 121958.50
0.00 85725.45 148821.12
0.00 169592.31 306822.37
0.00 93499.48 297656.71
0.00 124944.43 170647.60
0.00 58081.74 225903.28
0.00 93869.39 393840.62
0.00 16849.56 26808.83
5.26 28224.32 37643.45
0.00 18311.43 61492.67
0.00 67210.23 101417.75
0.00 1386.87 45770.60
0.00 60389.19 300222.39
0.00 143729.55 429523.17
0.00 44616.30 70159.31
0.00 114732.68 163185.91
0.00 9126.03 16690.84
0.00 9260.74 32473.92
0.00 0.00 31818.32
0.00 24388.38 2965.20
0.00 161739.01 20105.55
0.00 36475.16 3710.28
0.00 193303.37 15464.16
0.00 229990.22 27229.07
0.00 46718.16 11976.42
0.00 143183.33 39154.17
0.00 78315.25 21844.24
0.00 114265.73 146107.73
0.00 31749.07 89831.79
Decld.
Forest
41
981565.87
1516034.16
820827.21
555521.40
760066.47
2256026.50
511420.24
754321.60
404475.89
1044228.47
386415.62
37323.70
55588.59
643076.00
639077.23
608832.14
145126.46
464140.23
445437.83
186423.28
226155.75
462788.72
88794.93
108579.42
90053.51
227378.97
162467.64
1315137.70
1061592.84
159977.12
373197.55
55387.93
37442.13
52637.37
8845.10
69364.72
13769.72
70827.42
143555.04
40379.86
158116.23
18828.71
167759.54
124137.83
Evergr. Mixed Exposed Exposed Exposed
Forest Forest
42 43
51301.81 40.13
364867.76 0.00
30575.85 56.25
27526.94 3745.64
6508.70 8.72
41243.69 3132.80
17583.46 677.32
20347.17 7213.81
12889.27 0.00
27983.85 0.00
16977.19 1430.79
6539.62 27.96
11289.73 46.05
14358.88 0.00
44055.93 795.91
35923.18 453.30
3040.69 285.37
54703.04 4658.82
33867.38 3109.94
2824.73 80.59
12709.83 307.57
59688.19 3661.76
29356.91 214.15
37527.98 0.00
27238.94 278.62
67525.86 117.77
8857.77 76.32
153266.61 114.81
219972.72 746.56
30968.13 45.72
96829.65 155.60
14467.43 0.00
1004.13 0.00
6210.50 0.00
227.47 0.00
2821.45 0.00
439.48 0.00
4714.74 0.00
26199.11 0.00
7904.29 0.00
65516.11 3.45
48205.86 0.00
14307.07 30.76
10350.07 0.00
Soil
51
109.54
244.74
69.90
1475.20
11199.27
4700.43
52.30
248.20
8.39
320.90
951.34
53.62
42.93
1837.21
229.94
46.22
124.18
180.93
21.71
147.70
67.93
615.97
35.20
0.00
631.10
6.25
0.00
0.00
28.45
0.00
0.00
0.00
0.00
16.78
2.47
0.00
0.00
0.00
45.72
0.00
0.00
238.49
845.74
771.23
Decid. Evergr.
Mixed Herbac. Nonveg. Water Total Area
Sand Rock Wetland Wetland Wetland Wetland Wetland In Acres
52 53
0.00 506.75
0.00 609.06
0.00 6588.80
0.00 13693.57
0.00 25699.59
0.00 7640.80
0.00 545.08
0.00 9501.37
0.00 788.67
50.82 1470.59
0.00 2600.39
0.00 0.00
0.00 0.00
0.00 7148.19
0.00 298.36
0.00 169.08
0.00 460.54
0.00 128.95
0.00 841.30
0.00 1237.53
0.00 288.00
0.00 65.96
0.00 69.41
0.00 0.00
0.00 0.00
0.00 298.03
0.00 1534.74
0.00 228.13
0.00 375.67
0.00 0.00
0.00 36.02
0.00 0.00
0.00 2.30
0.00 14.31
0.00 0.00
7.73 0.00
0.00 0.00
11.51 0.00
4.11 0.00
0.00 0.00
502.15 0.00
550.83 0.00
0.00 113.65
0.00 795.58
71
0.00
1214.99
79.28
2.63
0.00
0.00
0.00
0.00
0.00
0.00
115.13
10.20
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
332.74
0.00
0.00
43.26
0.00
0.00
0.00
0.00
0.00
200.50
0.00
148.03
37.34
17.76
87.50
917.62
147.21
4190.72
11896.65
3986.93
12134.98
4962.12
32.73
132.08
72
0.00
323.86
0.00
0.00
0.00
0.00
0.00
57.24
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
49.18
0.00
0.00
0.00
15.63
0.00
4.11
0.00
0.00
0.00
0.00
0.00
195.07
1372.23
0.00
1617.47
0.00
0.00
0.00
73
0.00
0.00
0.00
0.00
0.00
0.00
000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
298.03
1367.79
0.00
5.76
0.00
0.00
0.00
81
80.59
0.00
93.09
0.00
0.00
0.00
0.00
3997
0.00
0.00
180.93
0.00
16.94
0.00
0.00
0.00
0.00
0.00
0.00
3.78
0.00
15.63
0.00
24.18
81.75
30.26
0.00
0.00
50.49
41.28
39.64
0.00
0.00
6.09
48.19
2281.14
146.88
3103.36
8217.78
12993.38
42789.62
20814.78
0.00
981.77
91 100
0.00 11526.08 1691719.87
0.00 30234.73 3176978.50
64.15 20731.72 1400370.37
338.17 12308.99 951236.90
0.00 6416.92 914833.61
0.00 17901.88 2725936.43
0.00 8178.64 849303.18
0.00 26623.63 1459964.48
0.00 10814.06 600350.54
0.00 7390.63 1547273.52
0.00 17670.96 1132471.57
7.89 2860.59 131938.50
60.53 10130.66 185897.12
0.00 4904.39 865060.61
0.00 2967.34 950547.90
0.00 4162.92 805787.57
0.00 3096.78 409346.07
0.00 4772.48 1040329.86
0.00 5901.12 900768.16
0.00 1960.08 513026.03
38.82 7524.51 610577.25
0.00 3141.19 1026870.67
0.00 979.13 164423.61
0.00 1042.95 215877.23
0.00 14150.65 213863.70
0.00 1915.01 471369.34
0.00 2618.97 223656.68
0.00 7293.91 1873967.89
58.22 14998.53 1932274.63
0.00 5591.57 329372.39
0.00 4604.38 764491.57
0.00 3632.15 101161.33
0.00 1494.11 85080.04
0.00 275.01 129899.31
0.00 994.76 37831.28
0.00 5197.81 265178.02
000 1707.60 5752778
0.00 4497.14 301304.49
0.00 4621.49 463204.68
0.00 2354.33 13658383
0.00 1095436 477995.80
0.00 8486.38 205385.06
0.00 6620.87 474223.52
0.00 5106.53 290899.48
37
-------
Table E.6.2
Corrected 1990 EMAP Land Use Data Sorted by Phase IV Chesapeake Bay Watershed Model Segments in Acres
Model Hlghlnt
Seg. Devel.
11
480 13681.23
490 10143.32
500 3483.47
510 516.79
530 1.32
540 11385.29
550 5143.70
560 922.55
580 0.00
590 830.45
600 18682.99
610 2875.23
620 3448.93
630 1035.39
700 91.78
710 1178.32
720 5583.02
730 1338.02
740 1242.13
750 247.21
760 812.68
770 0.00
780 41.78
800 103.46
810 0.00
820 0.00
830 403.79
840 606.43
850 862.68
860 17344.96
870 578.80
880 2468.31
890 11931.52
900 13130.56
910 5382.36
920 1441.15
930 0.00
940 97.37
950 3979.37
960 22011.68
Low Int. Woody Herbac.
Herbac.
Devel. Cultlv Cultlv.
12
29004.44
39156.97
21483.21
8745.43
186.52
48900.94
45061.54
15436.53
128.62
19997.00
119098.57
31189.85
16135.07
8118.60
4317.37
8830.13
35322.67
12319.03
29028.45
5228.90
8343.94
10.20
492.12
1815.67
1652.50
3954.86
5314.76
505.44
7447.21
26401.58
9995.46
17076.21
22584.06
65904.61
34204.39
25507.15
137.34
6358.70
25625.58
72525.32
21 22
0.00 1983.93
0.00 514.16
0.00 41075.43
0.00 544.26
0.00 0.00
0.00 460.87
0.00 22762.36
11.18 135005.84
0.00 7255.59
11.51 88200.34
0.00 70889.26
0.00 11322.46
0.00 29911.86
0.00 450.17
0.00 19544.52
0.00 64830.24
0.00 122407.03
0.00 79242.58
0.00 80609.55
0.00 34834.83
0.00 26330.86
0.00 32984.79
0.00 26349.44
0.00 17132.29
0.00 66408.40
0.00 11051.40
0.00 43179.59
0.00 68650.89
0.00 3631.00
0.00 261.85
0.00 489.16
0.00 4892.05
0.00 888.67
0.00 0.00
0.00 1874.38
0.00 119952.54
0.00 7155.26
16.61 29631.92
0.00 90.79
0.00 3301.39
31
11996.49
14168.74
91933.98
3124.58
39.15
16855.31
147117.79
80269.74
4099.27
89327.34
149181.82
31217.48
34304.06
3637.42
41420.34
33846.98
65856.09
91325.91
304179.55
29593.92
66842.30
7328.29
1918.46
3624.92
6293.40
2830.66
8719.28
16982.46
12210.31
7180.26
3405.18
22117.77
8513.84
24741.51
42048.97
122048.47
4464.74
39968.99
6783.87
19427.08
Decld.
Forest
41
20752.77
27931.22
165649.90
12707.19
55.76
21141.10
144638.29
279989.70
20435.00
250940.36
319139.76
73649.36
13538.63
156.09
85963.61
35505.90
66587.68
124525.34
417614.84
35862.16
74597.73
28886.67
15149.35
25638.24
27907.54
4491.88
18581.18
38.49
20668.89
5014.59
8319.60
59288.34
12548.47
33963.59
96179.31
373549.37
9704.17
68297.59
3089.05
1563.85
Evergr. Mixed Exposed Exposed Exposed
Forest Forest
42 43
1188.35 0.00
5205.22 0.00
16514.02 2.96
3517.02 0.00
52.80 0.00
3631.50 0.00
31616.83 909.40
90085.58 2.96
7399.84 0.00
99468.52 7.24
108452.94 5387.95
7247.86 0.00
9316.00 7741.46
1175.85 826.83
1885.90 0.00
2357.29 326.32
4728.23 579.29
6120.04 2579.99
32851.40 4116.38
765.15 0.00
2693.32 0.00
1874.06 0.00
1428.16 0.00
1245.75 0.00
483.07 0.00
843.93 0.00
4616.39 0.00
27.63 0.00
1890.83 0.00
1045.91 0.00
2597.26 0.00
4897.64 21.38
1113.51 0.00
3597.94 33.06
16910.91 2.80
107993.39 0.00
6666.43 0.00
88176.49 122.70
7852.48 2147.58
11023.60 7838.33
Soil
51
59.87
74.18
388.99
0.00
0.00
6.09
383.40
184.71
0.00
104.94
1332.60
11.68
98.69
0.00
0.00
73.69
527.97
71.55
0.00
13.65
232.74
0.00
0.00
124.34
0.00
0.00
0.00
0.00
177.80
0.00
0.00
40.63
0.00
109.38
211.19
452.97
0.00
73.36
5.10
125.33
Sand
52
0.00
0.00
122.21
0.00
0.00
0.00
0.00
145.56
38.49
0.00
566.46
0.00
11.18
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
19.57
0.00
365.30
0.00
0.00
0.00
33.22
0.00
0.00
0.00
342.11
184.87
544.75
6.25
298.86
Rock
53
81.25
310.04
218.43
130.92
0.00
1124.86
49.34
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
209.05
253.30
427.97
128.62
210.86
0.00
0.00
0.00
0.00
0.00
0.00
0.00
7.89
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
Decld.
Wetland
71
0.00
37.34
2828.85
28.29
0.00
40.79
0.00
3964.40
28.95
9016.32
10909.95
114.64
2761.25
251.16
0.00
4.11
2.80
0.00
0.00
0.00
0.00
146.22
34.38
40.95
296.72
184.38
80.10
44353.47
1511.05
102.30
33.72
55.10
37.17
0.00
0.00
2470.94
346.22
224.02
85.53
237.34
Evergr.
Wetland
72
0.00
0.00
0.00
0.00
0.00
0.00
0.00
363.82
0.00
1073.05
6282.54
0.00
4110.62
871.40
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
31228.99
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1333.91
1282.27
Mixed
Wetland
73
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
145.89
378.46
0.00
7422.86
666.96
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
11156.67
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
16.12
241.78
2455.32
Herbac. Nonveg. Water
.Wetland Wetland
81
0.00
63.32
3679.69
0.00
39.47
0.00
13.65
7277.80
29.77
13734.03
12633.18
2.63
3842.03
360.21
0.00
0.00
0.00
0.00
0.00
0.00
0.00
100.50
0.00
22.04
476.66
1287.69
506.26
83009.44
3984.30
210.70
45.89
846.73
8.22
21.22
22.20
4904.06
666.30
7543.10
7191.12
1619.61
91 100
0.00 294.09
0.00 1656.45
0.00 7507.57
0.00 961.37
8.22 304.28
0.00 177.47
0.00 3132.14
0.00 12298.14
0.00 2004.65
15.46 15811.87
0.00 31480.97
0.00 1024.69
1653.98 8153.80
0.00 879.46
0.00 1849.55
0.00 8067.45
0.00 1990.34
0.00 1078.81
0.00 5474.30
0.00 632.91
0.00 2997.27
0.00 64.97
0.00 0.00
0.00 1253.32
0.00 4490.73
0.00 2199.56
0.00 5650.29
0.00 19946.50
0.00 2540.85
0.00 1625.20
18.91 1773.23
0.00 3713.57
0.00 627.81
0.00 1031.60
0.00 971.73
2.30 17770.63
0.00 2475.55
0.00 9036.55
0.00 4732.34
0.00 11050.08
Total Area
in Acres
79042.41
99260.95
354888.69
30275.85
687.52
103724.21
400828.44
625958.51
41420.18
588684.32
85441744
158655.88
142450.41
18429.53
155073.07
155020.43
303794.18
318854.55
875544.57
107307.35
183061.69
71395.69
45413.69
51000.98
108009.01
26863.93
87051.63
276871.70
54932.82
59187.35
27257.19
115450.96
58253.29
142533.48
197808.24
776435.10
31800.88
250108.27
63164.75
154760.07
38
-------
Section E.7
Corrected 1990 EMAP Level 2 Land Use Data Aggregated in Final Database
Categories
EMAP's final documentation for the Chesapeake Bay watershed study showed that
using the aggregation scheme detailed below, overall thematic accuracy^r_the_data_set was
eighty percent and non-transition site (pixels not located on a land use border) accuracy was
"ninety percent3. In ac!5dTdanclfwith the findings of this analysis, the following aggregation
scheme was employed.
11
12
Original EMAP Land Use
Level 2 Classification Scheme
High Intensity Developed
Low Intensity Developed
21 Woody Cultivated
22 Herbaceous Cultivated
31 Herbaceous
41 Deciduous Forest
42 Evergreen Forest
43 Mixed Forest
52 Exposed Sand
53 Exposed Rock
71 Deciduous Wetland
72 Evergreen Wetland
73 Mixed Forest Wetland
81 Herbaceous Wetland
91 Non-vegetated Wetland
100 Water
Final Chesapeake Bay Land Use
Database Category
11 High Intensity Developed
12 Low Intensity Developed 3
30 Woody %
20
20
30
30
40
40
40
30
30
30
20
Herbaceous
Herbaceous
Woody
Woody
Exposed
Exposed
Exposed
Woody
Woody
Woody
Herbaceous
40 Exposed
60 Water
5 Documentation of this EMAP data collection and interpretation procedure can be found in the
Chesapeake Bav Watershed Pilot Project, available from the U.S. E.P.A., EMAP Center, Research Triangle
Park, NC 27711. Publication code: EPA/620/R-94/XXX, March 1994.
39
-------
Table E.7.1.
Aggregated EMAP Land Use Data, Sorted by Model Segments in Acres.
Model High Low Herbaceous Woody Exposed Water Total Area
Seg. Intensity Intensity in Acres
Developed Developed
11 12 20 30 40 60
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
2558.94
4580.86
14638.65
8535.55
446.39
931.76
737.19
5177.25
55.92
365.96
8616.15
338.00
122.21
317.44
73.03
6.09
1515.00
3201.06
1035.71
1080.78
11648.78
170.56
2.63
0.00
42.27
21.55
9.54
1772.74
3214.05
719.92
414.48
26.65
171.39
4745.67
8.22
16.45
0.00
499.35
1156.28
1883.76
108.39
206.75
1880.80
67690.18
90584.61
49821.02
37537.19
16053.98
35714.46
19387.44
42514.12
5717.40
25926.24
79740.61
4435.79
1416.97
25476.89
11381.34
8022.06
21150.48
32129.67
19396.98
23675.53
67518.30
9012.70
1312.86
2786.41
1582.77
5398.48
934.23
35542.41
57984.37
17036.90
11295.65
1678.16
3193.99
34157.51
263.99
2726.54
1131.44
4199.60
7549.18
8386.70
3909.79
2931.65
22258.89
576301.96
1168283.73
456917.53
290551.62
88433.57
358644.10
290721.52
593960.10
165600.94
439536.06
617953.40
80341.12
107199.45
167941.62
251413.40
148172.58
234546.57
476414.68
391156.19
295595.81
283985.02
487725.64
43658.39
65891.95
79885.85
168658.24
47157.47
360611.58
573303.21
114816.89
277958.23
25816.87
41734.66
31824.41
27401.77
1033026.40
1882440.77
851538.59
586796.61
766583.89
2300402.99
529681.02
781939.82
417365.16
1072212.32
404938.73
43901.48
66924.37
657434.88
684184.50
645208.62
148452.52
523502.09
482415.15
189328.60
239505.89
526138.67
118365.99
146155.92
117571.07
295071.78
171401.73
1468519.12
1282312.12
191207.10
470182.80
70007.50
38483.60
58865.63
9160.07
184125.70 73103.79
40332.32^ 14356.41
211870.89
265437.07
71687.96
225127.12
120974.27
260373.46
80225.98
184390.82
52271.08
237394.00
71996.69
182130.10
616.29
853.80
6722.85
15506.94
36898.86
12341.23
597.38
9749.57
797.06
1842.31
3551.73
61.51
103.46
8985.40
528.30
215.30
584.72
309.88
863.01
1385.23
394.75
681.93
104.61
0.00
631.10
304.28
1534.74
228.13
462.34
0.00
36.02
0.00
2.30
31.09
2.47
7.73
0.00
11.51
49.83
0.00
502.15
789.32
959.39
11526.08
30234.73
20731.72
12308.99
6416.92
17901.88
8178.64
26623.63
10814.06
7390.63
17670.96
2860.59
10130.66
4904.39
2967.34
4162.92
3096.78
4772.48
5901.12
1960.08
7524.51
3141.19
979.13
1042.95
14150.65
1915.01
2618.97
7293.91
14998.53
5591.57
4604.38
3632.15
1494.11
275.01
994.76
5197.81
1707.60
4497.14
4621.49
2354.33
10954.36
8486.38
6620.87
1691719.85
3176978.50
1400370.36
951236.90
914833.61
2725936.42
849303.19
1459964.49
600350.54
1547273.52
1132471.58
131938.49
185897.12
865060.62
950547.91
805787.57
409346.07
1040329.86
900768.16
513026.03
610577.25
1026870.69
164423.61
215877.23
213863.71
471369.34
223656.68
1873967.89
1932274.62
329372.38
764491.56
101161.33
85080.05
129899.32
37831.28
265178.02
57527.77
301304.47
463204.67
136583.83
477995.81
205385.06
474223.51
40
-------
Table E.7.1.
Aggregated EMAP Land Use Data, Sorted by Model Segments in Acres.
Model High Low Herbaceous Woody Exposed Water Total Area
Seg. Intensity Intensity in Acres
Developed Developed
11 12 20 30 40 60
470
480
490
500
510
530
540
550
560
580
590
600
610
620
630
700
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
4240.23
13681.23
10143.32
3483.47
516.79
1.32
11385.29
5143.70
922.55
0.00
830.45
18682.99
2875.23
3448.93
1035.39
91.78
1178.32
5583.02
1338.02
1242.13
247.21
812.68
0.00
41.78
103.46
0.00
0.00
403.79
606.43
862.68
17344.96
578.80
2468.31
11931.52
13130.56
5382.36
1441.15
0.00
97.37
3979.37
22011.68
22803.31
29004.44
39156.97
21483.21
8745.43
186.52
48900.94
45061.54
15436.53
128.62
19997.00
119098.57
31189.85
16135.07
8118.60
4317.37
8830.13
35322.67
12319.03
29028.45
5228.90
8343.94
10.20
492.12
1815.67
1652.50
3954.86
5314.76
505.44
7447.21
26401.58
9995.46
17076.21
22584.06
65904.61
34204.39
25507.15
137.34
6358.70
25625.58
72525.32
122562.63
13980.42
14746.22
136689.10
3668.84
78.62
17316.18
169893.80
222553.38
11384.63
191261.71
232704.26
42542.57
68057.95
4447.80
60964.86
98677.22
188263.12
170568.49
384789.10
64428.75
93173.16
40413.58
28267.90
20779.25
73178.46
15169.75
52405.13
168642.79
19825.61
7652.81
3940.23
27856.55
9410.73
24762.73
43945.55
246905.07
12286.30
77144.01
14065.78
24348.08
134619.98
21941.12
33173.78
184995.73
16252.50
108.56
24813.39
177164.52
374417.64
27863.79
360662.89
450551.60
81011.86
44890.82
3948.29
87849.51
38193.62
71898.00
133225.37
454582.62
36627.31
77291.05
30906.95
16611.89
26924.94
28687.33
5520.19
23277.67
86805.25
24070.77
6162.80
10950.58
64262.46
13699.15
37594.59
113093.02
484013.70
16716.82
156853.53
14750.33
24400.71
1566.81
141.12
384.22
729.63
130.92
8.22
1130.95
432.74
330.27
38.49
120.40
1899.06
11.68
1763.85
0.00
0.00
73.69
737.02
324.85
427.97
142.27
443.60
0.00
0.00
124.34
0.00
19.57
0.00
365.30
185.69
0.00
18.91
73.85
0.00
109.38
211.19
797.38
184.87
618.11
11.35
424.19
5106.53
294.09
1656.45
7507.57
961.37
304.28
177.47
3132.14
12298.14
2004.65
15811.87
31480.97
1024.69
8153.80
879.46
1849.55
8067.45
1990.34
1078.81
5474.30
632.91
2997.27
64.97
0.00
1253.32
4490.73
2199.56
5650.29
19946.50
2540.85
1625.20
1773.23
3713.57
627.81
1031.60
971.73
17770.63
2475.55
9036.55
4732.34
11050.08
290899.49
79042.42
99260.96
354888.71
30275.85
687.52
103724.22
400828.44
625958.51
41420.18
588684.32
854417.45
158655.88
142450.42
18429.54
155073.07
155020.43
303794.17
318854.57
875544.57
107307.35
183061.70
71395.70
45413.69
51000.98
108009.02
26863.93
87051.64
276871.71
54932.81
59187.35
27257.21
115450.95
58253.27
142533.47
197808.24
776435.08
31800.88
250108.27
63164.75
154760.06
41
-------
Section E.8
Chesapeake Bay Program Land Use by Phase IV Chesapeake Bay Watershed Model
Segment
The Phase IV Watershed Model's Chesapeake Bay Program Land Use (CBPLU)
database is a combination of Environmental Monitoring and Assessment Program (EMAP)6,
NOAA's Coastal Change Assessment Program (C-CAP)7 and USGS' Geographic
Information Retrieval and Analysis System (GIRAS)8 land use databases (Table E.8.1.). The
EMAP database is the primary source of land use data. A GRIDrNIBBLE edge expansion
algorithm was performed on the EMAP data to fill data gaps where the EMAP basin
boundary did not agree with the CBP watershed model basin boundary (See Section E.6.).
GIRAS data was used to fill small data gaps around the basin edge wherever they
occurred, due to a mismatch of EMAP and CBP watershed boundaries. The GIRAS data
was clipped to fill the areas with missing data, reclassified to EMAP land use categories,
converted to grid data, and then merged with the EMAP data. This placed the GIRAS data
on top of the EMAP nibbled data whenever the EMAP data was not classified. - ^,a , (c >*
C-CAP herbaceous emergent wetland types (C-CAP classifications 10 and 11) were
selected out of the 1989-90 grid and then merged with the EMAP/GIRAS data with the C-
CAP data having priority over the EMAP data. This enhancement was performed so as to
more accurately present herbaceous cover types as those that are associated with agriculture.
Urban land use categories 11, 12, 13, 15, 16, and 17 in GIRAS were then selected
out, converted to a grid and merged with the EMAP/GIRAS/C-CAP grid. Herbaceous and
woody areas in EMAP that fell within the selected GIRAS urban categories were selected
out and classified as Herbaceous Urban and Woody Urban, respectively. This enhancement
was performed so as to capture rural residential areas where natural covers dominated the
landscape, resulting in them being classified as an undeveloped land use. GIRAS class 14
6 Chesapeake Bay Watershed Pilot Project. EMAP Center, Research Triangle Park, NC 27711.
Publication code: EPA/620/R-94/XXX, March 1994.
7 Documentation for C-Cap is available from Dr. Kent Hughes, NOAA/NESDID/NODC, 1825
Connecticut Ave., NW., Washington, D.C. 20235
8 Anderson, et. al. A Land Use and Land Cover Classification System for Use with Remote Sensor Data.
1976.
42
-------
was not used because EMAP captures transportation networks well in its Low Intensity
Urban category and double counting was considered undesirable.
The following is the final CBPLU Classification Scheme:
EMAP High Intensity Urban
EMAP Low Intensity Urban
GIRAS Urban + EMAP Herbaceous
GIRAS Urban + EMAP Woody
EMAP Herbaceous
EMAP Woody
EMAP Exposed
EMAP Water
C-CAP Emergent Herb. Wetlands
CBPLU High Intensity Urban
CBPLU Low Intensity Urban
CBPLU Herbaceous Urban
CBPLU Woody Urban
CBPLU Herbaceous
CBPLU Woody
CBPLU Exposed
CBPLU Water
CBPLU Herbaceous Wetlands
43
-------
Table E.8.1
Chesapeake Bay Program Land Use in Acres by Phase IV Watershed Model Segment
56 IV
>del
nent
10
20
30
40
SO
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
720
730
740
High
Intensity
Urban
11
2556.97
4849.12
14492.76
8304.46
464.81
932.26
737.68
5218.54
55.92
365.96
8617.46
337.67
122.86
369.25
73.03
6.09
1522.07
3197.60
1038.51
1072.72
11566.21
169.74
2.63
0.00
42.93
21.38
9.54
1883.92
3351.23
715.81
828.14
25.33
171.22
4721.65
7.89
15.95
0.00
485.37
1128.97
1861.72
106.42
224.68
1960.90
4234.63
13633.70
10036.90
2645.29
516.13
11444.34
5116.07
921.07
0.00
824.36
20950.31
2883.95
2348.57
1014.66
555.93
91.78
1179.63
5832.53
1334.57
1236.71
Low
Intensity
Urban
12
67658.43
92910.32
49473.65
37729.63
15903.98
35300.47
19399.94
42932.88
5663.94
25937.92
79902.29
4432.67
1425.36
24966.02
11371.14
8014.00
21189.46
32116.35
19398.46
23644.12
67392.64
8992.31
1301.02
2773.09
1594.94
5371.01
932.42
36369.57
62330.52
16967.49
12040.40
1262.86
3196.29
34069.35
247.54
2660.92
1080.78
4157.00
7470.73
8271.24
3951.40
2890.53
22045.56
22712.19
28973.02
38877.85
20538.13
8727.66
48889.26
44905.78
15207.09
125.83
19754.06
116835.53
31194.45
13644.88
8531.11
3893.02
4315.56
8840.50
34947.50
12306.69
29003.45
Herbaceous
Urban
13
14873.20
34240.57
18057.81
9500.21
2313.70
7484.87
5101.27
11623.78
3318.33
11626.25
23244.27
878.14
462.02
4090.39
2236.23
1316.64
3704.85
49980.73
27855.56
4777.57
20280.72
31099.71
1627.01
2119.46
2559.60
6669.39
631.43
16648.57
32483.96
4548.29
7052.63
329.28
1755.80
7215.95
221.72
2683.94
1708.43
5994.87
8045.41
5643.05
6751.30
5284.82
7508.06
6872.85
6085.50
5416.24
33317.36
931.27
9851.87
33920.67
13535.83
1280.29
7858.40
26017.03
10308.29
6177.44
1294.93
2057.28
415.14
2631.97
7292.27
3213.89
9410.74
Woody
Urban
14
5499.96
11837.44
35982.55
13915.45
5564.27
5467.39
1948.23
6723.01
1351.18
7133.06
6216.92
329.78
309.38
4770.83
711.36
1064.99
995.91
10098.75
11015.38
1539.18
20105.22
10580.83
1018.28
1422.24
1613.03
3931.50
179.28
10440.20
28824.00
5523.97
4021.97
191.78
1257.43
5952.93
50.49
1096.41
349.84
1753.49
3284.45
2304.33
3010.59
2590.19
6194.22
5575.13
7316.78
5037.45
18560.12
3275.07
8061.53
18648.78
6158.69
792.12
5360.32
21553.94
6826.31
2425.05
976.50
958.41
145.89
697.88
2360.74
2145.44
2141.00
Herbaceous
20
557877.54
1126474.40
438649.52
281845.00
88934.90
357700.66
285509.56
582321.18
165887.78
427833.16
594364.05
78925.30
106739.25
162364.84
249821.25
146962.19
231020.34
426408.29
363398.65
290621.85
263519.26
456222.45
42016.74
63721.34
77335.95
161894.44
43974.51
340292.70
538121.17
110253.31
267736.30
24793.65
39972.28
32212.24
26911.13
178883.14
38135.23
202083.34
249471.74
54060.10
179283.65
96556.12
245761.46
115011.64
7904.78
9316.99
94918.09
2737>3
7418.26
135890.07
201622.14
9949.73
171457.98
204616.45
32203.52
50778.45
1802.18
52303.65
60531.46
96001.01
179427.07
167265.94
375137.24
Woody
30
1030639.51
1874602.28
816205.40
572062.56
753228.49
2288217.19
527834.76
773519.08
412209.29
1065093.08
398894.68
44106.59
66282.74
654476.59
682491.53
644044.12
147168.78
513445.95
471283.15
187946.51
219572.55
515688.59
117306.76
144674.15
115915.28
291146.53
174232.71
1460218.93
1252138.08
185626.39
467874.03
70951.27
37200.02
52849.88
8303.81
69702.56
13698.01
75035.41
177425.38
48608.99
226576.16
67967.65
180975.13
128748.95
14628.29
28007.37
152791.27
12951.28
16684.75
158337.29
364030.74
26644.02
352165.83
412884.30
74120.26
53389.85
3434.62
41404.88
87722.04
37534.23
71268.38
131181.41
452669.74
Exposed
40
649.52
872.22
6794.56
15612.52
41547.98
12389.75
597.38
11008.14
792.12
1849.05
3550.90
61.51
103.46
8775.36
528.47
215.30
584.39
309.88
868.28
1378.65
389.81
666.79
104.61
0.00
630.44
304.28
829.13
240.79
501.82
0.00
238.82
0.00
3.13
35.53
2.47
7.73
0.00
9.38
49.84
0.00
382.41
793.60
962.69
1570.27
143.10
383.23
605.11
130.92
1125.03
430.44
313.33
35.86
108.39
1954.48
11.68
1728.00
0.00
223.03
0.00
73.52
734.56
324.84
427.97
Water
60
11287.92
30627.50
20686.98
12267.05
6470.87
17914.55
8174.36
26616.55
10811.76
7391.12
17672.11
2866.84
10033.12
4795.17
2965.20
4164.24
3093.66
4772.31
5898.98
1951.85
7524.68
3124.25
975.84
1033.41
14144.23
1902.84
2612.07
7299.67
14367.76
5539.76
4294.34
3531.99
1491.48
271.22
650.51
4292.04
1499.87
3297.61
3360.60
1859.58
7325.66
6923.51
6513.30
5086.30
292.61
1679.31
5098.96
974.69
200.99
3091.19
9839.53
1637.21 ,
10232.96
23748.56
1008.41
7034.04
561.69
1336.87
1851.19
8061.69
1906.62
1078.97
5468.87
Herbaceous
Wetland
70
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
418.92
0.00
0.00
0.00
66.61
0.00
11.18
93.59
226.16
325.99
70.73
133.56
27.30
127.96
0.00
0.00
0.00
197.37
110.86
56.74
32.40
176.48
1435.72
5835.33
1055.62
8488.02
12967.56
13974.82
50524.16
22153.95
2302.19
1087.52
64.64
505.60
5436.64
31.09
48.19
488.17
14330.09
955.12
20922.02
25576.40
99.02
4709.32
804.13
59.38
0.00
0.00
0.00
2.80
48.85
Total
Acreage
1691043.04
3176413.85
1400343.23
951236.90
914428.99
2725407.14
849303.18
1459963.16
600090.33
1547229.60
1132462.69
131938.50
185897.12
864608.46
950198.22
805787.57
409346.07
1040329.86
900768.16
513026.03
610577.25
1026870.67
164423.61
215877.23
213863.70
471369.34
223401.09
1873394.35
1932118.54
329372.39
764197.48
101142.90
85080.04
137505.24
37831.28
265178.02
57527.78
301304.49
463204.68
136583.83
477911.76
205385.06
474223.52
290899.48
79042.41
99260.95
333910.98
30275.85
103724.21
400828.44
625958.51
41420.18
588684.32
854137.01
158655.88
142235.61
18419.82
102792.45
155073.07
155020.43
303769.67
318854.55
875544.57
44
-------
Table E.8.1
Chesapeake Bay Program Land Use in Acres by Phase IV Watershed Model Segment
Total
selV
del
nent
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
High
Intensity
Urban
11
247.05
253.62
0.00
41.94
96.38
0.00
0.00
395.24
469.75
844.59
17331.97
564.65
2421.93
11923.62
13119.05
4970.84
1027.33
0.00
93.59
3924.27
21305.41
388.00
394.58
815.48
251071.91
Low
Intensity
Urban
12
5225.12
4408.16
10.20
492.77
1726.68
1575.69
3895.32
5209.33
484.88
7183.06
26268.52
9934.76
16876.53
22561.36
65934.05
29977.16
13641.75
139.15
6293.56
25363.56
70518.69
4108.48
11649.60
854.79
1773300.65
Herbaceous
Urban
13
802.98
1740.99
1585.07
1312.53
1345.75
796.24
1695.60
4993.86
3699.43
5832.86
4788.92
1109.89
7001.97
3355.01
16807.45
18531.50
23788.20
847.22
2430.48
3059.94
10005.49
972.72
12088.59
1716.16
733746.92
Woody
Urban
14
152.96
921.90
319.42
155.60
1222.72
363.33
928.15
2007.12
919.10
2107.12
1612.37
2624.89
6123.16
4724.94
19753.08
14561.18
15117.28
420.40
1668.79
1003.15
7563.16
1412.70
12647.32
1993.79
467511.81
Herbaceous
20
63540.41
37068.11
38942.32
26971.99
19168.52
71027.92
12393.21
46116.34
92435.47
10763.24
2738.22
2797.92
20374.14
6050.14
7914.65
21576.47
106900.60
10826.23
69902.23
6208.20
12606.70
2724.90
99772.48
4182.33
13466159.86
Woody
30
36549.67
33965.57
30319.10
16415.01
24716.68
25860.78
4418.52
20925.47
80732.25
19687.94
4443.36
8280.61
57774.16
8970.60
17549.74
69851.41
219749.36
16143.62
153943.77
13640.11
19825.78
26612.94
233291.77
8702.01
23670396.96
Exposed
40
142.27
210.20
0.00
0.00
121.88
0.00
24.51
0.00
304.45
190.96
0.00
17.27
65.79
0.00
109.21
110.04
406.26
168.42
518.10
11.35
903.31
101.15
366.62
97.70
128837.77
Water
60
632.09
1633.92
56.25
0.00
977.16
3786.60
2113.04
5365.91
15407.09
1752.01
1740.50
1747.57
3354.85
648.37
996.90
994.59
7875.34
2017.97
7053.78
3535.28
8114.49
248.69
9138.86
2100.21
485780.33
Herbaceous
Wetland
70
14.80
63.32
163.33
23.85
1625.20
4598.46
1395.59
2038.37
82419.29
6571.04
263.49
179.61
1458.42
19.24
349.35
502.97
4793.36
1237.86
8748.39
6418.89
3836.76
162.50
4473.29
515.31
327873.48
Total
Acreage
107307.35
80265.79
71395.69
45413.69
51000.98
108009.01
26863.93
87051.63
276871.70
54932.82
59187.35
27257.19
115450.96
58253.29
142533.48
161076.16
393299.49
31800.88
250652.69
63164.75
154679.80
36732.08
383823.12
20977.78
41304679.80
45
-------
RgureE.8.1
Chesapeake Bay Program Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY,PA.MD.D.C,DE,
WVANDVA
D HERBACEOUS WETLAND
• HIGH INTENSITY URBAN
• LOW INTENSITY URBAN
• HERBACEOUS URBAN
• WOODY URBAN
m HERBACEOUS
• WOODY
HEXPOSED
D WATER
KJH My Pae April. 1997
/gv7/kbopkins^pQ»dixe/pcbpluall.ps
Source: U.S. E.P.A., Chesapeake Bay Program
46
-------
Figure E.8.2
High Intensity Urban Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C..DE,
WVANDVA
KJH Mg> Dae: June. 1997
/srvT/ldxiptins/appaufcig/pct'lilull-ps
Source: U.S. E.P.A., Chesapeake Bay Program
47
-------
Figure E.8.3
Low Intensity Urban Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C..DE,
WVANDVA
KJH M^> Dag lime. 1997
Source: U.S. E.P.A., Chesapeake Bay Program
48
-------
Figure E.8.4
Herbaceous Urban Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C.DE,
WVANDVA
KM Map Car, lunc. 1997
Source: U.S. E.P.A., Chesapeake Bay Program
49
-------
Figure E.8.5
Woody Urban Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C.DE,
WVANDVA
KJH Map Dale June. 1997
Source: U.S. E.P.A., Chesapeake Bay Program
50
-------
Figure E.8.6
Exposed Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY. PA. MD. D.C.. DE,
WVANDVA
KM My Dag June. 1997
Source: U.S. E.P.A., Chesapeake Bay Program
51
-------
Figure E.8.7
Woody Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C..DE
WVANDVA
KM My Dae June. 1997
Source: U.S. E.P.A., Chesapeake Bay Program
52
-------
Figure E.8.8
Herbaceous Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C..DE
WVANDVA
KIH My Dag June, 1997
/srv7/khopldns/appendixe/pcfapiu2Q-ps
Source: U.S. E.P.A., Chesapeake Bay Program
53
-------
Figure E.8.9
Herbaceous Wetland Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY,PA.MD,D.C..DE,
WVANDVA
OH My Dag June. 1997
/gv7/ldiopkiDS/appa»dixdipdlplu70.p5
Source: U.S. E.P.A., Chesapeake Bay Program
54
-------
Figure E.8.10
Water Land Use
in the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF THE
Chesapeake Bay Watershed
NY.PA.MD.D.C..DE,
WVANDVA.
KM Map Dag June. 1997
Source: U.S. E.P.A., Chesapeake Bay Program
55
-------
Section E.9
Phase IV Watershed Model Land Use Classification
The Phase IV Chesapeake Bay Watershed Model land use classification encompasses a
more detailed accounting of agricultural land uses than the classification method used in the
CBPLU data. The following calculations were applied to deterrninejiailpf the PhaseJV
Watershed Model Land Use, using the CBPLU land usedata. The referenced Phase II land
use~replre^eTitsTrIe"PHa&e II WatersHedTVIddel land use9 described in section E.4.
Forest = CBPLU Woody + CBPLU Herbaceous Wetlands
Pervious Urban = (CBPLU High Intensity Urban * 0.15) + (CBPLU Low Intensity Urban
* 0.6) + (CBPLU Herbaceous Urban * 0.9) + (CBPLU Woody Urban * 0.9) +
(CBPLU Exposed * 0.6)
Impervious Urban = (CBPLU High Intensity Urban * 0.85) + (CBPLU Low Intensity
Urban * 0.4) + (CBPLU Herbaceous Urban * 0.1) + (CBPLU Woody Urban * 0.1)
+ (CBPLU Exposed * 0.4)
Water = CBPLU Water
For Phase IV Watershed Model segments 40, 50, 60, 80 and 160, Exposed Land is added to
Pasture rather that Urban.
Agricultural land use for the Phase IV Watershed Model(Table E.9.1), was calculated
using the CBPLU land use category of Herbaceous. The following description briefly
explains how the splits among the agricultural land use was performed. The Phase IV
Watershed Model land use data set is classified into eight categories; four of which are
agricultural in origin: Conventional Till, Conservation till, Hayland and Pasture. For the
Phase II 1985 CBPLU land use database, the number of acres of each of land use was
derived by securing cropland acres from the counties, then using information from the
Conservation Technology Information Center (CTIC)10 and information from the 1982 US
9 Hannawald, Jim. Land Use for the Chesapeake Bay Watershed Model. March 1990, U.S. EPA
Chesapeake Bay Program, CBP/TRS 39/90
10 Conservation Technology Information Center, West Lafayette, IN
56
-------
Census Bureau Agricultural Census" to determine the breakdown into High Till, Low Till,
and Hayland for 1985. The Phase IV Watershed Model used 1991 CBPLU, thus the number
of acres of each of land use was derived from the more recent 1987 US Census Bureau
Agricultural.12 For the Phase IV Watershed Model, agricultural statistics from the 1987
Agricultural Census were applied to the CBPLU Herbaceous land use. In addition, precise
definitions of cropland and pasture were adopted and applied to the 1987 Agricultural
Census data that was entered in the Phase IV Watershed Model land use data base.
The Phase II Watershed Model land use split of conventional and conservation tillage of
four crops was determined by data obtained from the 1985 Crop Tillage Data Base.13 The
Phase IV Watershed Model Conservation Till land use area was calculated in the same
manner. The Phase II Watershed Model land use split for Hayland and Pasture was
determined by 1982 Census of Agriculture. The Phase IV Watershed Model Hayland and
Pasture land use area were calculated in the same manner using the 1987 Census of
Agriculture information. The Phase IV Manure acres per model segment, as described in
section E.10, are deducted from the Pasture land use.
Given the limited number of land uses within the Phase IV Watershed Model, wetlands
were grouped with Forested land, as was done in Phase II. The Forest land use category was
chosen because simulation of forest nutrient cycling more accurately represents wetland
nutrient cycling than developed or agricultural land use nutrient cycling. Accordingly, the
Phase IV Watershed Model forest land use was calculated by summing the CBPLU Woody
land use category with CBPLU Herbaceous Wetland land use category.
The Phase IV Watershed Model Urban Pervious and Impervious land uses were
calculated, as in Phase II, by summing fractional CBPLU land use categories of High
Intensity Developed, Low Intensity Developed, Herbaceous Urban, Woody Urban and the
Exposed land use category. The Exposed land use category was included on the assumption
that it is a human impacted land use and is best represented in the model as an Urban land.
For the most part, the CBPLU Exposed land use category represents bare land cleared for
construction that would ultimately be converted to Low Intensity Urban. In these cases,
these lands are more accurately simulated as an urban land use. Strip mines and quarries are
the dominant source of Exposed land in Model segments 40, 50, 60, 80, and 160 (marked
with an asterisk in the Impervious Urban column of the table E.6.1). In these instances, the
11 1982 Census of Agriculture, Volume 1, Geographic Area Series, published by the U.S. Department of
Commerce, Washington, D.C
12 1987 Census of Agriculture, Volume 1, Geographic Area Series, published by the U.S. Department of
Commerce, Washington, D.C
13 Conservation Technology Information Center, West Lafayette, IN
57
-------
Exposed land use category is grouped with Pasture land use, as the state of Pennsylvania
requires all surface mined coal operations to be backfilled and graded within sixty days and
re-vegetated14. Pasture land use was selected for this aggregation because it is the least
managed herbaceous cover land use.
Water land use for the Phase IV Watershed Model was calculated, as in Phase II, using
the CBPLU land use category of Water. This land use represents non-tidal, inland water
bodies. While tidal water bodies do exist in the CBPLU database, these water bodies are
external to Phase IV Watershed Model boundary so they are not counted.
14 ^93 Pennsylvania Code. Title 25. Environmental Resources, Chapter 87. Surface Mining of Coal
pages 8, 7-31 through 8, 7-35
58
-------
Table E.9.1
1990 Phase IV Chesapeake Bay Watershed Model Land Use in Acres by Model Segment
Phase IV
Model Conven. Conserv. Hayland
Segment Till Till
Pasture Forest Pervious Impervious
Urban Urban
Water
Total
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
110860
171400
55816
87427
29732
68905
73835
162050
26746
92809
188619
37092
29224
15625
7487
16995
47876
10781
25855
69933
35292
20747
9575
31492
5160
23910
330
4129
30049
17247
21648
2312
2938
4340
10455
76040
12050
109017
137103
38080
129989
68170
66384
24815
1809
3230
37871
764
1731
11569
96178
8483
68199
67000
11645
9019
14040
11978
57216
11713
49932
54763
134294
20185
64826
155298
10247
34090
7620
2784
7526
47870
47739
38598
78274
44854
44546
4824
11160
9266
31329
413
13869
25562
8866
44761
9201
15500
10144
6542
63381
18314
60522 Vc
80011
8012
21422
17297
62558
33868
2048
2320
9855
517
1653
14543
46352
108
54168
66818
7799
240230
511789
203619
69767
49746
137116
86166
165139
65811
155815
135008
17828
20792
50990
41968
36129
61057
104824
93613
77291
58592
125513
9963
5571
22298
39450
8010
77251
147275
28197
65169
3170
7078
5691
3460
7611
•A 1124
V'' 5754
5760
1094
3756
463
52147
19249
1194
1464
12776
473
1168
36765
13032
123
12367
14220
3488
197768
429246
167237
83048
39292
114138
70745
131847
53146
114384
115439
13760
22633
96906
197582
86312
74218
263064
205332
65123
124782
265416
17655
15498
40612
67205
35221
245045
335235
55820
136158
10111
14456
12038
6453
31852
6647
26791
26597
6874
24117
10626
64673
37079
2567
2303
34416
984
2552
72719
45687
1235
36691
56579
9254
1030640
1874602
816205
572063
753229
2288217
527835
773519
412209
1065093
398895
44107
66702
654477
682492
644044
147235
513446
471294
188040
219799
516015
117378
144808
115943
291275
174233
1460219
1252138
185824
467985
71008
37232
53026
9740
75538
14754
83523
190393
62584
277100
90122
183277
129837
14693
28513
158228
12982
16733
158826
378361
27599
373088
438461
74219
59704
98467
84571
44958
16702
32977
18454
43055
8085
33610
77880
3834
1630
23010
9804
7082
17523
74007
47300
20860
78752
43333
3225
4851
5097
12949
1788
46629
93379
19353
17459
1230
4657
33023
396
5006
2501
9546
14879
12395
11402
9332
26431
26408
31577
34471
59772
9178
47847
75282
27175
1962
23938
117230
34577
31534
46243
40230
24492
7544
16208
9331
23444
3097
13302
43652
2205
793
11186
5117
3535
10473
21696
12877
11553
40983
8176
829
1463
1344
3348
794
18954
34112
8403
6723
579
1727
18972
134
1459
638
2854
5101
5686
2800
2452
12240
14557
24575
25281
15894
4403
31525
27740
8961
272
9968
70081
16647
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131939
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
213864
471369
223401
1873394
1932118
329249
764198
101143
85080
137505
37831
265178
57528
301305
463205
136584
477912
205385
474224
290900
78756
99261
33391 1
30276
103410
400535
625586
41420
588652
854137
158639
59
-------
Table E.9.1
1990 Phase IV Chesapeake Bay Watershed Model Land Use in Acres by Model Segment
Phase IV
Model Conven. Conserv.
Segment Till Till
Hayland Pasture
Forest Pervious Impervious Water
Urban Urban
Total
620
630
650
700
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
24862
1157
11429
9492
39999
90750
34273
56956
22324
9638
16294
14378
7489
38989
3422
17639
32590
407
618
780
6448
392
1053
7265
33820
8713
23379
271
8309
329
56914
2056
14177
116
16179
699
18401
16825
43370
55143
10724
5947
16418
9161
4681
11898
6409
19308
48093
4607
700
528
3461
2462
233
2851
24351
318
28757
2180
1332
290
11843
510
818
32
10902
30029
20530
41890
56703
95439
15631
9891
1474
715
2426
5573
401
1141
851
2022
408
483
3132
1035
1361
2944
10551
109
3122
1250
78
899
8608
388
10258
315
13712
20311
17070
29962
32920
167600
14861
11574
4756
2717
4572
14568
2162
8028
10901
3726
877
1006
7334
2052
4632
8318
38179
1686
14644
2386
1973
1207
22407
1228
======== =:
58099
4239
41471
87722
37534
71268
131184
452719
36564
34027
30482
16439
26342
30459
5814
22964
163152
26259
4707
8460
59233
8990
17899
70354
224543
17381
162692
20059
23663
26775
237765
9217
17318
7315
5276
3108
8522
30972
12603
28241
4118
5199
1720
1623
3435
1989
4713
9486
4701
11697
24122
9417
22341
22597
74498
48581
43598
1325
7790
19470
61861
4731
29531
4033
9006
4502
2395
1860
4901
20196
6723
13979
2453
2360
195
380
1078
746
1830
3120
1177
4462
25880
4834
10148
19968
41225
19569
10383
250
3214
13892
48435
2252
7615
1445
7034
562
2585
1851
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
175?
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
141572
18238
103950
155073
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141899
160878
393300
31801
250653
63043
153765
36732
383823
20978
2958309 3068805 3113345 4482919 24102614 2084353 1004066 485780 41300191
60
-------
Section E.10
Land Use Classification, by Major Basins of the Chesapeake Bay Watershed
Ten major sub-basins are part of the Chesapeake Bay Watershed: Susquehanna River
basin, Western Shore Maryland basin, Patuxent River basin, Potomac River basin,
Rapahannock River basin, York River basin, James River basin, Western Shore Virginia
basin, Eastern Shore Maryland basin, and Eastern Shore Virginia basin. Table E.I0.1 is a
compilation of the Chesapeake Bay Land Use data by Phase IV Watershed Model segment
and major basin. Figure E.10.1 shows the major basins of the Chesapeake Bay Watershed
with Phase IV model segments
61
-------
Figure E. 10.1
Major Basins of the Chesapeake Bay Watershed
with Phase IV Watershed Model Segments
LOCATION MAP
OF TOE
Chesapeake Bay Watershed
NY. PA. MD. DC. DE
WVANDVA
Lffl
Susquehanna River Basin
Potomac River Basin
Western Shore Maryland
Patuxent River Basin
Western Shore Virginia
Rappahannock River Basin
York River Basin
Eastern Shore Maryland
Eastern Shore Virginia
James River Basin
KJH M,pDae:)uiy.i997 /modgis/khopkins/maps/pmaibasins.ps
62
Source: U.S. E.P.A. Chesapeake Bay Program
-------
TableE. 10.1
Phase IV Chesapeake Bay Watershed Model Land Use Sorted by the Ten Major Subbasins' Data (in acres)
Bay
Watershed
Subbasin
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
EastShore
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
MD
Phase IV
Model
Segment
370
380
390
400
410
420
430
450
770
780
800
810
820
830
840
SUBBASIN TOTAL
EastShore
VA
440
SUBBASIN TOTAL
James
James
James
James
James
James
VA
VA
VA
VA
VA
VA
265
270
280
290
300
310
SUBBASIN TOTAL
James
James
James
James
VA
VA
VA
VA
600
610
620
630
SUBBASIN TOTAL
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
MD
MD, VA
MD, PA
MD.PA
VA,WV
VA, WV
MD, PA
MD, VA
MD, PA
MD, PA
MD, PA
160
170
175
180
190
200
210
220
730
740
750
SUBBASIN TOTAL
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
Potomac
DC, MD
VA
MD
VA
DC, MD
MD
VA
VA
540
550
890
900
910
920
970
980
SUBBASIN TOTAL
Rappahannock
Rappahannock
VA
VA
230
560
SUBBASIN TOTAL
Susquehanna
Susquehanna
NY, PA
NY, PA
10
20
Conven.
Till
10455
76040
12050
109017
137103
38080
129989
66384
16294
14378
7489
38989
3422
17639
32590
709920
68170
68170
330
4129
30049
17247
21648
2312
75715
67000
11645
24862
1157
104664
15625
7487
16995
47876
10781
25855
69933
35292
34273
56956
22324
343396
1731
11569
392
1053
7265
33820
329
56914
113073
20747
96178
116925
110860
171400
Conserv.
Till
6542
63381
18314
60522
80011
8012
21422
62558
16418
9161
4681
11898
6409
19308
48093
436731
17297
17297
413
13869
25562
8866
44761
9201
102672
66818
7799
14177
116
88909
7620
2784
7526
47870
47739
38598
78274
44854
43370
55143
10724
384501
1653
14543
2462
233
2851
24351
290
11843
58227
44546
46352
90899
9019
14040
Hayland
3460
7611
1124
5754
5760
1094
3756
52147
1474
715
2426
5573
401
1141
851
93288
463
463
8010
77251
147275
28197
65169
3170
329071
14220
3488
818
32
18558
50990
41968
36129
61057
1 04824
93613
77291
58592
56703
95439
15631
692237
1168
36765
1035
1361
2944
10551
899
8608
63331
125513
13032
138546
240230
511789
Pasture
6453
31852
6647
26791
26597
6874
24117
64673
4756
2717
4572
14568
2162
8028
10901
241707
10626
10626
35221
245045
335235
55820
136158
10111
817591
56579
9254
10258
315
76406
96906
197582
86312
74218
263064
205332
65123
124782
32920
167600
14861
1328701
2552
72719
2052
4632
8318
38179
1207
22407
152066
265416
45687
311103
197768
429246
Forest
9740
75538
14754
83523
190393
62584
277100
183277
30482
16439
26342
30459
5814
22964
163152
1192561
90122
90122
174233
1460219
1252138
185824
467985
71008
3611406
438461
74219
58099
4239
575018
654477
682492
644044
147235
513446
471294
188040
219799
131184
452719
36564
4141294
16733
158826
8990
17899
70354
224543
26775
237765
761885
516015
378361
894375
1030640
1874602
Pervious
Urban
396
5006
2501
9546
14879
12395
11402
26431
1720
1623
3435
1989
4713
9486
4701
110223
9332
9332
1788
46629
93379
19353
17459
1230
179838
117230
34577
17318
7315
176441
23010
9804
7082
17523
74007
47300
20860
78752
12603
28241
4118
323298
47847
75282
22597
74498
48581
43598
4731
29531
346666
43333
27175
70509
59704
98467
Impervious
Urban
134
1459
638
2854
5101
5686
2800
12240
195
380
1078
746
1830
3120
1177
39438
2452
2452
794
18954
34112
8403
6723
579
69565
70081
16647
9006
4502
100236
11186
5117
3535
10473
21696
12877
11553
40983
6723
13979
2453
140574
31525
27740
19968
41225
19569
10383
2252
7615
160277
8176
8961
17137
31534
46243
Water
651
4292
1500
3298
3361
1860
7326
6513
56
0
977
3787
2113
5366
15407
56505
6924
6924
2612
7300
14368
5540
4294
3532
37646
23749
1008
7034
562
32353
4795
2965
4164
3094
4772
5899
1952
7525
1079
5469
632
42346
201
3091
648
997
995
7875
249
9139
23195
3124
9840
12964
11288
30628
Total
37831
265178
57528
301305
463205
136584
477912
474224
71396
45414
51001
108009
26864
87052
276872
2880372
205385
205385
223401
1873394
1932118
329249
764198
101143
5223503
854137
158639
141572
18238
1172586
864608
950198
805788
409346
1040330
900768
513026
610577
318855
875545
107307
7396348
103410
400535
58144
141899
160878
393300
36732
383823
1678720
1026871
625586
1652457
1691043
3176414
63
-------
Table E. 10.1
Phase IV Chesapeake Bay Watershed Model Land Use Sorted by the Ten Major Subbasins' Data (in acres)
Bay
Watershed
Subbasin
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Susquehanna
Phase IV
Model
Segment
PA
PA
PA
PA
PA
PA
PA
PA
MD, PA
PA
MD,PA
PA
PA
PA
30
40
50
60
70
80
90
100
110
120
140
700
710
720
SUBBASIN TOTAL
WestShore
WestShore
WestShore
WesLShore
WestShore
WestShore
WestShore
WestShore
WestShore
MD
MD
MD
MD
MD
MD
MD
MD
MD
470
480
490
510
760
850
860
870
880
SUBBASIN TOTAL
WestShore
WestShore
WestShore
WestShore
MD
MD
MD
MD
330
340
500
990
SUBBASIN TOTAL
WestShore
WestShore
WestShore
WestShore
WestShore
WestShore
VA
VA
VA
VA
VA
VA
580
650
930
940
950
960
SUBBASIN TOTAL
York
York
York
York
York
VA
VA
VA
VA
VA
235
240
250
260
590
SUBBASIN TOTAL
Conven.
Till
55816
87427
29732
68905
73835
162050
26746
92809
188619
37092
29224
9492
39999
90750
1274755
24815
1809
3230
764
9638
407
618
780
6448
48509
2938
4340
37871
2056
47205
8483
11429
8713
23379
271
8309
60584
9575
31492
5160
23910
68199
138335
Conserv.
Till
11978
57216
11713
49932
54763
134294
20185
64826
155298
10247
34090
699
18401
16825
663526
33868
2048
2320
517
5947
4607
700
528
3461
797786
15500
10144
9855
510
36009
108
16179
318
28757
2180
1332
48874
4824
11160
9266
31329
54168
110748
Hayland
203619
69767
49746
137116
86166
165139
65811
155815
135008
17828
20792
30029
20530
41890
1951274
19249
1194
1464
473
9891
2022
408
483
3132
38315
7078
5691
12776
388
25933
123
10902
109
3122
1250
78
15586
9963
5571
22298
39450
12367
89650
Pasture
167237
83048
39292
114138
70745
131847
53146
114384
115439
13760
22633
20311
17070
29962
1620026
37079
2567
2303
984
11574
3726
877
1006
7334
67451
14456
12038
34416
1228
62138
1235
13712
1686
14644
2386
1973
35635
17655
15498
40612
67205
36691
177661
Forest
816205
572063
753229
2288217
527835
773519
412209
1065093
398895
44107
66702
87722
37534
71268
10819839
129837
14693
28513
12982
34027
26259
4707
8460
59233
318711
37232
53026
158228
9217
257704
27599
41471
17381
162692
20059
23663
292866
117378
144808
115943
291275
373088
1042490
Pervious Impervious
Urban
84571
44958
16702
32977
18454
43055
8085
33610
77880
3834
1630
3108
8522
30972
566529
26408
31577
34471
9178
5199
11697
24122
9417
22341
174410
4657
33023
59772
4033
101486
1962
5276
1325
7790
19470
61861
97685
3225
4851
5097
12949
23938
50060
Urban
40230
24492
7544
16208
9331
23444
3097
13302
43652
2205
793
1860
4901
20196
289033
14557
24575
25281
4403
2360
4462
25880
4834
10148
116500
1727
18972
15894
1445
38038
272
2395
250
3214
13892
48435
68458
829
1463
1344
3348
9968
16952
Water
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
1851
8062
1907
194640
5086
293
1679
975
386
1752
1741
1748
3355
17013
1491
271
5099
2100
8962
1637
2585
2018
7054
3535
8114
24944
976
1033
14144
1903
10233
28289
Total
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131939
185897
155073
155020
303770
17379621
290900
78756
99261
30276
79021
54933
59053
27257
115451
834907
85080
137505
333911
20978
577474
41420
103950
31801
250653
63043
153765
644632
164424
215877
213864
471369
588652
1654186
64
-------
Section E.ll
Patapsco Basin
As a consequence of Phase IV Watershed Model improvements regarding processes
simulation, a reevaluation of the Patapsco River basin watershed model segmentation was
performed. The new approach took into consideration the fact that, almost 100% of the
water stored at Liberty reservoir serves as Baltimore City water supply, and consequently no
loading is released below the reservoir into the Patapsco. Segment 760 containing the
Liberty Reservoir was re-segmented into segment 650 and a new segment 760. Segment
650 includes the area upstream of Liberty Reservoir, and loads from this segment's land uses
are not added to the Patapsco River. Segment 760 and segment 490 are the remaining area
within the Patapsco River basin, which includes the west branch of the Patapsco River and
the Patapsco River basin downstream of the reservoir.
The re-segmentation was developed by applying GIS methodologies. Through editing the
segments cover, and using streams covers in the area as backdrops, it was possible to digitize
an appropriate re-segmentation for the basin. The total area in the basin is the same as it was
previously, but the simulated area is different. The benefit of this approach is to have a more
accurate accounting for loading and flow in the segments.
Table E.I 1.1
Phase IV Watershed Model Land Use for the Above Fall Line
Phase IV Watershed Model Segments -
Patapsco River Basin
Segment
650
760
Total
Ratios
Segment
650
760
Total
Pasture
17939.39
12713.88
30653.27
Pasture
0.5852
0.4148
1
Cons.Till
17966.3
12732.95
30699.25
Cons.Till
0.5852
0.4148
1
Cons.Till
17966.3
12732.95
30699.25
Conv.Till
6776.22
4802.397
11578.617
Hay
9622.22
6819.39
16441.61
Forest
41464.26
34028.89
75493.15
P.Urban
5267.14
5205.66
10472.8
I.Urban
2420.53
2329.214
4749.744
Water
1336.95
1634.05
2971
Total
102793.01
80266.431
183059.441
Conv.Till
0.5852
0.4148
1
Hay
0.5852
0.4148
1
Forest
0.5492
0.4508
1
P.Urban I.Urban Water
0.5029 0.5096 0.4500
0.4971 0.4904 0.5500
1 1 1
65
-------
Figure E.11.1
Patapsco River Basin
Phase IV Watershed Model Segments
Chesapeake Bay Watershed
Patapsco River Basin in the
Western Shore Basin Segmentation
/V Model Segments
/V Patapsco Basin Streams
/modgis/khopkins/maps/ppatap.ps
Source: U.S. E.P.A. Chesapeake Bay Program Modeling Team
66
-------
Figure E.I 1.2
Patapsco Basin Segmentation—Phase II
PATAPSCO RIVER BASIN
OF THE
CHESAPEAKE BAY WATERSHED
Km Map Dale: July. 1997
Source: U.S. E.P.A. Chesapeake Bay Program Modeling Team
Patapsco Basin Segmentation—Phase IV
Patapsco River Basin in the
Western Shore Basin Segmentation
K1H Map Dae: July. 1997
Source: U.S. E.P.A. Chesapeake Bay Program Modeling Team
67
/rnodgis/khopldns/maps/3ppendixc/ppaiap24.ps
-------
Section E.12
Phase IV Chesapeake Bay Watershed Model Land Use Estimation and Projection
Methodologies
This section illustrates the methodologies used to create Phase IV Watershed Model land
use data sets for years projected and backcasted from 1990 Phase IV Chesapeake Bay
Watershed Model land use data base. Population projections developed by the Chesapeake
Bay Program Office, are documented in the report: Population Estimates and Projections
for States, Counties, and Modeling Segments in the Chesapeake Bay Watershed15, and are
used as part of the basic information in the development of these land use databases. Two
methodologies were employed to project land use data sets from 1990. These methodologies
are explained in greater detail in the report Land Use Estimation and Projection
Methodologies for Phase IV of the Chesapeake Bay Program Watershed Model16. The first
methodology, termed hindcast in this report, was used to create the 1985 land use data set
and further modified to create the 1985 "All Forest" data set. The second methodology was
used to create forecasted land use data sets for the years 1991,1993,1995,2000,2005,2010,
2015, and 2020.
For the incorporation of manure acres into the hindcasted and forecasted land use
database, it was necessary to develop estimates and projections of manure through time, as
explained in section E.I5. These values were then subtracted from the corresponding year
and segment value for the pasture land use.
The "all forest" and " 1985 reference" scenarios were used to define controllable loads
under the Phase IV Watershed Model. To develop the 40% controllable loads, it was
necessary to determine the loading contribution by the CBPO signatory states. Loading from
non-Signatory States, are considered uncontrollable loads. This 40% controllable load is
obtained by getting 40% out of the subtraction between the Reference Scenario loads and the
All Forest Scenario loads. In order to obtain these controllable loads, it was necessary to
develop a land use distribution data between signatory and non-signatory states.
15 Burch, B. ed. Population Estimates and Projections for States. Counties and Modeling Segments Within
the Chesapeake Bay Watershed. Chesapeake Bay Program Data Center. 1996.
16 Land Use Estimation and Projection Methodologies for Phase IV of the Chesapeake Bay Program
Watershed Model. Chesapeake Bay Program. Technology Transfer Report. 68. DRAFT. April, 1997.
68
-------
When the land contained in a WSM segment is 100% within a signatory state all land
uses in the segment are simulated as forest. However, parameterization of each of the land
uses remains as original. When a portion of land contained in a WSM segment, is within
a non-signatory state, the methodology described above is applied to the signatory state area
while the non-signatory state area remains as is.
The information contained in this table was developed through the combination of the
Chesapeake Bay Program Land Use data (CBPLU_gurb), the states' boundary cover and the
PIV Watershed Model (WSM) segmentation cover. For the distribution of agricultural land
use, ratios for crop land were developed on the basis of 1985 land use, and applied to the "all
forest" scenario land.
69
-------
Table E.12.1
Phase IV Chesapeake Bay Watershed Model
Hindcasted 1985 Land Use
Model
Segment
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
1985
FOREST
Acres
1030311
1875262
815071
571435
752445
2288762
527985
774542
412307
1064972
400488
44259
66757
653824
682746
644384
147859
516156
473858
189483
226598
518789
117924
144987
116295
292159
174067
1459340
1255376
187292
468344
71072
37643
57021
9749
75685
14854
83684
190917
63234
277727
90021
184706
130647
14098
31124
161676
13724
19735
167413
381134
27654
375487
446048
77035
58651
4626
41793
87676
37750
1985
CONV. TILL
Acres
141286
244841
64111
125103
38268
78436
84676
164182
25047
111329
172501
26688
27341
15266
12674
16104
23393
22841
33535
35613
10640
42317
10694
7364
12997
22616
365
3243
26535
16271
45767
12296
4087
6018
6297
30839
12079
85165
87661
31496
58758
54689
51282
23727
1530
1665
39689
499
2348
6129
117567
7005
74208
83496
7150
19162
757
11757
11560
30873
1985
CONS. TILL
Acres
13462
12890
14022
51598
6910
60825
62370
158937
29845
75127
203746
23263
41272
9893
5088
11925
86631
49697
57023
116323
101047
59725
10967
41735
7358
41130
709
15676
43973
19540
54635
2765
19876
12532
12783
131641
23293
103179
143792
17516
105878
38171
92358
41251
2482
4014
18107
1189
2802
32838
51347
2498
67379
75684
15715
26638
908
20209
319
31245
1985
PASTURE
Acres
173557
373334
161028
52491
37011
101775
61045
112921
50545
102936
94701
12168
19011
99444
192860
86195
69883
273079
200685
74690
114778
248081
12289
10668
37517
64376
35336
261779
341088
50339
118875
7006
12272
10230
4640
10021
1911
9278
14457
4848
11830
3062
54925
32351
2163
2940
31225
831
2801
68897
23302
399
21108
36039
7453
4387
69
11428
20163
14936
1985
PERVIOUS
Acres
60036
97748
85753
45575
17336
32552
18300
41884
7986
33732
75337
3565
1534
23564
9575
6803
16521
70171
43731
18495
68918
38935
2634
4653
4633
11856
1932
47399
89989
17723
17052
1172
4036
28945
368
4621
2214
9123
13977
11563
10574
9496
24145
25422
32085
32472
55415
8572
45269
63649
23981
1897
21465
110266
31852
16642
6983
4776
3157
8034
1985
HAYLAND
Acres
228834
494100
198367
67782
48071
128767
77265
157394
60287
137778
125190
16849
19060
46238
39259
32700
51843
82738
73897
65843
45122
108416
8253
4029
19680
34240
7522
59302
127837
24825
48582
2743
4164
5844
3209
6671
1103
4805
4160
736
3135
522
48832
18354
1128
1544
7956
375
421
35026
10483
67
9805
12904
3085
390
34
9234
28383
19290
1985
MANURE
Acres
561
1707
511
157
87
376
236
680
203
615
600
229
143
128
34
116
248
305
235
384
84
136
10
4
18
25
1
89
79
26
82
6
13
15
8
61
9
46
88
25
88
5
281
48
6
6
9
0
7
38
26
0
28
34
5
14
1
0
75
209
1985
IMPERV.
Acres
31709
45905
40792
24829
7831
15999
9253
22806
3059
13350
42227
2051
746
11456
4998
3396
9874
20572
11905
10243
35865
7346
677
1404
1221
3066
858
19267
32874
7695
6566
551
1496
16629
125
1347
565
2727
4792
5304
2597
2495
11181
14014
24970
23816
14735
4112
29826
23454
7907
263
8938
65917
15335
8654
4298
2168
1890
4621
1985
WATER
Acres
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
8062
1985
Total
Land Use
1691053
3176434
1400373
951277
914479
2725467
849373
1460043
600180
1547330
1132573
132058
186037
864768
950368
805963
40952&
1040520
900968
513236
610797
1027101
164659
216117
214114
471629
223666
1873664
1932398
329539
764497
101453
85410
137845
38201
265558
57918
301704
463615
137004
478342
205825
474674
291369
79236
99751
334411
30786
103950
401085
626146
42000
589242
854737
159249
142192
18868
104600
155773
155730
70
-------
Table E.12.1
Phase IV Chesapeake Bay Watershed Model
Hindcasted 1985 Land Use
Model
Segment
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
1985
FOREST
Acres
72297
131448
454577
36721
34371
30535
16489
26536
30496
6074
23303
163128
27398
4429
9168
61223
9565
26245
72181
229068
17415
163492
21573
29549
27818
241184
9668
1985
CONV. TILL
Acres
65234
36846
25895
11627
7321
13224
6472
4543
5905
3680
17094
35566
1453
513
523
4796
351
947
11294
47268
7651
45478
2749
4171
112
54163
1600
1985
CONS. TILL
Acres
48550
47837
54715
30311
13246
22686
18580
9211
53361
8228
26142
51677
4688
832
1245
7762
3872
1532
1270
22734
2471
13485
1006
9626
872
25735
1383
1985
PASTURE
Acres
27396
33042
217281
8271
10626
1807
1494
3273
6918
655
2254
4048
3195
723
871
6221
1996
5841
7530
30628
644
8672
1686
548
1148
14973
1062
1985
PERVIOUS
Acres
28782
12211
25967
3849
4705
1612
1516
3180
1901
4127
8718
4730
10534
24331
8795
20502
22090
66940
46883
38203
1279
6981
18318
56928
3952
25673
3550
1985
HAYLAND
Acres
40233
49598
78584
13563
6161
1280
498
2271
4896
379
1298
1110
1879
378
393
2279
98
2352
1836
8402
81
2604
1105
229
697
6331
340
1985
MANURE
Acres
603
281
202
41
69
12
10
12
32
5
11
21
15
5
0
1
5
1
4
23
0
6
0
27
3
5
2
1985
IMPERV.
Acres
18768
6514
12854
2292
2136
182
355
998
713
1603
2867
1184
4018
26103
4515
9312
19519
37042
18885
9098
241
2880
13070
44573
1882
6621
1272
1985
WATER
Acres
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
1985
Total
Land Use
304490
319585
876285
108057
79781
72166
46194
51801
108819
27684
87882
277712
55783
59913
28127
116331
59034
142798
161788
394219
32731
251593
63993
154725
37702
384803
21968
71
-------
Table E.12.2
Phase IV Chesapeake Bay Watershed Model
Land Use for the "All Forested Watershed
Signatory Jurisdictions" Scenario for the
Area of Model Segments within Non-Signatory States
jgment Forest Conven. Conserv.
10
20
60
70
75
80
200
270
370
380
400
410
420
430
740
770
780
800
810
687479
1700169
286674
632325
429161
6337
30069
40871
1028
14617
5415
107796
125
15119
161764
22753
16489
2968
1556
Till
91374
225208
8192
11495
11767
2226
3544
71
1725
2505
4196
54211
272
3738
13702
9184
6472
1451
326
Till
8706
11856
5309
4614
8713
8243
6026
343
3501
10693
50842
88922
151
6735
30096
15755
18580
2941
2947
Pasture
112213
343192
53403
174918
63014
6661
21207
5720
1273
819
457
8995
42
758
77114
1251
1494
1048
384
Hay Pervious Imperv. Manure
147994
454481
24813
35607
23892
4933
7810
1297
879
542
237
2573
6
199
31879
889
498
725
270
Urban
48859
91405
10262
9271
5543
726
22717
93
44
2239
123
9386
86
82
9015
937
1516
298
71
Urban
25806
42926
4022
4839
2767
3021
1278
38
15
93
37
3218
40
6
4463
119
355
94
27
394
Mil
32
29
48
12
27
4
1
4
2
60
0
20
14
8
10
1
0
72
-------
Table E.12.3
Phase IV Chesapeake Bay Watershed Model
Land Use for the "All Forested Watershed-Signatory Jurisdictions" Scenario for the Area of
Model Segments within Signatory States
Seg Forest Conven. Conserv. Pasture Hay
Till Till
Pervious Imperv. Manure
Urban Urban
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
342832
175093
815071
571435
752445
2288762
527985
774542
412307
1064972
400488
44259
66757
367150
50421
215223
141522
516156
443789
189483
226598
518789
117924
144987
116295
292159
174067
1419350
1255382
187298
468344
71072
37643
57021
8721
61068
14854
78269
83121
63109
262608
90021
49912
19633
64111
125103
38268
78361
84676
164182
25047
111329
172501
26688
27341
7074
1179
4337
21167
22841
29991
35613
10640
42317
10694
7364
12997
22616
365
3175
31375
16271
46061
12296
4087
6018
4572
28334
12079
80969
33450
31224
55020
54689
4756
1034
14022
51598
6910
60767
62370
158937
29845
75127
203746
23263
41272
4584
474
3212
78388
49697
50997
116323
101047
59725
10967
41735
7358
41130
709
15348
62706
19541
55770
2765
19876
12532
9282
120948
23293
52337
54870
17365
99143
38171
61511
30072
161540
52648
37099
102179
61281
113601
50748
103551
95301
12398
19155
46137
17947
23249
63458
273383
179686
75073
114861
248218
12299
10672
37535
64401
35337
256280
341048
50367
118958
7012
12286
10245
3375
9259
1920
8865
5490
4831
11140
3067
80840
39619
198367
67782
48071
128871
77265
157394
60287
137778
125190
16849
19060
21425
3652
8808
46909
82738
66087
65843
45122
108416
8253
4029
19680
34240
7522
58057
104176
24825
47153
2743
4164
5844
2330
6129
1103
4568
1587
730
2936
522
17080
9322
126546
70403
25166
48552
27553
64691
11045
47082
117564
5616
2280
20736
463
1889
22648
90743
31641
28739
104783
46282
3312
6057
5854
14921
2790
65452
123064
25531
23618
1723
5533
45575
434
3636
2779
11690
6165
16742
13083
11991
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
73
-------
Table E.12.3
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
720
730
740
750
760
770
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
184706
130647
14095
31134
161676
13724
19747
167438
381162
27654
375490
446260
77036
58665
4632
41472
87676
37750
72297
131448
292813
36721
34026
7782
23568
28940
6074
23303
163128
27398
4428
9168
61223
9567
26291
72187
229068
17415
163492
21579
29598
27818
241184
9668
51282
23727
1529
1649
39689
499
2350
6130
117576
7005
74208
81848
7150
19166
758
11060
11560
30873
65234
36846
20074
11627
7833
4040
3092
5579
3680
17094
35566
1453
513
523
4796
351
949
11295
47268
7651
45478
2750
4178
112
54163
1600
92358
41251
2482
3975
18107
1189
2804
32843
51351
2498
67380
74190
15715
26645
909
19953
319
31245
48550
47837
44093
30311
14132
6931
6270
50414
8228
26142
51677
4688
832
1245
7762
3872
1534
1270
22734
2471
13485
1007
9642
872
25735
1383
55206
32399
2169
2918
31234
831
2810
68945
23329
400
21137
35360
7458
4401
70
12120
20238
15145
27999
33323
112999
8312
8584
560
2236
6566
660
2264
4069
3210
727
871
6222
2001
5853
7535
30651
645
8679
1686
576
1150
14978
1064
48832
18354
1128
1529
7956
375
421
35031
10484
67
9805
12764
3085
390
34
9179
28383
19290
40233
49598
46705
13563
6501
391
1546
4626
379
1298
1110
1879
378
393
2279
98
2356
1836
8402
81
2604
1106
229
697
6331
340
35326
39436
57346
56376
70150
12683
75392
87351
32217
2160
30432
179971
47203
25935
11455
7671
5047
12655
47550
18725
25343
6141
7559
739
3786
2516
5729
11585
5915
14552
50570
13310
29814
41716
104554
65960
47301
1520
9861
31503
102342
5834
32294
4823
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
74
-------
Table E.12.4
Phase IV Chesapeake Bay Watershed Model
Forecasted 1991 Land Use
Model
Segment
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
1991
FOREST
Acres
1030419
1874185
816047
571915
753215
2287771
527743
773027
412153
1064886
398159
44069
66682
654418
682365
643842
146994
512687
470606
187632
218672
515223
117230
144677
115814
290928
174255
1459783
1251157
185412
467739
70959
37158
52072
9736
75501
14735
83495
190187
62388
276998
90106
182774
129510
14692
27836
156970
12807
16162
157293
377463
27567
372371
436418
73531
57961
4107
41378
87703
37469
1991
CONV. TILL
Acres
107220
138503
54473
81770
29766
67057
72948
153131
27482
95432
239707
39530
43897
16186
7920
17355
38428
17361
33470
70461
14684
23687
7318
28108
5884
40582
218
2857
31000
16829
23392
7719
2934
3842
9946
72772
14867
119925
101139
37181
119759
84019
70706
24747
1656
1605
34635
657
1641
5531
83635
6679
47840
98092
15094
34659
141
11102
9426
47121
1991
CONS. TILL
Acres
9745
11875
13308
62835
11678
51830
55628
143025
19442
62172
103575
7768
19398
7057
2349
7159
57160
41073
30889
77425
65051
41506
7062
14506
8526
14592
526
15134
24550
9226
42983
3786
15467
10381
7045
66580
15459
49557
115740
8768
31597
1434
57881
33789
2201
2595
12713
606
1628
20329
58558
1903
74293
35102
4170
4287
1138
16444
763
11178
1991
PASTURE
Acres
200096
462807
166752
82886
39210
113692
70534
131070
52932
113726
114613
13511
22482
96774
197507
86171
73861
262359
204809
64649
124083
264895
17626
15482
40554
67109
35226
244889
334941
55685
136020
10100
14419
11812
6445
31785
6632
26739
26476
6828
24029
10620
64237
36948
2562
3309
34134
971
2461
71986
45571
1233
36600
56268
9166
10218
252
13681
20240
16824
1991
PERVIOUS
Acres
59926
98921
84736
45103
16713
33324
18548
43617
8141
33819
79054
3901
1665
23059
9917
7247
17911
75081
48258
21528
80382
44588
3384
4996
5267
13377
1768
47011
94407
19810
17738
1275
4770
33998
406
5103
2553
9621
15233
12645
11537
9358
27236
26805
31578
34988
61362
9322
48338
77358
28209
2000
24677
119106
35244
17488
7428
5422
3128
8670
1991
HAYLAND
Acres
240179
511675
203579
69749
49745
137081
86151
165034
65803
155785
134759
17812
20786
50985
41960
36117
60957
104669
93476
77123
58292
125321
9951
5566
22274
39403
8011
77228
147153
28135
65135
3167
7064
5588
3459
7607
1123
5752
5754
1091
3754
463
52004
19200
1194
1583
12674
.466
1128
36410
13001
123
12344
14154
3455
816
38
10878
30023
20495
1991
MANURE
Acres
519
1364
453
140
82
358
199
693
206
635
613
237
145
124
38
114
235
316
224
333
59
114
6
2
13
17
1
82
56
11
66
5
8
9
6
51
7
43
92
24
79
4
258
38
5
4
8
0
4
31
7
0
20
48
3
15
0
0
66
217
1991
IMPERV.
Acres
31651
46456
40309
24571
7549
16379
9379
23750
3119
13384
44311
2244
810
11210
5176
3618
10705
22011
13138
11923
41831
8413
870
1507
1389
3459
785
19110
34488
8601
6831
600
1769
19532
137
1487
652
2876
5222
5801
2833
2459
12613
14776
24576
25661
16316
4472
31848
28505
9301
277
10275
71202
16968
9094
4571
2461
1872
4986
1991
WATER
Acres
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
8062
1991
Total Area
Acres
1691053
3176434
1400373
951277
914479
2725467
849373
1460043
600180
1547330
1132573
132059
186037
864768
950368
805963
409526
1040520
900968
513236
610797
1027101
164659
216117
214114
471629
223666
1873664
1932398
329539
764498
101453
85410
137845
38201
265558
57918
301704
463615
137004
478342
205825
474674
291369
79236
99751
334411
30786
103950
401085
626146
42000
589242
854737
159249
142192
18868
104600
155773
155730
75
-------
Table E.12.4
Phase IV Chesapeake Bay Watershed Model
Forecasted 1991 Land Use
Model
Segment
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
1991
FOREST
Acres
71015
131045
452098
36505
33927
30461
16417
26274
30444
5770
22875
163165
25821
4641
8293
58671
9200
16607
69917
223447
17373
162579
19479
23314
26580
236347
9074
1991
CONV. TILL
Acres
90938
31200
52329
24289
6780
18150
7841
7173
35340
3442
26394
32276
1175
558
667
5625
459
387
6750
30078
7296
17669
2051
1005
142
52284
1860
1991
CONS. TILL
Acres
16254
46360
59616
8705
11444
14540
15667
4966
15523
6315
10409
48414
3756
742
616
4190
2461
898
3303
27809
1730
34431
329
8421
472
16063
666
1991
PASTURE
Acres
29232
32576
167165
14797
12348
4742
2703
4552
14534
2142
7990
10883
3654
862
986
7264
2097
4151
8264
37971
1685
14632
2317
1859
1197
22271
1207
1991
PERVIOUS
Acres
31512
12809
29001
4221
5342
1764
1670
3525
2025
4812
9688
4684
12144
24171
9565
22860
22412
75668
48988
44904
1337
7904
19911
62153
4877
31132
4186
1991
HAYLAND
Acres
41741
56643
95309
15606
6312
1473
714
2420
5570
398
1137
851
1989
403
473
3102
1060
1318
2926
10499
109
3120
1214
214
892
8557
382
1991
MANURE
Acres
624
309
205
40
57
11
11
8
27
4
7
19
10
4
0
0
3
0
3
22
0
2
0
21
2
2
2
1991
IMPERV.
Acres
20548
6833
14355
2514
2425
199
390
1106
760
1869
3186
1173
4632
25932
4910
10384
19804
41872
19733
10694
252
3261
14207
48664
2322
8028
1500
1991
WATER
Acres
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
1991
Total Area
Acres
304490
319585
876285
108057
79781
72166
46194
51801
108819
27684
87882
277712
55783
59913
28127
116331
59034
142798
161788
394219
32731
251593
63993
154725
37702
384803
21968
23968390
3079884
2068539 4923574 2241321 3449131
9901 1073672 485780 41300191
76
-------
Table E.12.5
Phase IV Chesapeake Bay Watershed Model
Forecasted 1993 Land Use
1993 1993 1993 1993 1993 1993 1993 1993 1993 1993
Model FOREST CONV. TILL CONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
1030184
1873963
816062
571857
753097
2287123
527456
772402
412059
1064583
397211
44025
66656
654451
682152
643586
146627
511594
469566
186855
216366
514241
116963
144523
115617
290363
174251
1459223
1249101
184684
467242
70896
37032
50601
9732
75451
14713
83424
189834
62146
276732
90087
182159
129164
15176
26729
155657
12450
15590
154514
375911
27526
370932
433276
72322
57577
3756
41249
87675
111540
146091
53835
90307
31965
80442
85734
157181
31725
111967
228415
40174
47809
13264
7827
14356
36004
27262
30700
80833
27198
30920
8334
28931
4532
31662
348
4254
15285
14819
30566
8472
4659
5121
9158
75154
14483
112837
105389
38192
115301
86177
72218
23712
1403
2203
43053
973
2129
9534
93453
6696
79424
101142
13651
30933
1220
14723
10139
7453
14759
12093
70067
11403
45550
48908
149823
17554
55926
130669
8474
19512
5893
2679
6111
55381
33386
23960
96436
46723
39056
5300
17255
6786
21134
418
12339
21718
11106
23344
2398
15730
11118
9798
82880
19840
72481
126687
11253
48990
4825
66811
39312
2726
2291
13631
359
1579
11380
57008
2110
49993
39726
5639
12291
70
20693
178
204924
459763
164222
71614
36633
108454
64521
118645
47483
101881
98644
12645
18703
98116
191967
84744
77336
262608
213714
42415
123474
254630
16916
11356
40986
65872
34780
242320
336022
52122
142110
9977
11631
8834
4975
16194
3032
12014
12401
3230
11844
5281
55953
33259
2575
2704
25996
858
1889
75256
35044
1024
29685
44743
7609
5682
116
6639
20167
60164
99163
84721
45160
16808
33830
18841
44332
8237
34123
80566
3979
1710
23031
10108
7457
18501
76628
49705
22801
83717
46144
3672
5167
5527
14075
1772
47502
96560
20619
18302
1333
4961
35499
419
5232
2617
9808
15841
12954
11889
9388
28220
27226
31164
35836
63022
9614
48829
81122
29998
2049
26159
121990
36414
17958
7728
5622
3158
233209
504228
207989
65228
50379
135115
85955
166126
68858
157212
133509
17246
20498
53739
47185
41534
61116
101293
93472
68790
61957
129942
11314
6054
24803
42706
8433
81067
163743
31401
71230
3904
7731
5658
2953
4402
670
4468
4169
984
2835
233
49029
18098
1160
1532
10689
437
1018
35716
14440
94
11316
16534
4462
743
29
9887
29951
505
1250
433
135
80
353
186
698
207
642
618
240
145
122
40
114
230
320
220
316
51
107
5
1
11
14
0
80
49
6
61
5
6
7
5
47
6
42
93
23
76
4
250
34
4
3
7
0
3
29
1
0
17
52
2
16
0
0
64
31777
46570
40301
24602
7592
16627
9527
24139
3155
13504
45158
2289
832
11197
5276
3722
11058
22465
13531
12628
43567
8706
944
1558
1457
3640
787
19309
35274
8952
7048
627
1839
20395
141
1525
668
2932
5431
5942
2920
2467
13069
15008
24254
26283
16758
4612
32172
29892
9891
284
10892
72926
17531
9338
4756
2552
1890
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
1691053
3176434
1400373
951277
914479
2725467
849373
1460043
600180
1547330
1132573
132058
186037
864768
950368
805963
409526
1040520
900968
513236
610797
1027101
164659
216117
214114
471629
223666
1873664
1932398
329539
764498
101453
85410
137845
38201
265558
57918
301704
463615
137004
478342
205825
474673
291369
79236
99751
334411
30786
103950
401085
626146
42000
589242
854737
159249
142192
18868
104600
155773
77
-------
Table E.12.5
Phase IV Chesapeake Bay Watershed Model
Forecasted 1993 Land Use
1993 1993 1993 1993 1993 1993 1993 1993 1993 1993
Model FOREST CONV. TILL CONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
37387
70731
130901
451344
36443
33790
30432
16380
26182
30424
5709
22821
163142
25319
4926
7952
57622
9391
14288
69742
222630
17359
162285
18374
20943
26213
234349
8956
48585
91669
27401
46137
19828
6489
17657
8522
6664
33608
3856
22337
35051
2246
486
974
7816
868
287
8053
32434
7354
42841
2849
7871
223
41203
2110
11833
17441
50441
52524
14331
13610
17139
16601
6856
24756
6966
20037
52355
3101
944
359
2831
2243
115
4687
33577
2047
14078
0
1381
270
24672
701
15025
27994
30491
171733
13877
10539
2982
1283
3471
8651
1097
2848
4267
3042
890
859
6222
1884
4204
6151
29701
1321
9080
2255
885
1332
22872
892
8854
32116
13023
29922
4327
5539
1822
1748
3646
2073
4950
9809
4713
12656
23958
9864
23830
22243
77769
49150
45878
1357
8203
20753
64140
5150
33387
4312
19963
40340
58253
103399
15254
6099
1089
458
2053
3908
247
602
738
1980
402
437
2951
1208
1205
2299
10257
89
3727
472
193
840
9592
358
219
631
319
205
40
53
11
11
7
25
3
6
18
9
3
0
0
3
0
3
22
0
1
0
18
2
1
2
5092
20942
6947
14811
2577
2515
206
409
1144
778
1922
3226
1180
4827
25703
5063
10824
19655
43034
19799
10926
256
3384
14807
50220
2452
8610
1545
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
155730
304490
319585
876285
108057
79781
72166
46194
51801
108819
27684
87882
277712
55783
59913
28127
116331
59034
142798
161788
394219
32731
251593
63993
154725
37702
384803
21968
23922431
3231246
2148911 4634080 2294163 3476887
9649 1097043 485780 41300191
78
-------
Table E.12.6
Phase IV Chesapeake Bay Watershed Model
Forecasted 1995 Land Use
Model
Segment
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
1995
FOREST
Acres
1030485
1875318
816469
572039
753005
2286805
527139
771930
412007
1064483
396339
43977
66629
654403
681900
643391
146297
510108
468519
186098
214167
513260
116669
144364
115402
289692
174248
1458748
1247270
184110
466909
70856
36922
49111
9727
75398
14681
83363
189513
61941
276443
90066
181531
128802
15891
25645
153963
12075
14993
152317
374000
27506
369508
430802
71270
57018
3521
41086
87660
1995
CONV. TILL
Acres
114928
146812
54056
96972
32167
83939
93671
168367
28007
105669
233226
37230
45950
13377
7801
13603
35250
23553
33139
75791
22189
29327
7270
30187
3463
35710
153
3968
13905
12845
26167
7822
2678
3834
8474
71068
13314
98972
112557
37481
112303
84680
69332
19552
1076
1764
42308
841
1916
7234
86037
5464
67871
105075
13619
33099
1150
14014
10166
1995
CONS. TILL
Acres
4099
14154
11905
63453
11195
42036
40890
138449
21266
62209
125070
11365
21343
5779
2701
6857
55928
36920
21400
100760
50982
40516
6330
15947
7835
16964
613
12619
23043
13000
27704
3042
17651
11927
10473
86854
20935
86210
119126
11801
51817
6300
69218
43296
3247
2548
13760
450
1650
13383
63660
3335
61050
34989
5391
9705
60
21263
149
1995
PASTURE
Acres
204998
460210
164324
71643
36631
108444
64495
118568
47476
101864
98422
12629
18695
98110
191894
84719
77166
261841
213240
42259
122227
254151
16874
11344
40912
65722
34779
242244
335537
51965
142014
9971
11598
8575
4974
16186
3026
12006
12379
3220
11834
5280
55767
33170
2697
2595
25713
832
1817
74188
34867
1023
29573
44482
7499
5626
109
6612
20167
1995
PERVIOUS
Acres
59860
97688
84296
44980
16883
34078
19165
44873
8290
34223
81958
4064
1757
23073
10335
7617
19032
78732
51164
24042
86897
47699
3990
5343
5810
14906
1775
47918
98478
21257
18680
1370
5126
37020
430
5371
2708
9968
16393
13215
12271
9424
29226
27665
30554
36665
65162
9921
49341
84098
32199
2073
27626
124261
37431
18643
7929
5874
3173
1995
HAYLAND
Acres
233278
504592
208093
65249
50373
135096
85904
166024
68849
157197
133216
17227
20490
53735
47167
41521
60978
100999
93264
68511
61327
129694
11285
6048
24757
42607
8433
81041
163502
31303
71179
3901
7708
5492
2952
4399
669
4465
4162
981
2832
233
48860
18048
1215
1470
10573
423
979
35208
14367
94
11272
16439
4397
736
27
9849
29946
1995
MANURE
Acres
491
1136
414
129
78
347
174
702
208
649
623
242
146
121
41
113
225
324
216
299
43
100
4
0
9
12
0
78
41
1
56
4
5
5
4
44
5
41
94
23
73
4
243
31
4
2
6
0
3
27
0
0
15
57
1
16
0
0
61
1995
IMPERV
Acres
31616
45877
40099
24505
7626
16749
9691
24434
3176
13544
45938
2337
855
11217
5394
3802
11375
23082
13928
13315
45221
9000
1026
1612
1532
3854
788
19479
35975
9229
7193
644
1901
21269
145
1565
691
2980
5620
6062
3014
2476
13534
15250
23779
26891
17327
4759
32509
30989
10617
287
11503
74284
18021
9695
4880
2667
1899
1995
WATER
Acres
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
1995
Total Area
Acres
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131939
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
213864
471369
223401
1873394
1932118
329249
764197
101143
85080
137505
37831
265178
57528
301304
463205
136584
477912
205385
474224
290899
78756
99261
333911
30276
103410
400535
625586
41420
588652
854137
158639
141572
18238
103950
155073
79
-------
Table E.12.6
Phase IV Chesapeake
Forecasted
Model
Segment
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
1995 Land
1995
FOREST
Acres
37299
70425
130806
450571
36384
33617
30406
16346
26100
30408
5627
22709
163160
24797
5378
7594
56560
9864
12852
69378
221391
17346
161985
17765
21000
25909
232014
8795
Bay Watershed Model
Use
1995
CONV. TILL
Acres
45401
84318
28221
46339
22196
4969
19517
10645
6141
32970
3142
22757
31387
2375
389
830
7028
539
120
8834
34548
6367
34576
2370
8623
111
40786
1918
1995
CONS. TILL
Acres
14876
24320
49564,
52153
11908
15028
15250
14427
7338
25362
7525
19409
56030
2862
1173
444
3422
2729
241
3839
31095
3029
22238
384
655
377
24432
843
1995
PASTURE
Acres
14987
27863
30459
171438
13855
10489
2980
1280
3461
8648
1082
2835
4268
2980
973
820
6108
1980
3781
6119
29536
1321
9064
2181
889
1317
22645
876
1995
PERVIOUS
Acres
9052
32768
13164
30867
4428
5788
1876
1822
3753
2112
5135
10062
4690
13189
23619
10179
24811
21826
79069
49489
47355
1373
8506
21215
64092
5378
36022
4485
1995
HAYLAND
Acres
19916
40165
58211
103222
15229
6068
1088
457
2047
3906
244
599
738
1939
439
418
2897
1269
1084
2287
10200
89
3720
456
193
830
9496
351
1995
MANURE
Acres
221
638
329
206
39
49
10
11
6
24
3
5
18
7
3
0
0
2
0
2
21
0
0
0
16
1
0
2
1995
IMPERV
Acres
5206
21367
7022
15279
2637
2627
212
426
1178
792
1994
3309
1174
5031
25340
5225
11270
19286
43754
19935
11278
259
3509
15137
50182
2560
9289
1607
1995
WATER
Acres
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
1995
Total Area
Acres
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141898
160878
393299
31801
250653
63043
153765
36732
383823
20978
23884279 3169808 2197568 4625419 2340124 3472196
9403 1115614 485780 41300191
80
-------
Table E.12.7
Phase IV Chesapeake
Bay Watershed Model
Forecasted 2000 Land Use
Model
Segment
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
2000
FOREST
Acres
1029716
1873822
817073
572392
753238
2285920
527130
771513
411887
1063715
395921
43845
66590
653943
682089
643189
145715
509953
466630
184216
210724
510055
116489
144469
115334
289489
174383
1460191
1245643
183097
467121
70789
36656
45838
9718
75247
14583
83203
188755
61324
275919
90133
180026
128280
15741
23802
149549
11592
12557
144422
373771
27469
368306
425962
69166
56449
3488
40870
87656
2000
CONV. TILL
Acres
114842
146695
54096
97031
32177
83906
93670
168276
27999
105593
232980
37118
45924
13367
7803
13599
35110
23546
33005
75025
21832
29143
7259
30209
3461
35685
153
3972
13887
12774
26179
7814
2659
3579
8466
70926
13224
98782
112107
37108
112090
84743
68757
19472
1066
1637
41095
808
1605
6859
85984
5457
67650
103894
13217
32769
1139
13940
10166
2000
CONS. TILL
Acres
4096
14142
11913
63492
11199
42020
40889
138374
21260
62164
124938
11331
21330
5774
2701
6855
55706
36908
21313
99741
50162
40263
6320
15959
7830
16952
613
12632
23013
12929
27717
3039
17523
11133
10463
86680
20795
86044
118650
11684
51718
6305
68644
43120
3217
2365
13365
432
1382
12690
63621
3331
60851
34596
5232
9608
59
21151
149
2000
PASTURE
Acres
204879
460127
164494
71701
36647
108417
64525
118493
47460
101773
98306
12584
18682
98044
191944
84694
76869
261751
212389
41871
120281
252581
16851
11352
40892
65683
34807
242489
335118
51680
142092
9963
11519
8008
4971
16163
3008
11986
12326
3189
11819
5284
55322
33043
2673
2411
24977
799
1524
70346
34846
1022
29484
43971
7279
5568
108
6578
20172
2000
PERVIOUS
Acres
60636
99318
83668
44634
16695
34766
19175
45350
8412
34994
82625
4297
1825
23463
10164
7782
19968
78952
53793
27125
91876
52780
4184
5226
5900
15156
1658
46653
100181
22381
18440
1431
5530
40362
458
5765
2989
10390
17696
14004
12964
9314
31634
28301
30682
38076
70741
10316
51433
94793
32463
2118
28865
128703
39467
19340
7957
6211
3178
2000
HAYLAND
Acres
233104
504190
208247
65289
50389
135044
85902
165934
68829
157084
133075
17176
20478
53697
47180
41508
60736
100968
92888
67819
60341
128884
11268
6052
24742
42578
8440
81121
163289
31131
71212
3898
7652
5126
2949
4391
664
4457
4146
971
2826
233
48455
17975
1203
1364
10270
406
820
33384
14358
93
11236
16255
4268
728
27
9797
29945
2000
MANURE
Acres
456
851
365
115
73
332
143
713
211
666
634
248
147
117
45
112
214
334
206
256
23
82
1
0
5
5
0
72
22
0
43
4
0
0
2
35
3
39
97
21
66
3
224
22
3
0
5
0
0
21
0
0
8
68
0
17
0
0
54
2000
IMPERV.
Acres
32026
46642
39800
24316
7541
17087
9696
24693
3222
13849
46312
2472
888
11407
5305
3885
11934
23146
14644
15022
47813
9958
1076
1576
1556
3919
736
18964
36597
9718
7101
673
2050
23188
155
1680
763
3106
6067
6424
3184
2447
14650
15601
23879
27926
18810
4948
33888
34930
10704
294
12019
76939
19001
10057
4897
2819
1902
2000
WATER
Acres
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
2000
Total Area
Acres
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131939
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
213864
471369
223401
1873394
1932118
329249
764197
101143
85080
137505
37831
265178
57528
301304
463205
136584
477912
205385
474224
290899
78756
99261
33391 1
30276
103410
400535
625586
41420
588652
854137
158639
141572
18238
103950
155073
81
-------
Table E.12.7
Phase IV Chesapeake Bay Watershed Model
Forecasted 2000 Land Use
2000 2000 2000 2000 2000 2000 2000 2000
Model FOREST CONV. TILL CONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV.
Segment Acres Acres Acres Acres Acres Acres Acres Acres
2000 2000
WATER Total Area
Acres Acres
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
37152
69503
130688
448729
36267
33386
30339
16269
25904
30380
5344
22573
163076
23461
5206
7133
54777
9836
5637
66746
215954
17309
161237
17654
14954
24954
230882
8306
45222
83214
28196
46150
22125
4935
19474
10594
6095
32940
2984
22621
31370
2247
376
779
6806
538
53
8499
33699
6353
34416
2355
6140
107
40587
1812
14817
24001
49519
51940
11870
14925
15216
14358
7282
25339
7145
19292
56001
2707
1135
417
3315
2721
106
3693
30332
3022
22136
382
466
363
24313
796
14920
27473
30407
170734
13812
10426
2974
1274
3438
8644
1028
2821
4268
2823
942
771
5916
1976
1659
5888
28811
1318
9022
2167
633
1269
22534
828
9385
34731
13339
33121
4628
6119
2013
1988
4011
2180
5775
10371
4796
14553
23748
10585
26459
21851
85602
51936
53836
1425
9263
21300
69158
6090
37299
5008
19838
39639
58158
102800
15180
6026
1086
455
2031
3902
231
596
738
1835
425
392
2805
1266
476
2200
9949
88
3703
453
138
800
9450
332
228
655
353
208
38
39
9
12
3
20
2
2
16
4
2
0
0
0
0
1
21
0
0
0
11
1
0
2
5397
22647
7116
16394
2756
2778
228
465
1259
818
2243
3411
1201
5551
25478
5433
12018
19308
47369
20921
12821
269
3822
15197
54149
2899
9619
1795
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141898
160878
393299
31801
250653
63043
153765
36732
383823
20978
23800418 3154013 2185991 4606609 2437825 3461479
8811 1159264 485780 41300191
82
-------
Table E.12.8
Phase IV Chesapeake Bay Watershed Model
Forecasted 2005 Land Use
2005 2005 2005 2005 2005 2005 2005 2005 2005 2005
Model FOREST CONV. TILLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
1029203
1873255
818156
572989
753527
2284917
526865
770838
411727
1063095
394843
43737
66551
653888
681890
642836
145136
508624
464480
182681
207113
507617
116177
144318
115093
288651
174387
1459934
1242707
181890
466801
70715
36380
42374
9709
75137
14511
83083
188168
60758
275494
90162
178961
127738
15922
21789
145647
11046
9737
138945
372224
27411
366132
420159
66798
55899
3275
40597
87680
114785
146651
54168
97133
32189
83869
93623
168129
27988
105532
232346
37026
45896
13366
7801
13591
34970
23484
32853
74400
21458
29004
7240
30178
3454
35581
153
3972
13855
12690
26161
7806
2639
3308
8458
70822
13159
98639
111759
36765
111917
84770
68350
19390
1078
1499
40022
770
1245
6599
85628
5445
67251
102479
12765
32450
1069
13847
10168
4094
14138
11929
63558
11203
42001
40868
138253
21251
62127
124598
11303
21317
5774
2701
6851
55485
36812
21215
98910
49302
40070
6303
15942
7814
16903
613
12630
22959
12843
27698
3036
17392
10291
10454
86553
20693
85920
118281
11576
51639
6307
68238
42938
3254
2165
13016
411
1071
12208
63357
3324
60492
34125
5053
9514
56
21009
149
20481 1
460273
164762
71790
36665
108384
64524
118377
47439
101696
98025
12546
18670
98040
191884
84648
76575
261059
211419
41563
118240
251392
16807
11340
40811
65497
34808
242452
334348
51339
142007
9953
11432
7403
4968
16148
2995
11971
12284
3161
11808
5286
55012
32912
2705
2207
24327
761
1182
67683
34702
1020
29316
43359
7029
5513
101
6534
20185
61154
99935
82539
44046
16461
35548
19446
46122
8573
35617
84345
4489
1894
23510
10344
8072
20899
80832
56786
29639
97098
56644
4522
5393
6218
16192
1654
46878
103255
23722
18803
1499
5947
43898
482
6052
3193
10707
18706
14727
13526
9266
33338
28959
30527
39617
75673
10763
53855
102212
34245
2187
31106
134030
41759
20014
8140
6635
3153
232987
504037
208523
65357
50408
134985
85859
165789
68802
156992
132713
17133
20466
53692
47166
41485
60494
100705
92460
67254
59307
128268
11238
6046
24690
42454
8440
81106
162904
30926
71163
3894
7595
4738
2946
4384
661
4450
4133
962
2822
233
48168
17899
1217
1249
10002
387
636
32117
14299
93
11169
16033
4122
721
25
9731
29953
422
565
317
101
69
318
112
724
213
683
645
255
148
114
49
111
203
344
197
214
3
64
0
0
0
0
0
67
2
0
30
3
0
0
0
26
1
36
101
20
59
3
205
14
1
0
4
0
0
15
0
0
1
80
0
18
0
0
47
32299
46932
39264
23996
7435
17471
9833
25114
3284
14096
47276
2582
922
11429
5399
4029
12491
23697
15459
16415
50531
10687
1163
1627
1640
4187
734
19056
37720
10300
7240
705
2205
25220
163
1764
815
3201
6413
6756
3322
2435
15439
15963
23758
29056
20121
5163
35483
37663
11292
303
12952
80124
20105
10408
5009
3012
1887
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1.851
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131939
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
213864
471369
223401
1873394
1932118
329249
764197
101143
85080
137505
37831
265178
57528
301305
463205
136584
477912
205385
474224
290899
78756
99261
333911
30276
103410
400535
625586
41420
588652
854137
158639
141572
18238
103950
155073
83
-------
Table E.12.8
Phase IV Chesapeake Bay Watershed Model
Forecasted 2005 Land Use
2005 2005 2005 2005 2005 2005 2005 2005 2005 2005
Model FOREST CONV. TILLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
710
720
730
740
750-
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
36998
68771
130508
446966
36144
33096
30284
16209
25737
30359
5140
22449
163026
22643
5248
6611
52992
9025
2410
64067
212761
17276
160663
16779
10724
24158
228850
7923
45034
82338
28157
45968
22049
4892
19438
10555
6056
32916
2870
22497
31361
2169
379
722
6584
493
23
8158
33201
6341
34294
2238
4403
103
40230
1728
14755
23749
49451
51736
11829
14795
15188
14306
7235
25321
6874
19187
55984
2613
1144
386
3207
2496
45
3545
29883
3017
22057
363
334
351
24099
759
14851
27159
30341
170061
13765
10345
2970
1268
3419
8642
990
2807
4268
2728
951
714
5723
1813
709
5652
28385
1315
8990
2060
456
1229
22336
789
9734
36289
13606
35277
4840
6537
2127
2115
4230
2233
6233
10650
4858
15388
23717
11043
28109
22566
88525
54426
57644
1469
9844
21965
72703
6685
39593
5418
19755
39222
58079
102396
15128
5974
1084
453
2018
3899
222
592
737
1771
428
364
2714
1161
203
2112
9802
88
3690
431
99
774
9367
316
234
673
377
210
37
29
8
12
1
16
1
0
14
0
1
0
0
0
0
1
20
0
0
0
6
0
0
2
5598
23663
7258
17462
2883
2967
241
495
1328
838
2420
3503
1216
5869
25445
5669
12768
19940
48986
21924
13728
277
4061
15672
56925
3182
10210
1942
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141898
160878
393299
31801
250653
63043
153765
36732
383823
20978
23718194 3138841 2174700 4588888 2532665 3451372
8241 1201511
485780 41300191
84
-------
Table E.12.9
Phase IV Chesapeake Bay Watershed Model
Forecasted 2010 Land Use
2010 2010 2010 2010 2010 2010 2010 2010
Model FOREST CONV. TILLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV.
Segment Acres Acres Acres Acres Acres Acres Acres Acres
2010 2010
WATER Total Area
Acres Acres
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
1028807
1872875
819239
573585
753817
2283915
526600
770164
411568
1062476
393763
43628
66517
653847
681697
642506
144573
507295
462380
181113
203458
505178
115864
144167
114851
287813
174390
1459672
1239771
180682
466480
70640
36181
40429
9702
75041
14450
82964
187666
60220
275121
90191
178206
127396
16162
20819
141997
10778
6813
133468
370677
27354
363956
414354
64429
55349
3062
43647
87704
114741
146621
54239
97234
32202
83833
93576
167982
27977
105470
231710
36935
45873
13365
7799
13584
34835
23423
32705
73761
21079
28865
7220
30146
3447
35478
153
3971
13822
12605
26143
7798
2624
3156
8452
70732
13104
98499
111461
36439
111766
84798
68062
19338
1094
1432
39019
751
871
6339
85272
5434
66851
101063
12312
32130
1000
14887
10171
4093
14135
11945
63625
11207
41983
40848
138132
21243
62091
124257
11275
21307
5774
2700
6847
55269
36716
21119
98061
48432
39878
6286
15925
7797
16854
613
12627
22905
12758
27679
3033
17296
9819
10446
86442
20606
85798
117966
11473
51569
6309
67950
42823
3303
2069
12690
401
750
11727
63094
3317
60132
33653
4874
9421
52
22587
149
204767
460465
165029
71879
36684
108351
64522
118262
47418
101620
97744
12508
18659
98037
191826
84606
76288
260366
210472
41247
116156
250202
16761
11329
40726
65307
34808
242414
333560
50999
141923
9943
11370
7064
4965
16136
2983
11956
12248
3134
11799
5289
54798
32833
2747
2109
23719
743
827
65020
34557
1017
29144
42748
6780
5457
95
7024
20197
61553
100349
81410
43459
16227
36328
19717
46893
8734
36238
86067
4681
1953
23545
10517
8342
21805
82713
59709
32209
102385
60510
4860
5560
6537
17228
1652
47108
106330
25062
19167
1568
6248
45884
502
6303
3367
11018
19569
15415
14019
9217
34546
29375
30322
40360
80285
10982
56366
109631
36028
2255
33348
139359
44052
20688
8322
1896
3127
232898
503935
208799
65425
50427
134925
85816
165644
68776
156901
132350
17091
20455
53689
47153
41464
60259
100442
92042
66676
58260
127651
11207
6040
24639
42331
8440
81092
162520
30721
71114
3890
7553
4521
2944
4379
658
4444
4122
953
2818
233
47965
17851
1235
1193
9751
378
445
30851
14239
93
11103
15812
3975
714
24
10462
29961
387
280
268
87
64
303
80
735
216
700
656
261
149
110
52
110
191
354
187
171
0
45
0
0
0
0
0
61
0
0
17
3
0
0
0
18
0
34
104
19
51
2
185
5
0
0
2
0
0
10
0
0
0
91
0
20
0
0
40
32510
47126
38727
23676
7330
17855
9970
25534
3346
14342
48241
2693
950
11446
5489
4164
13033
24249
16255
17838
53282
11417
1249
1677
1724
4455
733
19149
38843
10882
7381
737
2316
26361
170
1837
859
3294
6709
7071
3443
2422
15998
16193
23599
29600
21348
5268
37138
40397
11879
313
13886
83309
21209
10758
5122
861
1872
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131938
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
21 3864
471369
223401
1873394
1932118
329249
764197
101143
85080
137505
37831
265178
57528
301304
463205
136584
477912
205385
474223
290899
78756
99261
333911
30276
103410
400535
625586
41420
588652
854137
158639
141572
18238
103950
155073
85
-------
Table E.12.9
Phase IV Chesapeake Bay Watershed Model
Forecasted 2010 Land Use
2010 2010 2010 2010 2010 2010 2010 2010 2010 2010
Model FOREST CONV. TILLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
36843
68040
130328
445265
36018
36345
30236
16160
25587
30336
4974
22299
162964
22202
5380
6356
51706
7684
0
61182
209307
17244
160089
15905
6493
23361
226816
7499
44846
81462
28118
45793
21973
5372
19407
10523
6020
32891
2777
22346
31349
2127
389
695
6425
420
0
7790
32662
6329
34171
2122
2666
100
39872
1636
14694
23496
49383
51539
11788
16247
15164
14262
7193
25302
6652
19058
55962
2562
1173
371
3129
2126
0
3386
29398
3011
21978
344
202
340
23885
719
14782
26846
30274
169411
13719
11374
2966
1264
3399
8639
959
2788
4268
2675
976
687
5584
1544
0
5398
27925
1313
8958
1952
279
1189
22137
747
10082
37847
13872
37358
5055
1868
2225
2221
4428
2289
6607
10992
4936
15837
23618
11268
29297
23748
90707
57107
61761
1513
10425
22631
76248
7279
41888
5872
19673
38805
57999
102006
15076
6561
1082
452
2006
3896
215
588
737
1737
439
349
2648
989
0
2017
9643
88
3676
408
60
749
9283
299
240
690
401
211
36
19
7
13
0
11
0
0
12
0
0
0
0
0
0
0
19
0
0
0
1
0
0
2
5799
24679
7400
18492
3011
848
252
519
1390
859
2566
3615
1236
6041
25338
5784
13308
20985
50194
23004
14709
285
4301
16147
59700
3465
10802
2104
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141898
160878
393299
31801
250653
63043
153765
36732
383823
20978
23648084 3125928 2167494 4573688 2611886 3443232
7732 1236366 485780 41300191
86
-------
Table E.12.10
phase IV Chesapeake Bay Watershed Model
Forecasted 2015 Land Use
2015 2015 2015 2015 2015 2015 2015 2015 2015 2015
Model FOREST CONV. TILLCONS. TILU PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
1028579
1872528
820083
574243
753891
2283157
526385
769819
411411
1061951
393196
43549
66491
653798
681509
642203
144143
505929
460336
180093
200481
502740
115551
144017
114610
286975
174390
1459103
1236835
179467
466158
70566
35969
37468
9696
74944
14389
82868
187236
59726
274853
90182
177496
126968
16043
19427
137636
10484
4070
127991
369130
27297
361783
407922
62022
54784
2824
40024
87724
114716
146594
54295
97345
32205
83805
93537
167907
27966
105418
231376
36868
45855
13364
7797
13578
34731
23360
32560
73346
20771
28725
7201
30115
3439
35375
153
3969
13789
12521
26125
7790
2609
2925
8447
70641
13049
98385
111205
36140
111657
84789
67791
19273
1086
1336
37821
731
520
6079
84916
5423
66452
99494
11852
31802
922
13652
10174
4092
14133
11957
63698
11208
41969
40831
138071
21235
62061
124078
11255
21299
5773
2699
6844
55105
36617
21026
97509
47724
39686
6269
15909
7781
16805
613
12623
22851
12672
27660
3029
17195
9100
10439
86331
20519
85698
117695
11379
51518
6308
67679
42679
3278
1930
12300
391
448
11246
62831
3310
59773
33131
4692
9325
48
20713
149
204757
460660
165248
71976
36692
108329
64527
118198
47398
101552
97591
12478
18651
98033
191770
84567
76072
259654
209550
41056
114456
249012
16716
11317
40640
65117
34808
242325
332770
50656
141838
9933
11303
6546
4962
16124
2971
11944
12216
3109
11795
5289
54599
32728
2727
1968
22992
722
494
62358
34413
1015
28969
42071
6527
5400
87
6441
20209
61782
100726
80532
42812
16167
36919
19937
47288
8894
36766
86973
4821
1998
23586
10686
8590
22496
84648
62555
33879
106691
64374
5198
5727
6855
18264
1652
47607
109404
26412
19532
1636
6569
48907
519
6554
3542
11271
20309
16046
14374
9233
35680
29895
30424
41425
85797
11223
58721
117050
37810
2323
35587
145262
46381
21381
8526
7526
3106
232846
503842
209014
65500
50432
134881
85781
165570
68749
156823
132159
17060
20447
53685
47140
41444
60080
100171
91635
66301
57408
127035
11177
6033
24587
42208
8440
81060
162135
30514
71065
3885
7509
4190
2942
4373
655
4439
4112
945
2815
233
47774
17791
1226
1114
9452
368
266
29585
14180
93
11037
15566
3827
707
22
9594
29968
352
0
219
72
59
289
49
746
218
717
668
267
150
107
56
108
180
364
178
128
0
27
0
0
0
0
0
55
0
0
4
2
0
0
0
9
0
32
107
17
44
2
166
0
0
0
1
0
0
4
0
0
0
102
0
21
0
0
34
32632
47304
38309
23323
7303
18145
10081
25749
3407
14551
48749
2773
972
11467
5577
4288
13445
24816
17030
18763
55522
12146
1336
1727
1807
4723
733
19352
39966
11468
7521
769
2435
28098
176
1910
904
3370
6963
7361
3530
2426
16524
16479
23678
30381
22813
5383
38689
43131
12467
322
14818
86839
22330
11118
5247
3416
1859
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131938
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
213864
471369
223401
1873394
1932119
329249
764197
101143
85080
137505
37831
265178
57528
301304
463205
136584
477912
205385
474224
290899
78756
99261
33391 1
30276
103410
400535
625586
41420
588652
854137
158639
141572
18238
103950
155073
87
-------
Table E.12.10
Phase IV Chesapeake Bay Watershed Model
Forecasted 2015 Land Use
2015 2015 2015 2015 2015 2015 2015 2015 2015 2015
Model FOREST CONV. TILLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
3S
36737
67505
130239
443656
35926
32485
30196
16117
25461
30314
4802
22189
162927
21705
5223
6075
50064
6523
0
57950
206028
17212
159515
15030
2112
22565
224783
7086
44716
80822
28099
45628
21916
4802
19382
10496
5991
32868
2681
22236
31342
2079
377
664
6221
357
0
7379
32150
6317
34049
2005
867
97
39515
1546
14651
23312
49349
51353
11758
14522
15144
14225
7158
25284
6421
18964
55950
2505
1139
355
3029
1804
0
3207
28937
3005
21899
325
66
328
23671
679
14732
26612
30229
168796
13684
10174
2964
1260
3383
8637
926
2774
4269
2615
947
656
5407
1310
0
5113
27488
1310
8926
1845
91
1148
21939
706
10324
38984
14005
39326
5214
7415
2306
231 r
4594
2340
6996
11240
4983
16345
23735
11515
30814
24773
90707
60111
65671
1557
11006
23296
79920
7874
44182
6314
19616
38500
57959
101637
15037
5864
1081
451
1997
3893
208
585
737
1698
426
334
2564
839
0
1910
9492
88
3663
386
19
723
9200
283
246
707
425
213
35
9
6
13
0
7
0
0
11
0
0
0
0
0
0
0
19
0
0
0
0
0
0
2
5937
25421
7471
19466
3105
3366
261
540
1442
878
2717
3697
1247
6234
25464
5911
13997
21890
50194
24214
15640
293
4541
16622
62575
3748
11394
2263
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141898
160878
393299
31801
250653
63043
153765
36732
383823
20978
23565565 3110363 2154224 4556268 2708708 3433083
7249 1278951
485780 41300191
88
-------
Table E.12.11
Phase IV Chesapeake Bay Watershed Model
Forecasted 2020 Land Use
2020 2020 2020 2020 2020 2020 2020 2020
Model FOREST CONV. T1LLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV.
Segment Acres Acres Acres Acres Acres Acres Acres Acres
2020 2020
WATER Total Area
Acres Acres
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
1028352
1872181
820927
574901
753965
2282399
526170
769474
411254
1061425
392629
43470
66467
653772
681355
641940
143750
504562
458346
179082
197507
500302
115237
143866
114368
286137
174390
1458533
1233899
178252
465836
70492
35757
34555
9690
74864
14334
82785
186858
59288
274660
90172
176831
126519
15905
18135
133489
10245
1434
122514
367583
27239
359608
401490
59615
54218
2585
39753
87745
114690
146567
54351
97457
32208
83777
93499
167832
27956
105366
231043
36801
45838
13364
7795
13572
34636
23297
32419
72934
20463
28586
7181
30083
3432
35271
153
3968
13756
12436
26107
7781
2593
2698
8441
70565
12999
98286
110980
35875
111579
84780
67537
19205
1077
1247
36681
714
183
5818
84560
5411
66053
97926
11392
31474
844
13559
10176
4091
14130
11970
63771
11209
41955
40814
138009
21227
62030
123899
11234
21291
5773
2699
6841
54955
36518
20935
96961
47016
39493
6252
15892
7764
16756
613
12618
22796
12587
27640
3026
17094
8392
10433
86238
20440
85612
117457
11296
51482
6307
67426
42528
3250
1802
11930
382
158
10765
62567
3303
59414
32608
4510
9228
44
20572
149
204746
460575
165467
72073
36701
108308
64532
118134
47377
101484
97438
12449
18643
98033
191723
84534
75875
258942
208653
40867
112758
247823
16671
11305
40554
64927
34808
242236
331980
50312
141744
9923
11236
6037
4959
16115
2959
11935
12188
3088
11793
5288
54413
32612
2704
1837
22300
706
174
59693
34269
1013
28795
41395
6273
5343
80
6398
20220
62011
101104
79652
42165
16107
37509
20157
47683
9053
37294
87877
4961
2041
23608
10823
8806
23128
86582
65325
35536
110992
68239
5536
5894
7174
19300
1652
48107
112479
27762
19898
1704
6889
51881
536
6764
3699
11491
20961
16606
14628
9249
36745
30441
30541
42414
91038
11418
60985
124470
39592
2392
37828
151167
48710
22074
8730
7947
3084
232795
503749
209229
65575
50437
134836
85746
165496
68723
156745
131969
17029
20440
53683
47130
41427
59916
99901
91239
65928
56556
126419
11147
6027
24535
42085
8440
81029
161750
30307
71016
3881
7465
3864
2941
4368
653
4434
4104
939
2813
233
47595
17728
1216
1039
9167
359
94
28319
14121
93
10970
15321
3678
700
20
9529
29975
317
0
171
58
55
274
18
756
221
734
679
274
151
103
60
107
168
373
168
86
0
9
0
0
0
0
0
50
0
0
0
1
0
0
0
0
0
29
110
16
37
1
147
0
0
0
0
0
0
0
0
0
0
114
0
22
0
0
27
32752.49
47481 .05
37890.3
22970.75
7275.65
18435.22
10192.42
25963.61
3468.05
14759.74
49256.13
2853.62
993.22
11476.98
5648.99
4395.72
13823.38
25382.86
17783.65
19680.62
57760.71
12875.12
1423.37
1777.81
1891.51
4990.64
733.34
19555.24
41089.74
12053.69
7662.23
801.47
2554.16
29806.33
181.17
1971.58
943.86
3435.48
7186.04
7617.38
3592.52
2430.45
17016.64
16780.42
23769.55
31106.72
24207.05
5477.2
40180.7
45865.1
13054.64
331.49
15751.34
90367.99
23451 .61
11478.74
5372.83
3607.36
1846.12
11288
30628
20687
12267
6471
17915
8174
26617
10812
7391
17672
2867
10033
4795
2965
4164
3094
4772
5899
1952
7525
3124
976
1033
14144
1903
2612
7300
14368
5540
4294
3532
1491
271
651
4292
1500
3298
3361
1860
7326
6924
6513
5086
293
1679
5099
975
201
3091
9840
1637
10233
23749
1008
7034
562
2585
1851
1691043
3176414
1400343
951237
914429
2725407
849303
1459963
600090
1547230
1132463
131939
185897
864608
950198
805788
409346
1040330
900768
513026
610577
1026871
164424
215877
213864
471369
223401
1873394
1932118
329249
764197
101143
85080
137505
37831
265178
57528
301304
463205
136584
477912
205385
474224
290899
78756
99261
333911
30276
103410
400535
625586
41420
588652
854137
158639
141572
18238
103950
155073
89
-------
Table E.12.11
Phase IV Chesapeake Bay Watershed Model
Forecasted 2020 Land Use
2020 2020 2020 2020 2020 2020 2020 2020 2020 2020
Model FOREST CONV. TILLCONS. TILL PASTURE PERVIOUS HAYLAND MANURE IMPERV. WATER Total Area
Segment Acres Acres Acres Acres Acres Acres Acres Acres Acres Acres
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
36630
66971
130149
442168
35834
32196
30161
16080
25344
30299
4648
22079
162902
21246
5045
5847,
48561
5392
0
54845
202837
17180
158941
14155
0
21768
222750
6696
44586
80182
28080
45475
21860
4759
19360
10471
5963
32851
2595
22126
31337
2035
365
639
6034
295
0
6983
31652
6305
33926
1888
0
93
39157
1461
14608
23127
49315
51180
11728
14392
15127
14192
7125
25271
6215
18870
55941
2452
1100
342
2938
1492
0
3035
28489
3000
21820
306
0
317
23457
642
14683
26379
30184
168228
13650
10093
2961
1256
3367
8637
896
2761
4270
2560
915
632
5244
1083
0
4839
27063
1308
8894
1737
0
1108
21741
667
10565
40122
14138
41147
5372
7830
2377
2390
4747
2377
7343
11489
5014
16813
23869
11715
32203
25769
90707
62997
69474
1601
11587
23962
81690
8469
46477
6731
19559
38195
57919
101296
14999
5812
1080
450
1987
3892
201
583
737
1662
411
321
2487
694
0
1808
9345
88
3650
363
0
698
9117
267
252
725
449
215
34
0
5
14
0
3
0
0
9
0
0
0
0
0
0
0
18
0
0
0
0
0
0
2
6076.13
26162.44
7541 .97
20367.13
3199.43
3554.31
268.8
558.94
1489.97
891.95
2851 .68
3778.55
1255.2
6412.96
25607.84
6013.9
14627.76
22770.57
50194.1
25376.05
16545.58
301.73
4780.56
17096.39
63960.69
4031 .62
11985.46
2412.04
8062
1907
1079
5469
632
386
56
0
977
3787
2113
5366
15407
1752
1741
1748
3355
648
997
995
7875
2018
7054
3535
8114
249
9139
2100
155020
303770
318855
875545
107307
79021
71396
45414
51001
108009
26864
87052
276872
54933
59053
27257
115451
58144
141898
160878
393299
31801
250653
63043
153765
36732
383823
20978
——•-——= ===
23493833 3097751 2144635 4540571 2791418 3424541
7064 1314598
485780 41300191
90
-------
Section E.13
Comparison of 1985 Phase II and 1985 Phase IV Watershed Model Land Use Data
Table E.I3.1 is a comparison between the two different land use data sets used in
Phase II (Section 4, Table E.4.1) and Phase IV (Section 12, Table E.12.1) of the
Chesapeake Bay Watershed Model. Because some Phase II Watershed Model segments
were subdivided for greater modeling accuracy into more segments in Phase IV, it was
necessary to sum the land use of the subdivided Phase IV segments for comparison with
the Phase II Watershed Model land use. Land use data for Phase IV was developed by
"Hindcast" using methods previously described in section 12 from EMAP and the
CBPLU database. The Equation used to calculate the difference in Phase IV and Phase II
landuse was: Phase II subtracted from Phase IV divided by Phase IV. Because different
databases were used in the development of the land use data we see that there are
differences in the Phase II and Phase IV landuse, especially in urban vs. agriculture total
acreages.
Table E.13.1
Percent Change Between Phase IV and Phase II Watershed Model Land Use with Respect to Phase IV Land Use Values
Total Total
Model Conven. Conserv. Hayland Pasture Forest Urban Water Total Agriculture Urban
Segment Till Till % %
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
-10.06
6.1
-20.38
-44.39
-25.31
4.04
14.95
10.99
8.79
1.13
7.97
37.53
7.49
-11.04
5.44
22.48
38.92
-98.73
13.09
58.17
76.99
-20.76
25.52
-20.51
22.06
-16.73
4.48
18.82
11.9
18.86
0.4
-45.24
3.25
-29.17
-89.07
-10.23
-46.72
-7.7
-47.72
-15.41
-4.16
17.05
-43.26
-54.77
16.06
-5.6
5.69
21.63
-2.81
8.9
-10.36
1.85
26.91
9.35
-8.18
4.75
-13.21
12.05
1.87
-13.6
9.67
-14.49
6.43
-10.74
5.03
-4.97
-22.16
3.43
11.15
19.13
29.61
22.08
64.15
-86.2
-22.29
54.84
41.85
5.2
22.67
-11.22
3.11
-8.09
-12.2
24.96
-22.81
19.52
19.28
2.05
0.37
14.94
15.4
58.14
4.43
1.62
3.2
0.2
9.78
1.47
-15.57
-3.73
4.23
-1.06
-4.35
47.23
21.87
6.13
-6.45
9.27
1.16
-15.82
-6.74
15.53
4.84
-11.88
-5.47
-118.32
-190.55
18.93
-38.43
-133.97
-60.26
-18.1
-102.44
-44.7
-59.75
-20.88
-3.49
-1009
-42.53
-53.66
-337.44
-121.24
57.55
16.65
-113.34
-21.96
24.56
-173.98
-8.74
-77.01
-351.17
-9.23
55.38
43.4
19.88
94.36
-25.94
30.15
35.34
90.29
97.18
-4.36
21.22
42.41
7.18
26.24
64.18
-100.39
88.41
28.3
-23.18
0
-0.01
0
0
0
0
0
0.01
0
0
-0.09
0.2
-0.02
0
0
0
0
0
0
0
0
0
0
10.72
22.31
3.89
7.81
-33.98
-3.83
29.19
15
-5.67
8.53
-10.27
9.61
-2.57
-14.05
21.44
-16.8
12.79
6.29
5.2
3.06
3.13
10.53
32.25
-118.32
-190.55
18.93
-38.43
-133.97
-60.26
-18.1
-102.44
-44.7
-59.75
-20.88
-3.49
-1009
-42.53
-53.66
-337.44
-121.24
57.55
16.65
-113.34
-21 .96
24.56
-173.98
91
-------
240
250
260
265
270
280
290
300
310
330
340
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
550
560
570
580
590
600
610
620
630
640
87.04
-74.56
27.31
-1.53
-95.58
15.78
32.96
-52.99
-248.39
24.27
-14.19
41.84
72.35
65.31
14.9
36.14
50.57
39.42
68.58
48.3
39.65
-115.03
40.92
-21.25
16.82
34,86
50.63
29.39
6.06
-159.13
61.03
5.88
-16.93
-3.43
34.11
34.61
51.39
39.19
-2.59
29.55
-67.58
37.08
9.26
-78.58
-171.63
-14.78
-60.75
17.3
71.74
33.98
13.19
-45.68
10.2
-81 .76
-8.42
-34.2
-53.82
-49.92
-272.32
-38.16
-9.92
-70.92
23.09
-73.69
-51.22
-16.49
-73.46
^9.99
-34.37
-245.64
-62.27
17.01
64.02
-2823.2
17.48
31.29
-78.41
-37.09
-1137.7
-1447.6
49.45
33.46
28.83
-35.4
-109.96
-0.32
25.1
18.81
93.15
31.55
5.96
13.89
44.4
2.1
8.57
16.17
-22.29
31.26
24.41
35.87
20.84
-73.26
32.11
-43.86
4.98
25.86
-33.32
-7.07
-11.81
-239.55
-12.31
39.06
54.37
-7.76
33.54
59.01
-6.91
57.33
90.76
-171.86
84.86
45.08
64.17
45.52
4.7
19.41
41.41
40.46
58.47
41.2
12.27
77.18
70.88
82.53
82.34
81.19
84.25
81.77
76.68
74.97
23.37
-36.55
38.33
-38.31
-6.23
80.02
31.44
57.02
49.99
-38.82
30.65
62.55
61.8
19.74
65.5
67.68
56.52
62.32
64.46
30.7
-22.07
-26.69
-15.14
-8.67
6.56
-8.34
-19.69
-12.36
-0.35
31.23
14.41
-0.34
-37.11
-2.25
-2.61
-18.57
-15.98
-30.79
-17.73
-37.2
10.3
1.3
31.96
0.55
14.76
2.06
5.49
-4.68
-7.19
-99.06
5.08
-11.71
1.54
13.54
-7.63
-19.86
-29.99
-27.04
-48.06
-131.8
-53.64
-73.16
-130.42
8.98
10.09
41.81
24.08
-36.61
-545.18
-380.4
-3.06
-56.07
-1991.8
-364.72
-163.58
-181.36
-113.78
-2.2
-68.49
47.35
-176.95
64.82
-208.55
53.6
-6.71
-58.83
-5.21
-80.35
8.38
33.93
46.04
12
61.85
9.45
-76.27
43.44
35.69
37.53
70.97
45.56
-74.08
72.54
63.16
100
74.78
31.9
21.19
72.52
8.41
-113.35
-3299.8
-61.85
-60.49
-48.51
-48.08
35.81
100
100
80.58
-109.16
97.1
71.81
92.31
8.41
73.44
-14.72
-26.3
-91.63
-20.98
-208.47
28.51
-56.32
15.59
-61.74
-66.16
-4.29
57.56
54.91
100
27.91
0
0
0
0
0
0.01
0.01
0
0
0
0
-0.01
-0.01
-0.01
-0.01
0
-0.01
-0.01
-0.01
-0.01
0.01
0.33
0
0.34
0.02
0
0
-0.24
0.01
-0.01
0.18
0
0.18
0
0
0.1
0.01
0.07
0.32
0.03
56.14
32.79
39.49
29.26
-29.73
12.18
27.69
23.76
39.22
35.45
7.88
13.73
53.29
13.58
15.27
18.98
18.76
31.4
28.01
35.69
18.76
-64.34
33.36
-44.65
-9.17
44.54
5.8
20.25
11.06
-149.26
11.63
23.46
32.87
-31.31
35.53
44.36
15.09
22.64
-68.78
-139.9
-53.64
-73.16
-130.42
8.98
10.09
41.81
24.08
-36.61
-545.18
-380.4
-3.06
-56.07
-1991.83
-364.72
-163.58
-181.36
-113.78
-2.2
-68.49
47.35
-176.95
64.82
-208.55
53.6
-6.71
-58.83
-5.21
-80.35
8.38
33.93
46.04
12
61.85
9.45
-76.27
43.44
35.69
37.53
70.97
45.56
Note: Positive values indicate a larger acreage of a particular land use in the Phase II data base
Negative values indicate a larger acreage of a particular land use in the Phase IV data base
92
-------
Section E.14
Manure Acres by Phase IV Chesapeake Bay Watershed Model Segment
The influence that agricultural livestock and farm animals have on the Chesapeake
Bay watershed was determined by a mass balance of manure for each segment of the
Phase IV Watershed Model. This is done by estimating populations of animal types in
each segment and assuming average nutrient levels in average amounts of manure voided
for each animal type (Table E.I4.1)17. Six animal types are used in the calculations of
this mass balance. These animal types are beef, dairy, swine, poultry (layers), poultry
(broilers), and turkeys. Horse and sheep populations were not included in the manure
mass balance. To estimate manure voided by each animal type within a segment animal
units (AU) are used. An animal unit is defined as 1000 pounds of animal weight. One
animal unit corresponds to 0.71 dairy cows, one beef cow, five swine, 250 poultry layers,
500 poultry broilers, or 100 turkeys (Table E.I4.1). Animal population numbers were
derived for each Phase II Watershed Model segment and for each year between 1984 and
2000 with an interpolation of the 1982 and the 1992 Agricultural Census published by the
U.S. Department of Commerce, Bureau of the Census for the six states within the
Chesapeake Bay Watershed. The percentage of area in a segment for each county is used
to associate the proportion of animal units from counties found in each segment.
Table E.14.1
Estimated Quantities of Voided Manure from Livestock and Poultry. Normalized to
1 ,000 pounds body weight.
Animal
Type
Dairy
Beef
Swine
Poultry, layers
Poultry, broilers
Turkeys
Source: (U.S. EPS,
Animals/
Animal
Units
0.71
1
5
250
500
100
1979) Animal Waste
Wet Manure
Voided
(tons/yr)
14.9
6.7
11.7
9.7
13.1
10.2
Utilization on
P
(Ib/yr)
21
18
37
100
110
84
Cropland and
N COD
(Ib/yr) (Ib/yr)
123 3340
61 1510
160 2080
235 4353
390 5915
304 4599
Pasture land.
17 1982 Census of Agriculture, Volume 1, Geographic Area Series, published by the U.S. Department of
Commerce, Washington D.C.
93
-------
This mass balance distributes the manure nutrients voided into the following four groups:
confined/never susceptible to runoff; confined/susceptible to run off; confined/susceptible
to run off with BMPs able to be implemented; and pasture (Table E.I4.2). Manure acres
have previously been used in the model to simulate stream runoff of manure nutrients from
an impervious surface. This mass balance uses the same terminology as used in the Phase
II Watershed Model to describe nutrients that go to the land use category of Manure Acres.
Best Management Practices are incorporated into the model by adjusting the percentage of
manure voided between two of the confined groups (confined/susceptible to run off and
confined/susceptible to run off with BMPs able to be implemented). Because some confined
manure is always susceptible to runoff, BMPs will never be 100% efficient.
Table E.14.2
Distribution of TN from Manure for
Balance of Manure for
Animal
Type
Dairy
Each Segment in the Calculation of the Mass
the Watershed Model.
Confined/
Susceptible
0.2
Beef (Segment w/out snow) 0
Beef (Segment w/ snow)
Swine
Poultry, layers
Poultry, broilers
Turkeys
0.04
0.2
0.01
0.01
0.01
Confined/ Confined/
Susceptible Never
(BMP's can
be Implemented)
0.8
0
0.16
0.8
0.14
0.14
0.14
Susceptible
0
0
0
0
0.85
0.85
0.85
Pasture
0
1.0
0.80
0
0
0
0
To determine Manure Acres, the number of animal units in the susceptible to runoff mass
balance groups are added for a segment and then divided by 145. This indicates the density
of animals units that are indicative of a concentrated animal feedlot.
The breakdown of each animal types into the four groups used in this mass balance
follow. Dairy are in confined areas 100% of the time. Dairy are further divided into the
94
-------
three confined groups as follows: 20% in confined/susceptible to runoff, 80% confined
susceptible to runoff (BMPs able to be implemented), and 0% confined/never susceptible to
runoff.
Beef are found 100% of the time in the pasture, except for segments that have snow on
the ground a portion of the year. Beef in these segments are in confined areas 20% of the
year (4% of the total time in confined/susceptible to runoff, and 16% in confined susceptible
to runoff [BMPs able to be implemented]).
Swine are in confined areas 100% of the time. Swine are further divided into the three
confined groups as follows: 1% in confined/susceptible to runoff, 16% confined susceptible
to runoff (BMPs able to be implemented), and 85% confined/never susceptible to runoff.
All poultry (including poultry [layers], poultry [boilers] and turkeys) are found in
confined areas 100% of the time. Poultry are further divided into the three confined groups
as follows: 1% in confined/susceptible to runoff, 16% confined susceptible to runoff (BMPs
able to be implemented), and 85% confined/never susceptible to runoff.
For an overview of manure mass balance for the Chesapeake Bay basin see Appendix B:
Development of An Animal Waste Nutrient Mass Balance To Determine Pasture Loading
and Compare Cropland Inputs in this volume. This appendix explains in greater detail the
aggregation of agricultural census data to animal units per segment. It also explains how
mass balance of animal nutrient waste is used to determine a nutrient load to pasture, and to
revise a previously calculated manure application rates to cropland.
95
-------
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Section E.15
Phase IV Chesapeake Bay Watershed Model Below Fall Line Subsegments and
Chesapeake Bay Water Quality Model Cell Linkage
In an effort to refine linkage between the Phase IV Watershed Model and the Chesapeake
Bay Water Quality/Ecosystem Models, a new and more extensive segmentation was
developed for the below fall line segments. Using GIS methodologies, subsegments were
created based on hydrologic boundaries and the relative position of adjoining Chesapeake
Bay Water Quality Model cells. The resulting final cover of subsegments contains 255
segments as compared to the Phase IV Watershed Model below fall line segment count of
43 segments (Figure E.I5.1). Note that the Phase IV Watershed Below Fall-line Segments
were renumbered in the subsegmentation GIS coverage. Thus^ the Phase IV Watershed
Model segment numbers do not correspond directly with the Phase IV Watershed Model
subsegment numbers.
The final subsegmentation coverage was overlaid on the Chesapeake Bay Program Land
Use (CBPLU) database to determine land use distribution within each subsegment. Acreage
for forest, pervious urban, and impervious urban land use categories were obtained from the
subsequent GIS overlay. Agricultural land use acres were determined by applying a
proportional split based on the CBPLU Herbaceous cover within the subsegment and the
distribution of Agricultural land uses in the parent Phase IV Watershed Model segment as
provided in section E.8.
As part of the effort to support a more comprehensive multimedia loading simulation of
the Chesapeake Bay, more refined linkages among the models have been forged. In this
case, the Phase IV Watershed Model results are supplied as input information for the
Chesapeake Bay Water Quality Model (Figure E.I5.2). To achieve this linkage, a spatial
relationship between the two model segmentation schemes was developed based on
geographical information. An overlay of the Phase IV Watershed Model subsegment GIS
coverage and the Chesapeake Bay Water Quality Model cell GIS coverage was performed
(Figure E.I5.3). The overlay helped to determine which Chesapeake Bay Water Quality
Model cells would be loaded by which Phase IV Watershed Model Subsegment.
There are some cases where one subsegment discharges loads to the Chesapeake Bay
Water Quality Model into more than one Tributary cell. In this case, the loading is
proportionally divided by the number of cells to be loaded, as in subsegment 461 which
discharges into tributary cells 163 and 164 (Table E.I5.1). The following table shows each
segment, and its respective subsegment where applicable, that discharges loads into
multiple cells. The maximum count is the number of cells that the individual segment feeds.
98
-------
The fifth column in Table E.I5.1 shows the loading factor which is applied to the Phase IV
Watershed Model loads in order to calculate the segment's input into the specific cell.
99
-------
Figure E. 15.1
Phase IV Chesapeake Bay Watershed Model
Below Fall Line Model Subsegments
PHASE IV BELOW FALL LINE SUBSEGMENTS
IN THE
CHESAPEAKE SAY WATERSHED
KJti Msf> Dote: July. 1997
Source: U.S. E.P.A. Chesapeake Bay Program Modeling Team
100
-------
Figure E. 15.2
I—
Chesapeake Bay Water Quality Model
PHASE IV BELOW FALL LINE SUBSEGMEiNTS
AND THE CHESAPEAKE BAY
WATER QUALITY MODEL TRIBUTARY CELLS
Source: Chesapeake Bay Program Modeling Team
101
-------
Figure E. 15.3
Phase IV Chesapeake Bay Watershed Model
Below Fall Line Model Subsegments
Chesapeake Bay Water Quality Model Cells
/V Phase IV WSM Segments
,A/ Water Quality Model Cells
KJH My Dale: July. 1997 /modgis/khofkins/map^appcnjixc
Source: U.S. ERA. Chesapeake Bay Program Modeling Team
102
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
370
370
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
380
390
400
400
400
400
400
400
410
410
410
410
410
420
420
420
420
430
430
430
430
430
430
430
430
430
440
Sub-
Segment
300
309
350
350
350
350
350
329
335
335
346
352
352
352
367
370
370
370
372
395
407
409
400
389
361
535
539
539
461
461
478
466
478
478
476
476
493
493
493
499
499
476
493
239
Cell
685
684
507
506
434
368
305
236
235
234
233
177
176
175
174
173
172
171
300
298
297
227
168
146
132
167
166
165
164
163
225
162
161
145
224
223
220
219
218
217
216
160
159
183
Max.
Count
2
2
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
1
6
6
6
6
6
6
5
5
5
5
5
4
4
4
4
20
20
20
20
20
20
20
20
20
41
Factor
0.5
0.5
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
1
0.16667
0.16667
0.16667
0.16667
0.16667
0.16667
0.2
0.2
0.2
0.2
0.2
0.25
0.25
0.25
0.25
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.02439
Segment
430
430
430
430
430
430
430
430
430
430
430
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
440
500
Sub-
Segment
493
493
499
476
493
493
499
499
499
496
420
239
239
239
155
155
170
175
175
175
175
175
175
175
175
175
175
175
199
199
199
199
218
218
218
218
218
218
239
239
239
239
239
564
Cell
158
157
156
144
143
142
141
131
122
121
113
247
246
245
212
211
210
209
208
207
206
205
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188
187
186
185
184
1628
Max.
Count
20
20
20
20
20
20
20
20
20
20
20
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
41
34
Factor
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02941
103
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
440
440
440
440
440
440
440
440
450
450
450
450
450
450
450
450
470
470
470
480
480
480
480
490
490
490
490
490
490
490
490
500
500
500
500
500
500
500
500
500
500
500
500
560
Sub-
Segment
155
155
504
504
504
504
504
504
288
284
289
288
289
287
289
287
317
317
286
311
311
307
307
540
345
351
351
355
355
359
359
553
552
554
556
559
562
559
562
559
562
560
560
449
Cell
153
152
138
128
121
120
119
112
1204
1203
1202
1148
1145
1075
1073
980
1201
1145
1062
1416
1415
1414
1376
1413
1374
1335
1292
1248
1194
1137
1054
1728
1727
1726
1708
1706
1688
1686
1668
1666
1648
1646
1645
1905
Max.
Count
41
41
41
41
41
41
41
41
8
8
8
8
8
8
8
8
3
3
3
4
4
4
4
8
8
8
8
8
8
8
8
34
34
34
34
34
34
34
34
34
34
34
34
89
Factor
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.02439
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.33333
0.33333
0.33333
0.25
0.25
0.25
0.25
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.01124
Segment
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
510
540
550
550
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
Sub-
Segment
563
564
567
566
570
566
573
566
573
566
573
573
573
576
577
576
577
576
580
576
580
543
542
530
531
449
449
449
449
449
449
449
449
449
449
449
449
449
449
449
449
449
449
116
Cell
1626
1606
1603
1584
1581
1561
1558
1535
1532
1508
1505
1476
1446
1412
1408
1373
1370
1334
1330
1291
1287
1192
1829
1760
1759
1995
1994
1993
1985
1975
1973
1965
1963
1955
1953
1945
1943
1935
1933
1925
1923
1915
1913
1521
Max.
Count
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
1
1
2
2
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
Factor
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
0.02941
1
1
0.5
0.5
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124-
0.01124
0.01124
104
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
590
Sub-
Segment
449
449
449
449
449
449
449
449
449
449
449
449
449
449
72
449
72
73
72
73
72
73
72
73
72
73
72
73
72
73
72
73
72
73
484
498
484
498
484
498
95
116
95
167
Cell
1903
1894
1892
1883
1880
1878
1868
1866
1856
1854
1844
1839
1826
1823
1809
1807
1792
1790
1776
1774
1758
1756
1741
1739
1721
1719
1701
1699
1681
1679
1661
1659
1641
1639
1621
1617
1598
1595
1576
1573
1551
1547
1525
2057
Max.
Count
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
137
Factor
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.0072993
Segment
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
560
580
580
580
580
580
580
590
590
590
590
590
590
590
590
590
590
590
590
Sub-
Segment
112
514
112
514
112
514
112
514
112
514
130
514
130
130
130
516
130
516
130
516
189
516
189
516
189
189
110
110
110
110
110
110
513
513
513
513
513
513
513
513
513
513
167
167
Cell
1498
1494
1468
1464
1439
1435
1401
1397
1363
1359
1323
1319
1280
1279
1278
1273
1234
1229
1180
1175
1174
1096
1095
1010
1009
1008
1235
1181
1106
1020
925
924
2085
2084
2080
2079
2075
2074
2068
2067
2063
2062
2058
1969
Max.
Count
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
89
6
6
6
6
6
6
137
137
137
137
137
137
137
137
137
137
137
137
Factor
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.01124
0.16667
0.16667
0.16667
0.16667
0.16667
0.16667
0.0073
0.0073
0.0073
0.0073
0.0073
0.0073
0.0073
0.0073
0.0073
0.0072993
0.0072993
0.0072993
105
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
Sub-
Segment
502
502
167
167
502
502
167
167
156
162
167
167
156
162
167
167
156
162
167
167
156
162
167
167
156
162
167
167
156
162
167
167
156
162
167
167
156
162
167
167
173
162
167
192
Cell
2053
2052
2051
2050
2046
2045
2044
2043
2037
2036
2035
2034
2030
2029
2028
2027
2023
2022
2021
2020
2016
2015
2014
2013
2009
2008
2007
2006
2002
2001
2000
1999
1992
1991
1990
1989
1982
1981
1980
1979
1972
1971
1970
1769
Max.
Count
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
Factor
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
Segment
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
600
Sub-
Segment
173
181
167
167
173
181
167
167
173
181
167
167
173
181
167
167
173
181
167
167
173
181
167
167
518
192
518
192
518
192
518
192
518
192
518
192
518
192
518
192
518
192
518
517
Cell
1962
1961
1960
1959
1952
1951
1950
1949
1942
1941
1940
1939
1932
1931
1930
1929
1922
1921
1920
1919
1912
1911
1910
1909
1902
1898
1891
1887
1877
1873
1865
1861
1853
1849
1838
1834
1822
1818
1806
1802
1789
1785
1773
2092
Max.
Count
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
118
Factor
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0,0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0084746
106
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
590
600
600
600
600
600
600
600
Sub-
Segment
518
192
518
192
518
192
518
192
213
192
518
192
213
192
213
232
213
232
213
232
213
232
213
232
213
232
213
232
213
213
232
232
213
232
213
232
232
520
520
517
520
517
520
524
Cell
1755
1751
1738
1734
1718
1714
1698
1694
1678
1674
1658
1654
1638
1634
1616
1612
1594
1590
1572
1568
1546
1542
1520
1516
1490
1468
1460
1456
1429
1428
1424
1423
1390
1384
1352
1346
1305
2100
2099
2098
2097
2095
2094
1918
Max.
Count
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
137
118
118
118
118
118
118
118
Factor
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0072993
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
Segment
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
Sub-
Segment
520
517
520
517
520
517
520
517
520
517
517
520
522
520
522
520
520
521
522
522
520
526
521
526
521
526
521
526
521
526
521
526
521
524
230
524
230
230
524
230
230
524
230
247
Cell
2091
2089
2088
2086
2083
2081
2078
2076
2073
2070
2069
2066
2064
2061
2059
2056
2049
2042
2039
2038
2033
2031
2026
2024
2019
2017
2012
2010
2005
2003
1998
1996
1988
1978
1976
1968
1966
1956
1948
1946
1936
1928
1926
1541
Max.
Count
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
Factor
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0,0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
107
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
600
600
' 600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
800
Sub-
Segment
524
230
523
230
523
523
523
230
523
252
220
252
220
252
220
252
220
252
252
252
220
252
220
252
220
252
252
220
252
247
252
247
255
247
255
247
255
247
255
247
255
247
255
296
Cell
1908
1906
1897
1895
1886
1885
1884
1881
1872
1869
1860
1857
1848
1845
1833
1830
1817
1813
1797
1780
1768
1763
1750
1746
1733
1730
1729
1713
1709
1693
1689
1673
1669
1653
1649
1633
1629
1611
1607
1589
1585
1567
1562
509
Max.
Count
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
17
Factor
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.0084746
0.05882
Segment
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
620
620
620
620
620
620
630
800
800
800
800
800
800
800
800
800
800
800
800
800
830
Sub-
Segment
255
247
247
255
247
255
247
255
247
255
247
255
247
255
247
255
255
267
267
267
267
267
267
527
527
527
527
527
527
281
291
291
293
293
298
298
298
298
298
297
290
291
297
585
Cell
1536
1515
1514
1509
1485
1480
1455
1450
1422
1417
1383
1379
1345
1341
1304
1300
1299
1258
1210
1156
1078
984
983
1300
1298
1254
1206
1152
1151
1205
881
880
879
878
877
876
875
874
781
686
668
607
589
578
Max.
Count
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
118
6
6
6
6
6
6
1
17
17
17
17
17
17
17
17
17
17
17
17
17
16
Factor
0.0084746
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.00847
0.16667
0.16667
0.16667
0.16667
0.16667
0.16667
1
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.05882
0.0625
108
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
800
800
800
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
810
820
820
820
820
820
820
820
820
820
820
820
820
820
820
820
830
830
830
830
850
Sub-
Segment
294
294
294
312
314
320
324
324
334
334
334
342
342
342
342
354
354
324
354
354
326
325
316
319
581
581
9
9
9
581
9
581
9
374
9
374
374
374
374
585
585
585
585
292
Cell
436
370
307
683
682
681
680
679
678
677
676
675
674
673
672
671
670
588
587
586
508
435
369
306
583
582
581
580
579
504
503
431
430
364
363
301
228
170
169
660
659
658
657
1071
Max.
Count
17
17
17
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
16
16
16
16
9
Factor
0.05882
0.05882
0.05882
0.04762
0.04762
0.04762
0.04762
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.047619
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.066667
0.0625
0.0625
0.0625
0.0625
0.11111
Segment
830
830
830
830
830
830
830
830
830
830
830
840
840
840
840
840
840
840
840
840
840
840
840
840*
840
840
840
840
840
840
840
840
840
840
840
840
840
840
840
840
840
840
850
900
Sub-
Segment
585
383
585
585
383
585
583
383
383
583
582
417
417
534
534
534
403
403
406
406
417
534
403
406
417
439
439
457
457
457
403
406
417
457
406
417
537
537
537
456
457
456
292
385
Cell
577
503
502
501
429
428
427
362
361
360
299
572
571
570
569
567
499
498
497
496
495
494
426
425
424
423
422
421
420
419
359
358
357
356
296
295
294
293
292
291
290
226
1072
1810
Max.
Count
16
16
16
16
16
16
16
16
16
16
16
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
31
9
5
Factor
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.0625
0.032258
0.032258
0.032258
0.032258
0.032258
0.032258
0.032258
0.032258
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.03226
0.11111
0.2
109
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
850
850
850
850
850
850
850
860
860
860
860
860
860
860
860
860
860
860
860
870
870
870
870
870
870
880
880
880
880
880
880
880
880
880
880
880
880
880
880
890
890
900
900
940
Sub-
Segment
302
302
302
301
315
310
310
331
318
341
337
347
337
347
333
337
349
349
349
368
368
368
368
368
368
546
382
382
551
551
551
561
561
561
568
568
571
571
571
541
541
375
376
196
Cell
1070
1069
1068
1067
1066
1064
1063
1378
1340
1339
1297
1296
1253
1252
1200
1199
1198
1142
1141
1193
1136
1135
1053
1051
1050
1191
1133
1132
1131
1130
1129
1128
1127
1126
1125
1124
1123
1122
1121
1844
1843
1842
1827
1432
Max.
Count
9
9
9
9
9
9
9
12
12
12
12
12
12
12
12
12
12
12
12
6
6
6
6
6
6
14
14
14
14
14
14
14
14
14
14
14
14
14
14
2
2
5
5
37
Factor
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.08333
0.16667
0.16667
0.16667
0.16667
0.16667
0.16667
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.07143
0.5
0.5
0.2
0.2
0.02703
Segment
900
900
910
910
910
910
910
910
920
920
920
920
920
920
920
920
920
920
920
920
920
920
920
920
920
920
920
920
930
930
930
930
930
930
930
930
930
940
940
940
940
940
940
960
Sub-
Segment
377
387
547
392
392
555
555
555
422
422
422
422
402
402
557
557
450
450
569
569
569
574
468
479
479
578
578
578
135
135
135
135
135
135
135
135
135
196
196
196
196
196
196
275
Cell
1793
1777
1829
1812
1796
1779
1762
1745
1725
1705
1685
1665
1645
1625
1602
1580
1557
1504
1475
1474
1445
1408
1369
1329
1286
1242
1241
1187
1105
1104
1103
1102
1101
1016
1015
919
918
1493
1492
1491
1463
1461
1434
1150
Max.
Count
5
5
6
6
6
6
6
6
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
9
9
9
9
9
9
9
9
9
37
37
37
37
37
37
22
Factor
0.2
0.2
0.16667
0.16667
0.16667
0.16667
0.16667
0.16667
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.04545
110
-------
Table E. 15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Segment
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
940
950
950
950
950
950
950
950
950
950
960
960
960
960
990
Sub-
Segment
195
195
196
196
196
195
196
195
196
195
195
216
216
512
196
216
216
512
196
216
216
216
196
196
196
196
196
196
196
196
254
254
254
254
254
254
254
254
254
275
275
275
275
579
Cell
1431
1430
1396
1394
1393
1391
1358
1353
1318
1314
1313
1312
1311
1272
1271
1266
1265
1228
1227
1221
1220
1219
1173
1094
1007
1006
1005
1004
1003
1002
1212
1211
1157
1079
987
986
985
887
886
1154
1153
1152
1151
1117
Max.
Count
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
37
9
9
9
9
9
9
9
9
9
22
22
22
22
12
Factor
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.02703
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.11111
0.04545
0.04545
0.04545
0.04545
0.08333
Segment
960
960
960
960
960
960
960
960
960
960
960
960
960
960
960
960
960
970
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
980
990
990
990
990
Sub-
Segment
275
275
275
275
275
277
277
277
277
277
277
277
277
277
277
277
277
532
404
408
425
425
425
443
443
443
443
464
464
481
481
481
481
483
483
94
94
94
94
63
579
63
579
Cell
1149
1076
981
882
782
689
590
510
437
371
309
308
237
178
147
133
123
1742
1722
1702
1682
1662
1642
1622
1599
1577
1552
1526
1499
1469
1440
1402
1364
1324
1281
1236
1182
1107
1021
1247
1243
1190
1118
Max.
Count
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
22
1
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
12
12
12
12
Factor
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
0.04545
1
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.04762
0.08333
0.08333
0.08333
0.08333
111
-------
Table E.15.1
Phase IV Watershed Model Segments, Their Corresponding Chesapeake Bay
Water Quality Model Cells, and Loading Factors
Sub- Max.
Segment Segment Cell Count Factor
990 579 1116 12 0.08333
990 579 1115 12 0.08333
990 579 1114 12 0.08333
990 579 1113 12 0.08333
990 579 1112 12 0.08333
990 579 1027 12 0.08333
990 579 1026 12 0.08333
Sub-
Segment Segment
Cell
Max.
Count
Factor
112
-------
Section E.I6
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
In order to fully incorporate the littoral zone submerged aquatic vegetation (SAV) sub-
model into the Chesapeake Bay Water Quality Model, it was necessary to define those
shallow water littoral zone model cells in which the SAV sub-model would be turned on for
running during scenarios. These grow cells were then further subdivided into three
categories of model cells to reflect the three representative Bay SAV species for which the
Chesapeake Bay Water Quality Model littoral zone SAV sub-model would be parameterized.
Identification of SAV "Grow" Cells
In 1992, the Chesapeake Bay Program developed a series of tiered SAV distribution
restoration target maps as part of the SAV Technical Synthesis18 based on both present and
historical SAV distribution patterns and understanding of the physical habitat conditions
limiting potential SAV distribution. The Tier I target, adopted by the Chesapeake Executive
Council as a formal Bay Program goal in 1993, delineated restoration of SAV to areas
currently or previously inhabited by SAV as mapped through regional and bay wide aerial
surveys from 1971 through 1990. The Tier II target delineated restoration of SAV to all
shallow water areas delineated as existing or potential SAV habitat down to the one meter
depth contour. The Tier III target delineated restoration of SAV to all shallow water areas
delineated as existing or potential SAV habitat down to the two meter depth contour.
The GIS coverage of the Chesapeake Bay Water Quality Model segmentation was
overlaid onto the Tier III Chesapeake Bay SAV Distribution Restoration Target map.
Through visual inspection of the map overlay, the individual Water Quality model cells
which overlaid onto part of or were in close proximity to the Tier III target coverage within
were identified as SAV "grow" cells as described below. Given the Phase IV Chesapeake
Bay Water Quality Model segmentation and the Chesapeake Bay shoreline GIS shoreline
coverage did not exactly correspond (and in some case diverged from each other), the
following series of decision rules were developed and adhered to where possible.
• In cases where there was clearly no potential SAV habitat along the Chesapeake Bay
shoreline, the adjacent outer model cell depicting that shoreline and adjoining littoral
zone habitat was designated a SAV "no grow" cell (e.g., Calvert Cliffs and model cell
1125) and not considered further.
18 Batiuketal. 1992. Chesapeake Bay Submerged Aquatic Vegetation Habitat Requirements and
Restoration Goals: A Technical Synthesis. CBP/TRS 83/92. Chesapeake Bay Program, Annapolis, Maryland.
113
-------
• In cases where there was clearly potential SAV habitat along the shoreline, adjacent outer
model cell that was depicting that shoreline and adjoining littoral zone habitat was
designated a SAV "grow" cell (e.g., Patuxent River and model cell 1581).
• In cases where there was clearly potential SAV habitat extending well out away from the
shoreline into shallow water areas, the model cells that depicted that shallow water region
were designated SAV "grow" cells (e.g., Tangier Sound and model cells 489, 418, and
355 just north of South Marsh Island).
• In cases where one model cell protruded out from the surrounding model cells to depict
a minor tributary or embayment and there was potential SAV habitat within the tributary
or embayment and along the mainstem tributary's shoreline, that protruding model cell
along with the adjacent model cell were designated SAV "grow" cells (e.g., Potomac
River and Wicomico River model cells 1474 and 1475, respectively).
There are other instances where the best professional judgement of the Chesapeake Bay
Program Office staff was used to make the final determination when the model cell in
question did not fall neatly into one of the above categories.
The compiled listing of SAV grow cells were entered into a spreadsheet and quality
assured through a visual cross check and comparison of each spreadsheet listed grow cell
with the original GIS Tier Ill/Model Segmentation overlay maps on which the SAV "grow"
cells were identified. The spreadsheet file listing the SAV "grow" cells was sent to the U.S.
Army Corps of Engineers-Waterways Experiment Station where the file was incorporated
into the Chesapeake Bay Water Quality Model segmentation program. A map of the model
segmentation with the SAV "grow" cells identified was produced and sent back to the
Chesapeake Bay Program Office. This SAV grow cell map was compared through a visual
cross check with the original GIS Tier Ill/Model Segmentation overlay maps on which the
SAV "grow" cells were identified.
Partitioning the SAV Grow Cells by the Three Modeled Species
The Chesapeake Bay Program Living Resources SAV Workgroup decided to select
Vallisneria americana, Potamogeton pectinatus, and Zoster a marina as the three species for
which the Chesapeake Bay Water Quality Model littoral zone SAV sub-model would be
parameterized. These three species were considered the most representative species for the
modeling objective as: 1) all three species are native to Chesapeake Bay; 2) their combined
existing and potential habitat distribution covered the full range of Bay salinities, and 3) their
minimum light requirements were generally the most conservative for their habitat range.
114
-------
The Chesapeake Bay Program developed a series of distribution restoration target maps
as part of the production of the 1992 SAV Technical Synthesis based on both existing and
historical SAV distribution patterns. The information on actual past and present species
distribution derived from aerial and ground surveys of present SAV distribution, survey from
past pollen and seed records, and the published literature. Potential distribution was based
on the above information and the individual species distribution limits as defined by their
upper and lower salinity tolerances.
The Chesapeake Bay Program Office staff overlaid the Chesapeake Bay Distribution
Restoration Target maps for Vallisneria americana, Potamogeton pectinatus, and Zoster a
marina from the SAV Technical Synthesis to produce a single map outlining the
actual/potential distribution of these three species. This integrated map of the three species'
distribution was further refined through an analysis of distribution of 1985-1995 monthly
mean salinity data from all the Chesapeake Bay Water Quality Monitoring Program stations.
The integrated species' distribution map was further refined to ensure that all areas of the
Bay where the mean salinity was generally (between the 25th and 75th percentile) below 5
part per thousand were delineated as Vallisneria habitat, areas with a mean salinity between
5 and 18 ppt were delineated as Potamogeton habitat, and areas with a mean salinity above
18 ppt were delineated as Zostera habitat. This analysis involving monthly mean salinity
data resulted in relatively minor refinements to the integrated species' distribution map
developed originally based on the SAV Technical Synthesis species restoration target maps.
The Chesapeake Bay Program Living Resources Subcommittee's SAV Workgroup
reviewed and approved the final integrated species distribution map. The integrated species
distribution map was then overlaid on top of the Chesapeake Bay Water Quality Model
segmentation map on which the SAV grow model cells had been delineated. Based on visual
and then GIS analysis of the overlay, each delineated SAV grow cell was categorized and
labeled as either a Vallisneria, Potamogeton, or Zostera SAV grow cell (Table E.I6.1).
115
-------
Table E. 16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
Bay WQ Principal
Model Cell Species Salinity Regime
112 Zostera High Mesohaline/Polyhaline
113 Zostera High Mesohaline/Polyhaline
119 Zostera High Mesohaline/Polyhaline
120 Zostera High Mesohaline/Polyhaline
122 Zostera High Mesohaline/Polyhaline
128 Zostera High Mesohaline/Polyhaline
131 Zostera High Mesohaline/Polyhaline
132 Vallisneria Tidal Fresh/Oligohaline
138 Zostera High Mesohaline/Polyhaline
141 Zostera High Mesohaline/Polyhaline
142 Zostera High Mesohaline/Polyhaline
143 Zostera High Mesohaline/Polyhaline
144 Zostera High Mesohaline/Polyhaline
145 Potamogeton Low Mesohaline
146 Vallisneria Tidal Fresh/Oligohaline
152 Zostera High Mesohaline/Polyhaline
156 Zostera High Mesohaline/Polyhaline
157 Zostera High Mesohaline/Polyhaline
158 Zostera High Mesohaline/Polyhaline
159 Zostera High Mesohaline/Polyhaline
160 Zostera High Mesohaline/Polyhaline
161 Zostera High Mesohaline/Polyhaline
162 Zostera High Mesohaline/Polyhaline
163 Potamogeton low
164 Potamogeton Low Mesohaline
165 Potamogeton Low Mesohaline
166 Potamogeton Low Mesohaline
167 Potamogeton Low Mesohaline
168 Potamogeton Low Mesohaline
169 Potamogeton Low Mesohaline
170 Potamogeton Low Mesohaline
171 Potamogeton Low Mesohaline
172 Potamogeton Low Mesohaline
173 Potamogeton Low Mesohaline
174 Vallisneria Tidal Fresh/Oligohaline
175 Vallisneria Tidal Fresh/Oligohaline
176 Vallisneria Tidal Fresh/Oligohaline
177 Vallisneria Tidal Fresh/Oligohaline
183 Zostera High Mesohaline/Polyhaline
184 Zostera High Mesohaline/Polyhaline
185 Zostera High Mesohaline/Polyhaline
186 Zostera High Mesohaline/Polyhaline'
187 Zostera High Mesohaline/Polyhaline
188 Zostera High Mesohaline/Polyhaline
189 Zostera High Mesohaline/Polyhaline
190 Zostera High Mesohaline/Polyhaline
191 Zostera High Mesohaline/Polyhaline
192 Zostera High Mesohaline/Polyhaline
193 Zostera High Mesohaline/Polyhaline
194 Zostera High Mesohaline/Polyhaline
195 Zostera High Mesohaline/Polyhaline
196 Zostera High Mesohaline/Polyhaline
197 Zostera High Mesohaline/Polyhaline
198 Zostera High Mesohaline/Polyhaline
199 Zostera High Mesohaline/Polyhaline
200 Zostera High Mesohaline/Polyhaline
201 Zostera High Mesohaline/Polyhaline
Bay WQ Principal
Model Cell Species
1,440 Potamogeton
1,445 Potamogeton
1,446 Potamogeton
1,449 Potamogeton
1,450 Potamogeton
1,455 Potamogeton
1,456 Zostera
1,460 Zostera
1,461 Zostera
1,463 Zostera
1,464 Potamogeton
1,468 Potamogeton
1,469 Potamogeton
1,474 Potamogeton
1,475 Potamogeton
1,476 Potamogeton
1,479 Potamogeton
1,480 Potamogeton
1,485 Potamogeton
1,486 Zostera
1,490 Zostera
1,491 Zostera
1,493 Zostera
1,494 Potamogeton
1,498 Potamogeton
1,499 Potamogeton
1,504 Potamogeton
1,505 Potamogeton
1,508 Potamogeton
1,509 Potamogeton
1,514 Potamogeton
1,515 Potamogeton
1,516 Zostera
1,520 Zostera
1,521 Potamogeton
1,525 Potamogeton
1,526 Potamogeton
1,531 Potamogeton
1,532 Potamogeton
1,535 Potamogeton
1,536 Potamogeton
1,537 Potamogeton
1,541 Potamogeton
1,542 Zostera
1,546 Zostera
1,547 Potamogeton
1,551 Potamogeton
1,552 Potamogeton
1,557 Potamogeton
1,558 Potamogeton
1,561 Potamogeton
1,562 Potamogeton
1,563 Potamogeton
1,567 Potamogeton
1,568 Zostera
1,572 Zostera
1,573 Potamogeton
Salinity Regime
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
116
-------
Table E.16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
Bay WQ Principal
Model Cell Species
202 Zostera
203 Zostera
204 Zostera
205 Zostera
206 Zostera
207 Zostera
208 Zostera
209 Zostera
210 Zostera
211 Zostera
213 Zostera
214 Zostera
215 Zostera
216 Zostera
217 Zostera
218 Zostera
219 Zostera
223 Zostera
224 Zostera
226 Zostera
227 Potamogeton
228 Potamogeton
233 Vallisneria
234 Vallisneria
235 Vallisneria
236 Vallisneria
237 Zostera
242 Zostera
243 Zostera
244 Zostera
245 Zostera
246 Zostera
247 Zostera
282 Zostera
283 Zostera
284 Zostera
285 Zostera
286 Zostera
287 Zostera
288 Zostera
289 Zostera
290 Zostera
291 zostera
292 Potamogeton
293 Potamogeton
294 Potamogeton
295 Potamogeton
296 Potamogeton
297 Potamogeton
298 Potamogeton
299 Potamogeton
300 Potamogeton
301 Potamogeton
306 Vallisneria
308 Zostera
350 Zostera
351 Zostera
Salinity Regime
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
high
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Bay WQ Principal
Model Cell Species
1,576 Potamogeton
1,577 Potamogeton
1,580 Potamogeton
1,581 Potamogeton
1,584 Potamogeton
1,585 Potamogeton
1,589 Potamogeton
1,590 Zostera
1,594 Zostera
1,595 Potamogeton
1,598 Potamogeton
1,599 Vallisneria
1,602 Vallisneria
1,603 Potamogeton
1,606 Potamogeton
1,607 Potamogeton
1,611 Potamogeton
1,612 Zostera
1,616 Zostera
1,617 Potamogeton
1,621 Potamogeton
1,622 Vallisneria
1,625 Vallisneria
1,626 Potamogeton
1,628 Potamogeton
1,629 Potamogeton
1,633 Potamogeton
1,634 Zostera
1,638 Zostera
1,639 Vallisneria
1,641 Vallisneria
1,642 Vallisneria
1,645 Vallisneria
1,646 Potamogeton
1,648 Potamogeton
1,649 Potamogeton
1,653 Potamogeton
1,654 Potamogeton
1,658 Potamogeton
1,659 Vallisneria
1,661 Vallisneria
1,662 Vallisneria
1,665 Vallisneria
1,666 Vallisneria
1,668 Vallisneria
1,669 Potamogeton
1,673 Potamogeton
1,674 Potamogeton
1,678 Potamogeton
1,679 Vallisneria
1,681 Vallisneria
1,682 Vallisneria
1,685 Vallisneria
1,686 Vallisneria
1,688 Vallisneria
1,689 Potamogeton
1,693 Potamogeton
Salinity Regime
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
117
-------
Table E. 16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
Bay WQ
Model Cell
352
353
354
355
356
357
358
359
360
361
362
363
364
367
368
369
371
414
415
416
417
418
419
420
421
422
423
424
425
426
428
429
430
431
434
435
480
481
482
483
484
485
486
487
488
489
490
492
493
494
495
497
498
501
502
504
507
Principal
Species
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Vallisneria
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Vallisneria
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Vallisneria
Salinity Regime
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Bay WQ Principal
Model Cell Species
1,694 Potamogeton
1,698 Potamogeton
1,699 Vallisneria
1,701 Vallisneria
1,702 Vallisneria
1,705 Vallisneria
1,706 Vallisneria
1,708 Vallisneria
1,709 Potamogeton
1,713 Potamogeton
1,714 Potamogeton
1,718 Potamogeton
1,719 Vallisneria
1,721 Vallisneria
1,722 Vallisneria
1,725 Vallisneria
1,726 Vallisneria
1,728 Vallisneria
1,729 Potamogeton
1,733 Potamogeton
1,734 Potamogeton
1,738 Potamogeton
1,739 Vallisneria
1,741 Vallisneria
1,742 Vallisneria
1,745 Vallisneria
1,746 Vallisneria
1,750 Vallisneria
1,751 Potamogeton
1,755 Potamogeton
1,756 Vallisneria
1,758 Vallisneria
1,759 Vallisneria
1,762 Vallisneria
1,763 Vallisneria
1,767 Vallisneria
1,768 Vallisneria
1,769 Potamogeton
1,773 Potamogeton
1,774 Vallisneria
1,776 Vallisneria
1,777 Vallisneria
1,779 Vallisneria
1,780 Vallisneria
1,784 Vallisneria
1,785 Potamogeton
1,789 Potamogeton
1,790 Vallisneria
1,792 Vallisneria
1,793 Vallisneria
1,794 Vallisneria
1,796 Vallisneria
1,797 Vallisneria
1,801 Vallisneria
1,802 Potamogeton
1,806 Potamogeton
1,807 Vallisneria
Salinity Regime
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
118
-------
Table E. 16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
Bay WQ Principal
Model Cell Species
508 Vallisneria
565 Zostera
566 Zostera
567 Zostera
568 Zostera
569 Zostera
570 Potamogeton
571 Potamogeton
572 Potamogeton
577 Potamogeton
578 Potamogeton
580 Potamogeton
581 Potamogeton
582 Potamogeton
583 Potamogeton
587 Vallisneria
588 Vallisneria
589 Vallisneria
657 Potamogeton
658 Potamogeton
659 Potamogeton
660 Potamogeton
670 Vallisneria
674 Vallisneria
675 Vallisneria
676 Vallisneria
677 Vallisneria
678 Vallisneria
679 Vallisneria
682 Vallisneria
683 Vallisneria
684 Vallisneria
685 Vallisneria
686 Vallisneria
687 Vallisneria
688 Vallisneria
876 Vallisneria
877 Vallisneria
878 Vallisneria
879 Vallisneria
880 Vallisneria
881 Vallisneria
919 Zostera
926 Zostera
973 Vallisneria
974 Vallisneria
975 Vallisneria
976 Vallisneria
977 Vallisneria
978 Vallisneria
979 Vallisneria
980 Vallisneria
984 Zostera
985 Zostera
986 Zostera
987 Zostera
999 Zostera
Salinity Regime
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Bay WQ Principal
Model Cell Species
1,809 Vallisneria
1,810 Vallisneria
1,812 Vallisneria
1,813 Vallisneria
1,817 Vallisneria
1,818 Potamogeton
1,822 Potamogeton
1,823 Vallisneria
1,826 Vallisneria
1,827 Vallisneria
1,829 Vallisneria
1,830 Vallisneria
1,833 Vallisneria
1,834 Potamogeton
1,838 Potamogeton
1,839 Vallisneria
1,841 Vallisneria
1,842 Vallisneria
1,844 Vallisneria
1,845 Vallisneria
1,848 Vallisneria
1,849 Potamogeton
1,853 Potamogeton
1,854 Vallisneria
1,856 Vallisneria
1,857 Vallisneria
1,860 Vallisneria
1,861 Potamogeton
1,865 Potamogeton
1,866 Vallisneria
1,868 Vallisneria
1,869 Vallisneria
1,872 Vallisneria
1,873 Potamogeton
1,877 Potamogeton
1,878 Vallisneria
1,880 Vallisneria
1,881 Vallisneria
1,883 Vallisneria
1,884 Vallisneria
1,885 Vallisneria
1,886 Vallisneria
1,887 Potamogeton
1,888 Potamogeton
1,892 Vallisneria
1,894 Vallisneria
1,895 Vallisneria
1,897 Vallisneria
1,898 Potamogeton
1,902 Potamogeton
1,903 Vallisneria
1,905 Vallisneria
1,906 Vallisneria
1,908 Vallisneria
1,909 Vallisneria
1,910 Vallisneria
1,911 Vallisneria
Salinity Regime
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohatine
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
119
-------
Table E. 16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
Bay WQ Principal
Model Cell Species
1,000 Zostera
1,001 Zostera
1,002 Zostera
1,003 Zostera
1,004 Zostera
1,005 Zostera
1,006 Zostera
1,007 Zostera
1,009 Zostera
1,010 Zostera
1,015 Zostera
1,016 Zostera
1,021 Zostera
1,051 Potamogeton
1,053 Potamogeton
1,063 Vallisneria
1,064 Vallisneria
1,065 Vallisneria
1,066 Vallisneria
1,067 Vallisneria
1,068 Vallisneria
1,069 Vallisneria
1,070 Vallisneria
1,071 Vallisneria
1,072 Vallisneria
1,073 Vallisneria
1,075 Vallisneria
1,078 Zostera
1,079 Zostera
1,086 Zostera
1,087 Zostera
1,094 Zostera
1,095 Zostera
1,096 Zostera
1,101 Zostera
1,102 Zostera
1,103 Zostera
1,104 Zostera
1,105 Zostera
1,106 Zostera
1,107 Zostera
1,112 Zostera
1,113 Zostera
1,131 Potamogeton
1,132 Potamogeton
1,133 Potamogeton
1,136 Potamogeton
1,137 Vallisneria
1,142 Vallisneria
1,143 Vallisneria
1,144 Vallisneria
1,145 Vallisneria
1,146 Vallisneria
1,148 Vallisneria
1,156 Zostera
1,157 Zostera
1,165 Zostera
Salinity Regime
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaiine
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Bay WQ Principal
Model Cell Species
1,912 Vallisneria
1,913 Vallisneria
1,915 Vallisneria
1,916 Vallisneria
1,918 Vallisneria
1,919 Vallisneria
1,920 Vallisneria
1,921 Vallisneria
1,922 Vallisneria
1,923 Vallisneria
1,925 Vallisneria
1,926 Vallisneria
1,928 Vallisneria
1,929 Vallisneria
1,930 Vallisneria
1,931 Vallisneria
1,932 Vallisneria
1,933 Vallisneria
1,935 Vallisneria
1,936 Vallisneria
1,938 Vallisneria
1,939 Vallisneria
1,940 Vallisneria
1,941 Vallisneria
1,942 Vallisneria
1,943 Vallisneria
1,945 Vallisneria
1,946 Vallisneria
1,948 Vallisneria
1,949 Vallisneria
1,950 Vallisneria
1,951 Vallisneria
1,952 Vallisneria
1,953 Vallisneria
1,955 Vallisneria
1,956 Vallisneria
1,958 Vallisneria
1,959 Vallisneria
1,960 Vallisneria
1,961 Vallisneria
1,962 Vallisneria
1,963 Vallisneria
1,965 Vallisneria
1,966 Vallisneria
1,968 Vallisneria
1,969 Vallisneria
1,970 Vallisneria
1,971 Vallisneria
1,972 Vallisneria
1,973 Vallisneria
1,975 Vallisneria
1,976 Vallisneria
1,978 Vallisneria
1,979 Vallisneria
1,980 Vallisneria
1,981 Vallisneria
1,982 Vallisneria
Salinity Regime
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
120
-------
Table E. 16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
Bay WQ Principal
Model Cell Species
1,166 Zostera
1,173 Zostera
1,174 Zostera
1,175 Zostera
1,180 Zostera
1,181 Zostera
1,182 Zostera
1,187 Zostera
1,191 Vallisnena
1,192 Vallisneria
1,193 Vallisneria
1,194 Vallisneria
1,198 Vallisneria
1,199 Vallisneria
1,200 Vallisneria
1,201 Vallisneria
1,202 Vallisneria
1,204 Vallisneria
1,210 Zostera
1,211 Zostera
1,212 Zostera
1,213 Zostera
1,219 Zostera
1,220 Zostera
1,221 Zostera
1,222 Zostera
1,227 Zostera
1,228 Zostera
1,229 Zostera
1,234 Zostera
1,235 Zostera
1,236 Zostera
1,241 Zostera
1,242 Zostera
1,243 Zostera
1,247 Zostera
1,248 Vallisneria
1,253 Vallisneria
1,254 Zostera
1,259 Zostera
1,265 Zostera
1,266 Zostera
1,271 Zostera
1,272 Zostera
1,273 Zostera
1,278 Zostera
1,279 Zostera
1,280 Zostera
1,281 Zostera
1,286 Zostera
1,287 Zostera
1,291 Zostera
1,292 Vallisneria
1,296 Vallisneria
1,297 Vallisneria
1,298 Zostera
1,299 Zostera
Salinity Regime
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Bay WQ Principal
Model Cell Species
1,983 Vallisneria
1,985 Vallisneria
1,986 Vallisneria
1,988 Vallisneria
1,989 Vallisneria
1,990 Vallisneria
1,991 Vallisneria
1,992 Vallisneria
1,993 Vallisneria
1,995 Vallisneria
1,996 Vallisneria
1,998 Vallisneria
1,999 Vallisneria
2,000 Vallisneria
2,001 Vallisneria
2,002 Vallisneria
2,003 Vallisneria
2,005 Vallisneria
2,006 Vallisneria
2,007 Vallisneria
2,008 Vallisneria
2,009 Vallisneria
2,010 Vallisneria
2,012 Vallisneria
2,013 Vallisneria
2,014 Vallisneria
2,015 Vallisneria
2,016 Vallisneria
2,017 Vallisneria
2,019 Vallisneria
2,020 Vallisneria
2,021 Vallisneria
2,022 Vallisneria
2,023 Vallisneria
2,024 Vallisneria
2,026 Vallisneria
2,027 Vallisneria
2,028 Vallisneria
2,029 Vallisneria
2,030 Vallisneria
2,031 Vallisneria
2,033 Vallisneria
2,034 Vallisneria
2,035 Vallisneria
2,036 Vallisneria
2,037 Vallisneria
2,038 Vallisneria
2,039 Vallisneria
2,040 Vallisneria
2,042 Vallisneria
2,043 Vallisneria
2,044 Vallisneria
2,045 Vallisneria
2,046 Vallisneria
2,047 Vallisneria
2,049 Vallisneria
2,050 Vallisneria
Salinity Regime
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
121
-------
Table E. 16.1
Chesapeake Bay Water Quality Model Cells Identified as Potential SAV Habitat
Within Which the Littoral Zone SAV Submodel will be Run
BayWQ
Model Cell
1,300
1,305
1,311
1,312
1,313
1,318
1,319
1,323
1,324
1,329
1,330
1,334
1,335
1,339
1,340
1,341
1,346
1,352
1,353
1,358
1,359
1,363
1,364
1,369
1,370
1,373
1,379
1,384
1,390
1,391
1,392
1,393
1,396
1,397
1,401
1,402
1,407
1,408
1,409
1,412
1,417
1,422
1,423
1,429
1,430
1,431
1,432
1,434
1,435
1,439
Principal
Species
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Zostera
Zostera
Vallisneria
Vallisneria
Vallisneria
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Potamogeton
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Zostera
Potamogeton
Potamogeton
Salinity Regime
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
Low Mesohaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
High Mesohaline/Polyhaline
Low Mesohaline
Low Mesohaline
Bay WQ Principal
Model Cell Species
2,051 Vallisneria
2,052 Vallisneria
2,053 Vallisneria
2,054 Vallisneria
2,056 Vallisneria
2,057 Vallisneria
2,058 Vallisneria
2,059 Vallisneria
2,061 Vallisneria
2,062 Vallisneria
2,063 Vallisneria
2,064 Vallisneria
2,066 Vallisneria
2,067 Valiisneria
2,068 Vallisneria
2,069 Vallisneria
2,073 Vallisneria
2,074 Vallisneria
2,075 Vallisneria
2,076 Vallisneria
2,078 Vallisneria
2,079 Vallisneria
2,080 Vallisneria
2,081 Vallisneria
2,083 Vallisneria
2,084 Vallisneria
2,085 Vallisneria
2,086 Vallisneria
2,088 Vallisneria
2,089 Vallisneria
2,091 Vallisneria
2,092 Vallisneria
2,094 Vallisneria
2,095 Vallisneria
2,097 Vallisneria
2,098 Vallisneria
2,100 Vallisneria
Salinity Regime
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
Tidal Fresh/Oligohaline
122
-------
Section E.I7
*
Phase IV Chesapeake Bay Watershed Model and Regional Acid Deposition Model
Linkage
A direct linkage has been foraged to facilitate the incorporation of the Regional Acid
Deposition Model (RADM) output data into development of input decks for running
scenarios through the Phase IV Watershed Model. The linkage between the two models was
developed by using GIS overlay of the Watershed Model segments coverage and the 20x20
km grid of the RADM model coverage. RADM model runs are based on two different
resolution grids: 20x20 km and 80x80 km grid. Figure E.I7.1 shows the high and low
resolution RADM grids domain as they relate spatially to the United States coverage. For
purposes of simulating atmospheric deposition loads to the Chesapeake Bay watershed, it
was necessary to develop a RADM grid with better resolution than the 80x80 km. With this
in mind, the 20x20 km grid was developed (Figure E. 17.2). Figure E. 17.3 shows the overlay
of the high resolution 20x20 km grid with the Chesapeake Bay Water Quality Model cells
and the Phase IV Watershed Model segments. The GIS coverages overlaid allow
development of a spatial relationship between the air, watershed, and water quality models.
The following table contains information about the spatial relationship between the
models and the percentage of the RADM cells within the respective Phase IV Watershed
Model segments (Table E.I7.1). RADM cell numbering is by ColRow, a combination of
Column and Row numbering sequences.
123
-------
Figure E. 17.1
Regional Acid Deposition Model
(RADM) Grids Domain
KJH M^> Date: July. 1997
0
United States of America
Low Resolution RADM 80 x 80 KM Grid
High Resolution RADM 20 x 20 KM Grid
Source: U.S.E.P.A. Chesapeake Bay Program Modeling Team
124
-------
Figure E. 17.2
Regional Acid Deposition Model 20 x 20 km Cells,
Which Overlay the Chesapeake Bay Basin
NEW YORK OT^-f^^
"---te^^ar
PENNSYLVANIA
DELAWARE
/^'6^^'^^^17/3^on^^^ii^
~ 4——j(L >?330!6i' ,.., / ~ 1 -—.L. / -'8^'7/ioni7 •' "1w^^-i-
looiZi,;/^^—i!4^6/35oi6/360]6r~^—^° i^"KoJf~~i
^W-'^r^q^-,/,^^^
&-4/320,4/3;:j7~«^370,5/380-^f^^^
/5fc/OT1^i£^^^
fe?^^^^^^-^s
^^fc^t^^
MARYLAND
WEST
VIRGINIA
VIRGINIA
KJH Map Dam. July. 1997
Source: U.S. E.P.A. Chesapeake Bay Program Modeling Team
125
-------
Figure El7.3
Regional Acid Deposition Model Grid,
Phase IV Chesapeake Bay Watershed Model Segments,
and Chesapeake Bay Water Quality Model Cells
High Resolution RADM 20 x 20 KM Grid
Chesapeake Bay Water Quality Model Cells / ~£
Phase IV Watershed Model Segments
KJH Map ore July. 1997
Source: U.S. E.P.A. Chesapeake Bay Program Modeling Team
126
-------
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E.17.1
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
28009
28009
28010
28010
28011
28011
29009
29009
29010
29010
29011
29011
29012
29012
29012
29013
29013
29014
30009
30009
30010
30010
30011
30012
30012
30013
30013
30013
30014
30014
30015
30015
30016
31010
31010
31011
31012
31013
31013
31014
31014
31015
31015
31015
31015
31016
31016
31016
31016
31017
31017
31018
31018
31019
31019
31020
31020
31021
31021
32010
32010
32011
32011
32012
35009
35010
N/A
270
N/A
270
N/A
270
N/A
270
N/A
270
N/A
270
N/A
265
270
N/A
265
N/A
N/A
270
N/A
270
270
265
270
N/A
265
270
N/A
265
N/A
265
N/A
N/A
270
270
270
265
270
265
270
N/A
170
265
270
N/A
170
265
270
N/A
170
N/A
170
N/A
160
N/A
160
N/A
160
N/A
270
N/A
270
270
N/A
N/A
0.77
0.23
0.63
0.37
0.95
0.05
0.67
0.33
0.09
0.91
0.07
0.93
0.47
0.03
0.50
0.98
0.02
1.00
0.99
0.01
0.22
0.78
1.00
0.01
0.99
0.15
0.52
0.33
0.49
0.51
0.91
0.09
1.00
0.43
0.57
1.00
1.00
0.04
0.96
0.35
0.65
0.03
0.09
0.57
0.31
0.13
0.84
0.02
0.00
0.40
0.60
0.70
0.30
0.99
0.01
0.58
0.42
0.99
0.01
0.85
0.15
0.02
0.98
1.00
1.00
0.42
32013
32014
32014
32015
32015
32015
32016
32016
32016
32017
32018
32018
32019
32019
32019
32020
32020
32020
32021
32021
32022
32022
32027
32028
32028
32029
32029
33010
33010
33010
33011
33011
33012
33012
33013
33013
33013
33014
33014
33015
33016
33016
33016
33017
33017
33017
33018
33018
33018
33019
33019
33019
33020
33020
33021
33021
33022
33022
33023
33023
33024
33024
33024
33025
33025
33026
270
190
270
170
190
270
170
190
270
170
N/A
170
N/A
160
170
N/A
160
170
N/A
160
N/A
160
N/A
N/A
50
N/A
50
N/A
270
280
270
280
270
280
190
270
280
190
270
190
170
190
200
170
190
200
170
175
200
160
170
175
160
170
160
170
N/A
160
N/A
160
N/A
90
160
N/A
90
N/A
1.00
0.02
0.98
0.07
0.11
0.81
0.94
0.03
0.03
1.00
0.04
0.96
0.16
0.18
0.66
0.03
0.96
0.01
0.14
0.86
0.53
0.47
1.00
0.74
0.26
0.82
0.18
0.41
0.06
0.53
0.69
0.31
0.60
0.40
0.31
0.62
0.07
0.95
0.05
1.00
0.09
0.89
0.03
0.38
0.12
0.50
0.74
0.08
0.18
0.08
0.90
0.02
0.50
0.50
0.98
0.02
0.02
0.98
0.23
0.77
0.49
0.26
0.26
0.91
0.09
1.00
33028
33028
33029
33029
33030
33030
33030
33031
33031
33031
33032
33032
33033
33033
34009
34009
34010
34010
34011
34012
34013
34013
34013
34014
34014
34015
34016
34016
34017
34017
34018
34018
34019
34019
34019
34020
34020
34021
34021
34021
34022
34022
34022
34023
34023
34024
34024
34024
34025
34025
34026
34026
34026
34027
34027
34027
34028
34028
34029
34030
34030
34031
34031
34032
34033
34033
N/A
50
N/A
50
N/A
50
60
N/A
50
60
N/A
60
N/A
60
N/A
280
N/A
280
280
280
190
270
280
190
280
190
190
200
190
200
175
200
170
175
200
170
175
160
170
175
160
170
175
160
175
90
160
175
N/A
90
N/A
90
100
N/A
50
100
50
100
50
50
60
50
60
60
N/A
60
0.00
1.00
0.03
0.97
0.33
0.63
0.05
0.36
0.00
0.64
0.58
0.42
0.86
0.14
0.97
0.03
0.17
0.83
1.00
1.00
0.40
0.02
0.57
0.96
0.04
1.00
0.60
0.40
0.00
1.00
0.33
0.67
0.08
0.91
0.01
0.30
0.70
0.14
0.50
0.36
0.76
0.08
0.17
0.58
0.42
0.69
0.26
0.04
0.00
1.00
0.14
0.37
0.49
0.07
0.31
0.62
0.74
0.26
1.00
1.00
0.00
0.26
0.74
1.00
0.16
0.84
127
-------
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E.17.1
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
35010
35010
35011
35011
35012
35013
35014
35014
35015
35015
35016
35016
35016
35017
35017
35018
35018
35019
35019
35020
35020
35020
35021
35021
35022
35022
35022
35023
35023
35024
35024
35024
35025
35026
35026
35027
35027
35028
35028
35029
35029
35029
35030
35030
35031
35031
35032
35033
35034
35034
35035
35037
35037
35038
35038
36009
36009
36010
36010
36010
36011
36011
36012
36013
36014
36015
280
300
280
300
280
280
190
280
190
280
190
200
280
190
200
190
200
175
200
175
200
740
175
740
170
175
740
175
740
90
175
740
90
90
100
90
100
50
100
50
60
100
50
60
50
60
60
60
N/A
60
N/A
N/A
10
N/A
10
N/A
300
N/A
280
300
280
300
280
280
280
230
0.30
0.28
0.99
0.01
1.00
1.00
0.10
0.90
0.49
0.52
0.87
0.13
0.01
0.53
0.47
0.04
0.96
0.26
0.74
0.78
0.13
0.09
0.93
0.07
0.00
0.97
0,03
0,95
0.05
0.62
0.33
0.05
1.00
0.60
0.40
0.05
0.95
0.01
0.99
0.64
0.19
0.17
0.98
0.02
0.07
0.93
1.00
1.00
0.60
0.40
1.00
0.70
0.30
0.91
0.09
0.71
0.29
0.05
0.02
0.93
0.96
0.04
1.00
1.00
1.00
0.22
33027
33027
36015
36016
36016
36016
36017
36017
36018
36018
36018
36019
36019
36020
36020
36021
36021
36022
36022
36023
36023
36024
36024
36025
36025
36025
36026
36026
36027
36027
36028
36029
36029
36029
36030
36030
36031
36032
36033
36034
36034
36035
36035
36035
36036
36036
36037
36037
36038
36038
36039
36039
37009
37009
37010
37010
37011
37011
37012
37013
37014
37014
37014
37014
37015
37015
N/A
50
280
190
230
280
190
230
190
200
230
190
200
200
740
175
740
175
740
175
740
90
740
90
100
740
90
100
90
100
100
50
60
50
50
60
60
60
60
N/A
60
N/A
10
60
N/A
10
N/A
10
N/A
10
N/A
10
N/A
300
280
300
280
300
260
280
230
250
260
280
230
250
0.60
0.40
0.78
0.15
0.83
0.03
0.50
0.50
0.68
0.15
0.17
0.14
0.86
0.37
0.63
0.00
1.00
0.10
0.90
0.33
0.67
0.10
0.90
0.14
0.63
0.23
0.48
0.52
0.31
0.69
1.00
0.02
0.62
0.36
0.20
0.80
1.00
1.00
1.00
0.00
1.00
0.30
0.33
0.37
0.42
0.58
0.04
0.96
0.24
0.76
0.77
0.23
0.42
0.58
0.05
0.95
0.76
0.24
1.00
1.00
0.00
0.00
0.43
0.57
0:64
0.21
34034
34034
37018
37018
37018
37019
37019
37019
37019
37020
37020
37020
37021
37021
37021
37022
37023
37023
37024
37024
37024
37024
37025
37025
37025
37025
37026
37026
37026
37027
37028
37029
37029
37029
37030
37030
37031
37032
37033
37034
37035
37035
37036
37037
37038
37038
37039
37039
38009
38009
38010
38010
38011
38011
38011
38012
38012
38013
38013
38013
38014
38014
38014
38015
38015
38015
N/A
60
190
200
230
190
200
220
230
200
220
740
180
200
740
740
730
740
80
100
730
740
80
100
730
740
80
100
730
100
100
60
80
100
60
80
60
60
60
60
10
60
10
10
N/A
10
N/A
10
N/A
300
N/A
300
280
290
300
280
290
260
280
290
250
260
280
230
235
250
0.98
0.02
0.03
0.02
0.94
0.00
0.57
0.26
0.16
0.66
0.00
0.33
0.02
0.19
0.79
1.00
0.16
0.84
0.00
0.01
0.82
0.17
0.18
0.30
0.44
0.07
0.00
0.85
0.14
1.00
1.00
0.31
0.36
0.33
0.87
0.13
1.00
1.00
1.00
1.00
0.74
0.26
1.00
1.00
0.18
0.82
0.62
0.38
0.92
0.08
0.02
0.98
0.01
0.26
0.73
0.26
0.74
0.17
0.52
0.31
0.31
.0.68
0.01
0.08
0.00
0.92
128
-------
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E. 17.1
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
45013
45013
45014
45014
45014
45014
45014
45014
45015
45015
45015
45015
45015
45015
45015
45016
45016
45016
45016
45017
45017
45017
45018
45018
45018
45019
45019
45019
45019
45020
45020
45020
45020
45020
45021
45021
45021
45021
45021
45022
45022
45022
45023
45023
45023
45023
45023
45023
45023
45024
45024
45024
45024
45025
45025
45026
45026
45026
45027
45027
45027
45033
45033
45034
45034
45035
930
940
N/A
N/A
560
580
930
980
N/A
N/A
580
920
980
990
N/A
N/A
920
990
N/A
840
990
N/A
400
840
N/A
400
830
840
890
N/A
390
400
820
830
N/A
380
390
400
820
N/A
380
810
N/A
370
380
450
800
810
850
N/A
450
800
850
N/A
450
N/A
120
450
N/A
120
720
N/A
30
N/A
30
N/A
0.10
0.20
0.01
0.14
0.33
0.31
0.20
0.01
0.43
0.22
0.03
0.01
0.31
0.01
0.69
0.06
0.13
0.12
0.75
0.23
0.01
0.34
0.02
0.65
0.51
0.04
0.42
0.02
0
0.28
0.40
0.01
0.04
0.26
0.21
0.64
0.13
0.00
0.02
0.06
0.73
0.28
0.50
0.07
0.00
0.01
0.04
0.29
0.10
0.10
0.75
0.15
0.00
0.17
0.83
0.59
0.19
0.23
0.73
0.01
0.26
.0.52
0.48
0.24
0.76
0.24
37015
37015
37016
37017
45036
45036
45037
45037
45038
45038
45039
45039
45040
45041
45042
45042
46008
46008
46008
46008
46008
46009
46009
46009
46009
46009
46010
46010
46010
46010
46010
46011
46011
46011
46011
46011
46012
46012
46013
46013
46013
46013
46013
46014
46014
46014
46014
46015
46015
46015
46015
46016
46016
46016
46016
46017
46017
46018
46018
46018
46019
46019
46019
46019
46019
46020
260
280
230
230
20
30
N/A
20
N/A
20
N/A
20
20
20
N/A
20
N/A
N/A
620
630
960
N/A
N/A
620
630
960
N/A
N/A
600
950
960
N/A
N/A
590
940
950
N/A
940
N/A
N/A
560
930
940
N/A
580
930
980
N/A
N/A
430
980
N/A
420
430
840
N/A
840
N/A
400
840
N/A
400
410
830
840
N/A
0.09
0.06
1.00
1.00
0.21
0.39
0.74
0.26
0.82
0.18
0.01
0.99
1.00
1.00
0.23
0.77
0.78
0.00
0.02
0.00
0.19
0.00
0.21
0.18
0.18
0.43
0.38
0.16
0.10
0.31
0.05
0.00
0.93
0
0.01
0.06
0.71
0.29
0.94
0.04
0.01
0.01
0.01
0.99
0.01
0.00
0.00
0.00
0.92
0.07
0.01
0.90
0.00
0.05
0.05
0.43
, 0.57
0.03
0.06
0.91
0.08
0.72
0.08
0.05
0.07
0.01
38016
38016
38017
38017
46021
46021
46022
46022
46022
46022
46022
46022
46023
46023
46023
46023
46023
46023
46024
46024
46024
46024
46024
46025
46025
46033
46033
46034
46034
46039
46039
46040
46041
46042
46042
47008
47000
47008
47009
47009
47009
47009
47010
47010
47010
47011
47011
47011
47012
47012
47012
47013
47013
47014
47014
47014
47015
47015
47015
47016
47016
47016
47017
47017
47017
47017
230
250
230
550
400
770
N/A
N/A
380
400
770
810
N/A
N/A
370
380
800
510
N/A
N/A
370
450
500
14/A
450
N/A
30
N/A
30
N/A
20
20
20
N/A
20
N/A
N/A
960
4/A
N/A
N/A
960
N/A
N/A
960
N/A
N/A
440
N/A
N/A
440
N/A
440
N/A
430
440
N/A
430
440
N/A
41&0
430
N/A
410
420
430
1.00
0.00
0.99
0.01
0.73
0.16
0.00
0.01
0.89
0.02
0.07
0.01
0.26
0.02
0.26
0.12
0.01
0.33
0.56
0.03
0.03
0.10
0.28
0.98
0.02
0.98
0.02
1.00
0.00
0.37
0.63
1.00
1.00
0.19
0.81
0
0.98
0.02
0.00
0.02
0.33
0.64
0.84
0.09
0.07
0.15
0.76
0.09
0.12
0.60
0.29
0.69
0.31
0.90
0.01
0.09
0.86
0.14
0.00
0.43
0.02
0.55
0.18
0.20
0.54
0.05
129
-------
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E.17.1
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
45035
45036
43016
43016
43017
43017
43017
43017
43018
43018
43018
43018
43019
43019
43019
43019
43020
43020
43020
43020
43020
43020
43021
43021
43021
43021
43021
43021
43021
43022
43022
43022
43022
43022
43023
43023
43023
43024
43024
43024
43025
43025
43025
43025
43026
43026
43026
43027
43027
43027
43027
43028
43028
43029
43029
43029
43030
43030
43030
43031
43031
43032
43033
43033
43034
43035
30
N/A
920
980
N/A
N/A
500
920
N/A
500
880
920
N/A
N/A
500
880
N/A
340
500
510
870
880
N/A
340
490
510
860
870
880
N/A
470
480
490
860
450
470
480
140
450
470
120
140
710
720
120
710
720
N/A
110
710
720
N/A
110
720
N/A
110
N/A
40
80
N/A
40
40
30
40
30
30
0.76
0.39
0.26
0.15
0.05
0.04
0.23
0.68
0.06
0.78
0.03
0.13
0.01
0.02
0.77
0.20
0..06
0.12
0.28
0.05
0.00
0.49
0.16
0.02
0.44
0.21
0,01
0.14
0.01
0.12
0.14
0.16
0.06
0.52
0.17
0.83
0
0.33
0.61
0.06
0.40
0.44
0.13
0.03
0.05
0.29
0.67
0.03
0.13
0.26
0.58
0.49
0.51
0.00
0.49
0.51
0.52
0.19
0.30
0.00
1.00
1.00
0.28
0.72
1.00
1.00
46020
46020
46020
46020
46021
46021
43039
43040
43041
43041
43042
43042
44008
44008
44009
44009
44009
44010
44010
44010
44011
44011
44011
44011
44012
44012
44012
44012
44013
44013
44013
44013
44013
44014
44014
44014
44014
44014
44015
44015
44015
44015
44016
44016
44016
44016
44017
44017
44017
44017
44017
44017
44018
44018
44018
44019
44019
44019
44019
44019
44020
44020
44020
44020
44020
44020
390
400
410
830
380
390
20
20
N/A
20
N/A
20
N/A
620
N/A
600
620
N/A
N/A
600
N/A
N/A
590
600
N/A
590
600
940
N/A
N/A
560
590
940
N/A
560
580
940
980
N/A
560
580
980
N/A
920
980
990
N/A
N/A
500
880
920
990
N/A
N/A
500
880
N/A
830
880
890
N/A
390
510
0.82
830
870
0.02
0.93
0.02
0.01
0.10
0.00
1.00
1.00
0.09
0.92
0.81
0.19
0.92
0.08
0.89
0.03
0.08
0.09
0.42
0.49
0.04
0.17
0.26
0.52
0.15
0.76
0.02
0.07
0.00
0.10
0.29
0.18
0.43
0.19
0.73
0.05
0.01
0.01
0.17
0.20
0.00
0.62
0.43
0.50
0.06
0.01
0.16
0.10
0.45
0.07
0.17
0.04
0.70
0.00
0.11
0.19
0.88
0.06
0.06
0.00
0.71
0.00
0.00
0.18
0.01
0.04
47017
47018
47018
47018
47018
47019
44022
44022
44022
44022
44022
44022
44023
44023
44023
44023
44024
44024
44025
44025
44025
44026
44026
44026
44027
44027
44027
44028
44028
44030
44030
44031
44031
44032
44032
44033
44033
44033
44034
44035
44036
44036
44037
44037
44038
44038
44039
44040
44041
44042
44042
45008
45008
45008
45009
45009
45009
45010
45010
45010
45010
45011
45011
45011
45011
45011
840
N/A
410
420
840
N/A
N/A
380
470
810
850
860
N/A
450
470
850
140
450
120
140
450
120
450
720
14/A
120
720
N/A
720
N/A
80
N/A
40
N/A
40
N/A
30
40
30
30
20
30
N/A
20
N/A
20
20
20
20
N/A
20
N/A
N/A
620
N/A
600
620
N/A
N/A
600
950
N/A
N/A
N/A
590
600
0.02
0.03
0.81
0.03
0.13
0.01
0.71
0.00
0.09
0.11
0.05
0.04
0.11
0.42
0.10
0.37
0.31
0.69
0.13
0.49
0.38
0.49
0.13
0.38
0.06
0.00
0.94
0.97
0.03
1.00
0.00
0.74
0.26
0.26
0.74
0.06
0.66
0.28
1.00
1.00
0.40
0.60
0.07
0.93
0.04
0.96
1.00
1.00
1.00
0.67
0.33
0.00
0.43
0.57
0.10
0.48
0.43
0.00
0.45
0.42
0.13
0.05
0.20
0.02
0.28
0.19
130
-------
RAOM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E.17.1
RAOM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
43036
43036
43037
43038
41010
41010
41011
41011
41012
41012
41012
41012
41013
41013
41013
41014
41014
41014
41015
41015
41015
41015
41016
41016
41016
41016
41016
41017
41017
41017
41017
41017
41018
41018
41018
41018
41018
41018
41019
41019
41019
41019
41019
41019
41020
41020
41020
41020
41020
41021
41021
41021
41021
41021
41022
41022
41022
41022
41023
41023
41023
41024
41024
41024
41024
41025
20
30
20
20
310
600
N/A
600
N/A
590
600
610
260
590
610
240
260
590
N/A
235
240
560
N/A
N/A
560
920
980
N/A
910
920
970
980
N/A
550
900
910
920
970
N/A .
220
540
890
900
910
N/A
220
540
890
900
220
330
340
540
890
210
330
340
760
210
470
760
110
210
470
760
110
0.43
0.57
1.00
1..00
0.08
0.40
0.02
0.98
0.00
0.04
0.48
0.48
0.17
0.73
0.10
0.75
0.07
0.17
0.01
0.10
0.40
0.49
0.02
0.11
0.50
0.00
0.38
0.30
0.11
0.54
0.03
0.02
0.26
0.10
0.28
0.33
0.01
0.03
0.07
0.01
0.00
0.05
0.82
0.04
0.01
0.36
0.27
0.34
0.03
0.06
0.54
0.14
0.12
0.15
0.04
0.14
0.12
0.71
0.35
0.02
0.63
0.61
0.21
0.17
0.01
1.00
44020
44021
44021
44021
44021
44021
44021
44021
41030
41030
41030
41031
41031
41032
41032
41033
41033
41034
41034
41035
41035
41036
41036
41036
41036
41037
41038
41038
41039
41039
41040
41040
41041
41041
42010
42010
42011
42011
42011
42012
42012
42012
42012
42013
42013
42014
42014
42014
42015
42015
42015
42015
42016
42016
42016
42016
42016
42017
42017
42017
42018
42018
42018
42018
42019
42019
880
N/A
380
490
510
820
860
870
40
70
80
40
70
40
70
40
70
30
70
30
700
10
20
30
700
20
N/A
20
N/A
20
N/A
20
N/A
20
N/A
600
N/A
600
610
N/A
590
600
610
N/A
590
240
560
590
N/A
240
560
980
N/A
N/A
560
920
980
N/A
920
980
N/A
500
910
920
N/A
500
0.06
0.80
0.05
0.02
0.04
0.02
0.00
0.07
0.83
0.01
0.16
0.47
0.53
0.23
0.77
0.09
0.91
0.43
0.57
0.65
0.35
0.09
0.42
0.28
0.20
1.00
0.12
0.88
0.79
0.21
0.58
0.42
0.87
0.13
0.74
0.26
0.12
0.87
0.01
0.00
0.36
0.09
0.55
0.01
0.99
0.19
0.24
0.57
0.07
0.11
0.80
0.02
0.00
0.29
0.09
0.05
0.57
0.19
0.74
0.07
0.01
0.01
0.45
0.54
0.00
0.31
45011
45011
45012
45012
45012
45013
45013
45013
42021
42021
42022
42022
42022
42022
42023
42023
42023
42024
42024
42024
42024
42025
42025
42025
42025
42026
42026
42027
42027
42028
42028
42029
42029
42029
42030
42030
42030
42031
42032
42032
42033
42033
42033
42034
42034
42035
42036
42036
42037
42038
42039
42040
42041
42041
43010
43010
43010
43011
43011
43012
43012
43012
43012
43013
43013
43013
940
950
N/A
590
940
N/A
N/A
560
510
540
340
480
490
760
470
480
760
110
140
450
470
110
120
140
710
110
710
110
710
80
110
N/A
80
110
N/A
40
50
40
40
70
30
40
70
30
70
30
20
30
20
20
20
20
N/A
20
N/A
N/A
600
N/A
600
N/A
N/A
590
600
N/A
590
940
0.15
0.11
0.14
0.06
0.80
0.11
0.28
0.30
0.03
0.03
0.07
0.47
0.17
0.28
0,81
0.11
0.09
0.22
0.03
0.20
0.54
0.61
0.00
0.16
0.22
0.58
0.42
0.86
0.14
0.11
0.89
0.01
0.64
0.36
0.00
0.71
0.29
1.00
1.00
0.00
0.2?
0.48
0.30
0.67
0.33
1.00
0.42
0.58
1.00
1.00
1.00
1.00
0.40
0.60
0.00
0.64
0.36
0.17
0.83
0.05
0.01
0.38
0.55
0.03
0.79
0.18
131
-------
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E. 17.1
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
41026
41027
41027
41028
41028
41029
38018
38018
38019
38019
38019
38020
38020
38020
38021
38021
38021
38022
38022
38023
38023
38023
38024
38024
38025
38025
38026
38026
38026
38027
38027
38028
38029
38029
38030
38030
38031
38032
38033
38034
38034
38035
38035
38036
38037
38038
38038
38039
38039
39009
39009
39009
39010
39010
39010
39011
39011
39011
39011
39012
39012
39012
39013
39013
39014
39014
110
50
110
50
110
80
230
550
220
230
550
180
200
220
180
200
740
180
740
180
730
740
180
730
80
730
80
100
730
80
100
100
80
100
60
80
60
60
60
10
60
10
60
10
10
N/A
10
N/A
10
N/A
300
310
N/A
300
310
290
300
310
600
290
300
600
260
290
240
250
1.00-
0.35
0.65
0.86
0.14
1.00
0. 69
0. 31
0.14
0.11
0.15
0.10
0.23
0.67
0.65
0.35
0.00
0.14
0.26
0.71
0.04
0.26
0.38
0.62
0.56
0.44
0.82
0.07
0.10
0.37
0.63
1.00
0.26
0.74
0.26
0.74
1.00
1.00
1.00
0.08
0.92
0.91
0.09
1.00
1.00
0.23
0.77
0.98
0.02
0.80
0.18
0.02
0.00
0.90
0.10
0.01
0.91
0.00
0.08
0.94
0.05
0.01
0.76
0.24
0.00
0.33
42019
42019
42019
42020
42020
42020
42020
42021
42021
42021
39016
39016
39017
39017
39017
39018
39019
39019
39020
39020
39021
39021
39021
39022
39022
39022
39023
39023
39024
39024
39024
39024
39025
39025
39025
39025
39026
39026
39021
39027
39028
39028
39029
39029
39030
39030
39030
39031
39031
39032
39032
39033
39033
39034
39034
39034
39035
39035
39036
39037
39037
39038
39038
39038
40010
40010
540
890
910
N/A
340
500
540
330
340
490
560
980
230
550
980
550
220
550
180
220
180
210
220
150
210
220
180
210
180
210
730
750
80
110
730
750
80
110
80
100
80
100
80
100
60
70
80
60
70
60
70
60
70
10
30
60
10
700
10
N/A
10
N/A
10
20
N/A
300
0.06
0.01
0.62
0.00
0.21
0.26
0.52
0.06
0.63
0.26
0. 01
0. 00
0.62
0.29
0.09
1.00
0.26
0.74
0.04
0.96
0.33
0.16
0.50
0.42
0.56
0.03
0.26
0.74
0.23
0.43
0.10
0.24
0.14
0.61
0.17
0.09
0.76
0.24
0.81
0.19
0.01
0.99
0.65
0.35
0.00
0.35
0.65
0.42
0.58
0.84
0.16
0.86
0.14
0.49
0.04
0.47
0.87
0.13
1.00
0.13
0.87
0.87
0.06
0.05
0.22
0.17
43014
43014
43014
43014
43015
43015
43015
43015
43016
43016
40014
40014
46015
40015
40015
40016
40016
40016
40016
40016
40017
40017
40017
40017
40018
40018
40018
40018
40018
40019
40019
40019
40020
40020
40021
40021
40021
40022
40022
40022
40023
40023
40024
40024
40024
40025
40025
40026
40026
40027
40027
40028
40028
40029
40029
40030
40030
40030
40031
40032
40033
40033
40034
40034
40034
40034
N/A
560
590
940
N/A
N/A
560
980
N/A
560
240
260
235
240
560
N/A
230
235
560
980
N/A
550
970
980
N/A
550
900
970
990
220
550
900
N/A
220
210
220
330
210
330
760
210
750
110
210
750
110
750
50
110
80
110
80
100
50
100
40
70
80
70
70
60
70
10
30
60
70
0.11
0.59
0.05
0.26
0.01
0.07
0.73
0.20
0.56
0.02
0.36
0.64
0.66
0.26
0.08
0.00
0.14
0.03
0.59
0.24
0.02
0.02
0.07
0.90
0.00
0.14
0.01
0.24
0.01
0.28
0.5
0.22
0.00
1.00
0.29
0.69
0.02
0.91
0.05
0.03
1.00
0.00
0.16
0.22
0.61
0.93
0.07
0.24
0.76
0.99
0.01
0.68
0.12
0.97
0.03
0.04
0.33
0.63
1.00
1.00
0.11
0.89
0.00
0.59
0.22
0.19
132
-------
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
Table E.17.1
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
RADM Phase 4 Percent of
Cell WSM Cell in
COLROW Segment Segment
39014
39015
39015
39015
39015
39015
39016
39016
47019
47019
47020
47020
47020
47020
47021
47021
47021
47021
47022
47022
47022
47023
47039
47039
47040
47040
47041
47041
47042
47042
48009
48009
48010
48010
48012
48012
48013
48013
48013
48014
48014
48014
48015
48015
48015
48015
48016
48016
48017
48017
48017
48018
48018
48018
48018
48019
48019
48019
48020
48020
260
230
235
240
250
260
230
235
410
840
N/A
400
410
780
N/A
400
410
770
N/A
380
770
N/A
N/A
20
N/A
20
N/A
20
N/A
20
N/A
960
N/A
960
N/A
440
N/A
N/A
440
N/A
N/A
440
N/A
N/A
430
440
N/A
430
N/A
420
430
N/A
410
420
430
N/A
410
430
N/A
410
0.67
0.00
0.52
0.00
0.28
0.19
0.73
0.26
0.99
0.00
0.01
0.14
0.64
0.22
0.33
0.20
0.16
0.31
0.82
0.04
0.13
1.00
0.98
0.02
0.19
0.81
0.12
0.88
0.76
0.24
0.93
0.07
1.00
0.00
1.00
0.00
0.83
0.00
0.17
D.04
0.46
0.50
0.33
0.08
0.07
0.52
0.01
0.99
0.00
0.24
0.76
0.00
0.33
0.47
0.20
0.10
0.87
0.03
0.44
0.35
40010
40010
40011
48020
48040
48040
40011
40011
40012
40012
40012
40013
40013
40013
40013
48041
48041
49015
49015
49016
49016
49017
49017
49018
49018
49018
49019
49019
310
600
300
780
N/A
20
310
600
290
600
610
260
290
590
610
N/A
20
N/A
430
N/A
430
N/A
430
N/A
410
430
N/A
430
0.60
0.01
0.04
0.21
0.93
0.07
0.17
0.79
0.61
0.27
0.13
0.66
0.06
0.01
0.26
0.97
0.03
1.00
0.00
0.78
0.22
0.36
0.64
0.29
0.00
0.71
0.90
0.10
40035 10 0.04
40035 30 (1.26
40035 700 0.70
40036 10 0.91
40036 20 0.01
40036 700 0.09
40037 10 0.67
40037 20 0.33
40038 N/A 0.44
40038 10 0.02
40038 20 0.54
41010 N/A 0.52
133
-------
Section E.18
Atmospheric Deposition of Nutrients
The Chesapeake Bay Program Air Subcommittee provided the Modeling Subcommittee
with a regression model designed to simulate the daily wet deposition of nitrate and
ammonia. The regression method is based on the basic logarithmic relationship between the
amount of precipitation and the nutrient concentrations in that precipitation. The regression
method uses this relationship in conjunction with daily summations of the Phase IV
Watershed Modeling precipitation data sets, resulting in deposition inputs with the same
temporal and spatial resolution as the precipitation inputs.
The regression relationship was developed using weekly data collected over an eight year
period at fifteen National Air deposition Program (NADP) sites. Due to the weekly sampling
protocol of NADP, the data were quality controlled by selecting those data where the
precipitation event occurred only on the last day of the weekly sample. Using this criteria,
265 samples were selected from the approximately 5000 samples collected at the NADP
sites. These selected data were then treated as daily samples and employed in developing
the regression model.
The regression equations are as follows:
N[NO3] = 0.2222 * EXP (-0.3852 * ln(ppn) - 0.0037 * month2 +
0.0744* latitude-1.289)
N[NH4] = 0.7778 * EXP (-0.3549 * ln(ppn) + 0.3966 * month -
0.0337 * month2 -1.226)
with Ibs/acre = ((mg/1 * ppn) / 100) * 0.89
where N is expressed in mg/1,
ppn is expressed in millimeters
month is expressed as an integer, and
latitude is the precipitation model segment centroid Y component in
decimal degrees.
134
-------
Atmospheric Deposition of Organic N, Organic P, and Phosphate
Constant annual loads applied on a daily basis are employed in the Phase IV. Loading
rates were obtained from the September, 1982 EPA publication Chesapeake Bay Program
Technical Studies: A Synthesis. Annual loading rates are as follows:
P [Organic P] 0.423 Ibs/acre
P [Phosphate] 0.143 Ibs/acre
Measured Annual Wet Deposition of NO3 and NH4
The following table, Table E.I9.1, lists observed measurements of wetfall ammonia as
reported by the National Air Deposition Program (NADP) for twelve sites in and around the
Chesapeake Bay Watershed. The tables were obtained from an article by Valigura, et. al.
entitled "Atmospheric Deposition of Nitrogen and Contaminants to the Chesapeake Bay and
it's Watershed" in the 1994 Chesapeake Research Consortium publication Perspectives on
the Chesapeake Bay : Advances in Estuarine Sciences.
135
-------
Table E. 18.1
Annual wet deposition of NO3 at NADP sites in Kg N / Ha yea
NADPSite 1985 1986 1987 1988 1989 1990 1991
White Rock, MD
Wye, MD
Lewiston, NC
Finely Farms, NC
Chautauqau, NY
Jasper, NY
Penn State, PA
Leading Ridge, PA
Milford, PA
Charlottesville, VA
Babcock State Park, WV
Parsons, WV
Annual wet deposition
NADP Site
White Rock, MD
Wye, MD
Lewiston, NC
Finely Fauns, NC
Chautauqau, NY
Jasper, NY
Penn State, PA
Leading Ridge, PA
Milford, PA
Charlottesville, VA
Babcock State Park, WV
2.97
2.95
1.97
2.04
5.80
2.41
3.94
4.29
4.40
3.76
3.40
5.49
3.67
3.10
2.30
5.94
.3.10
4.19
5.48
3.33
3.93
6.25
of NH4 at
1985
1.36
1.59
1.27
1.42
3.41
1.36
1.81
2.05
2.19
1.79
1.58
1986
1.87
1.68
1.37
4.18
1.42
1.68
2.54
1.76
2.00
3.66
2.50
2.45
2.53
3.89
3.00
4.52
5.48
4.54
3.53
3.09
4.07
NADP
1987
1.98
1.36
1.63
2.00
2.15
1.68
1.99
2.57
1.56
1.63
1.78
3.92
2.61
2.62
2.97
4.32
2.85
3.25
4.04
4.14
2.97
2.09
3.88
sites
1988
1.71
1.18
0.81
1.49
2.42
1.30
1.41
1.77
i.n'
1.09
0.86
4.44
4.31
2.85
3.75
4.07
3.03
4.17
5.39
4.55
3.97
5.27
in Kg
1989
2.69
2.65
1.72
4.36
2.43
2.01
2.54
3.04
1.77
2.12
3.85
3.52
2.31
2.28
4.76
3.01
4.52
5.30
5.07
3.61
3.14
4.26
N / Ha
1990
2.24
2.14
1.87
2.57
2.89
1.73
2.33
2.87
2.31
2.47
1.98
3.10
3.37
2.30
2.22
3.57
2.31
3.91
3,99
3.61
3.28
2.83
3.97
yea
1991
1.76
2.05
1.44
2.56
2.00
1.16
1.91
1.98
1.59
1.86
1.18
Parsons, WV 2.64 3.02 2.15 1.40 2.89 2.22 1.7
136
-------
Section E.19
Clean Air Act (CAA), Ozone Transport Commission (OTC), and 2005 Limit of
Technology (LOT) Reduction in Nitrogen Deposition to the Chesapeake Bay Watershed
The RADM and Watershed models have incompatible simulation periods. Accordingly,
when RADM loads are used in the Watershed Model, the loads are generated on a
proportional basis. That is, a nitrate reduction scenario is run on RADM and the proportional
difference between the RADM base load and the RADM nitrate reduction scenario load is
calculated for each RADM cell. The proportional reduction of RADM nitrate is transferred
to the model segments and the Watershed model is run with a proportional reduction of the
Watershed Model base atmospheric deposition nitrate.
Nitrate (wet and dry) loads under Base, Clean Air Act (CAA), and Ozone Transport
Commission Scenarios (OTC) are tabulated for each model segment as a proportion of the
Watershed Model Reference Scenario nitrate wet and dry deposition loads. Full
documentation of the RADM scenarios can be obtained through the CBP Air Subcommittee
(in preparation).
137
-------
Table E. 19.1
High Resolution RADM Annual Total Nitrogen Deposition
Averaged Over Watershed Model Segments (CAA)
SEG = Chesapeake Bay Watershed Model Segment
BASE = 1990 base nitrogen deposition (kg-N/Ha)
FUTURE = Base 2005 with Clean Air Act Reductions
nitrogen deposition (Kg-N/Ha)
% REDUCTION = % reduction of Base 2005 from 1990 Base Case
SEG
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
480
BASE
8.6394
8.9075
10.1496
11.6970
14.4462
1 1 .4894
10.8146
11.9392
12.2347
12.4837
13.0655
13.5781
14.4260
12.9042
11.3967
11.4302
11.2388
10.5253
10.3047
11.9831
11.0189
10.5425
11.2617
11.7043
10.8374
1 1 .3365
11.9572
11.5197
10.4528
12.1576
10.7830
11.4924
13.1264
14.8086
11.3803
11.7833
11.2679
12.8482
13.0736
11.7763
11.4916
7.1406
13.2028
13.7257
14.5038
FUTURE
7.2707
7.5346
8.5548
9.7914
12.0099
9.6379
9.0493
9.9753
10.2268
10.3984
10.9435
11.5400
12.2491
10.9373
9.7684
9.7981
9.5525
9.2852
8.9442
10.2085
9.5194
9.2280
9.9652
10.4555
9.6484
10.2018
10.5346
10.3682
9.4731
11.0916
9.9059
10.6162
11.3469
12.8187
9.8075
10.1498
9.7597
11.2323
11.6017
10.5751
10.3307
6.5385
11.3078
1 1 .8005
12.5137
CAA%
REDUCTION
15.8425
15.4129
15.7129
16.2914
16.8646
16.1149
16.3233
16.4492
16.4115
16.7042
16.2412
15.0102
15.0901
15.2423
14.2875
14.2788
15.0043
11.7821
13.2027
14.8092
13.6084
12.4686
11.5125
10.6696
10.9713
10.0093
11.8974
9.9959
9.3726
8.7682
8.1341
7.6242
13.5566
13.4375
13.8204
13.8628
13.3849
12.5769
11.2586
10.2001
10.1022
8.4321
14.3530
14.0262
13.7212
SEG
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
BASE
14.6580
14.2174
14.9586
14.9725
11.6146
11.3585
11.4298
11.6050
12.1910
12.7593
12.0396
10.8386
12.7105
8.4971
14.4663
13.0908
11.9770
11.5593
12.1656
12.7105
12.7782
13.8923
12.8890
11.1970
9.2165
11.7741
10.8606
11.6137
13.7649
11.8435
13.5753
13.8657
13.2591
14.0835
12.1700
11.0947
10.5613
10.8306
10.9954
11.9968
11.2279
9.3139
FUTURE
12.7256
12.3964
13.0329
12.9635
10.0863
10.1463
10.2985
10.6272
11.3328
11.6987
11.3586
10.2336
10.9363
7.1285
12.1326
11.0552
10.1557
9.8948
10.2435
10.9363
11.1795
12.2103
11.1039
9.6151
7.9994
10.3160
9.7186
9.9357
11.9281
10.3239
11.8593
12.0163
11.5510
12.2160
10.7113
10.0624
9.6978
10.2180
10.3440
10.4783
9.9562
8.4507
CAA%
REDUCTION
13.1832
12.8082
12.8735
13.4179
13.1584
10.6722
9.8978
8.4257
7.0396
8.3124
5.6563
5.5819
13.9585
16.1067
16.1320
15.5499
15.2066
14.3997
15.7995
13.9585
12.5112
12.1074
13.8498
14.1279
13.2057
12.3840
10.5151
14.4485
13.3441
12.8307
12.6406
13.3379
12.8825
13.2602
11.9860
9.3044
8.1761
5.6562
5.9243
12.6575
11.3262
9.2679
138
-------
Table E. 19.2
High Resolution RADM Annual Total Nitrogen Deposition
Averaged Over Watershed Model Segments (OTC)
SEG = Chesapeake Bay Watershed Model Segment
BASE = 1990 base nitrogen deposition (kg-N/Ha)
FUTURE = 2005 with Stringent NOx Reductions in OTC Region
nitrogen deposition (Kg-N/Ha)
% REDUCTION = % reduction of Base 2005 with Stringent NOx Reductions
from 1990 Base Case
SEG
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
330
340
370
380
390
400
410
420
430
440
450
470
BASE
8.6394
8.9075
10.1496
11.6970
14.4462
11.4894
10.8146
11.9392
12.2347
12.4837
13.0655
13.5781
14.4260
12.9042
11.3967
11.4302
11.2388
10.5253
10.3047
11.9831
11.0189
10.5425
11.2617
1 1 .7043
10.8374
11.3365
1 1 .9572
11.5197
10.4528
12.1576
10.7830
11.4924
13.1264
14.8086
11.3803
11.7833
11.2679
12.8482
13.0736
11.7763
11.4916
7.1406
13.2028
13.7257
FUTURE
6.6134
6.7948
7.5974
8.4891
10.5306
8.6100
7.8943
8.6946
9.1573
9.1191
9.4514
10.0715
10.6826
10.1930
9.2515
9.1515
8.6558
8.8146
8.4201
9.1294
8.6399
8.5517
9.0220
9.5426
8.9138
9.4627
10.0880
9.9758
8.9943
10.4100
9.3840
10.0650
10.1345
1 1 .4293
8.6688
8.9791
8.6386
10.0106
10.4210
9.6262
9.4186
6.0922
9.9884
10.5306
OTC %
REDUCTION
23.4507
23.7182
25.1458
27.4250
27.1047
25.0614
27.0033
27.1760
25.1530
26.9519
27.6614
25.8254
25.9490
21.0102
18.8230
19.9358
22.9829
16.2532
18.2887
23.8144
21.5902
18.8836
19.8878
18.4693
17.7496
16.5289
15.6324
13.4023
13.9532
14.3745
12.9741
12.4204
22.7930
22.8198
23.8263
23.7981
23.3344
22.0856
20.2897
18.2579
18.0393
14.6822
24.3464
23.2782
SEG
480
490
500
510
540
550
560
580
590
600
610
620
630
650
700
710
720
730
740
750
760
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
BASE
14.5038
14.6580
14.2174
14.9586
14.9725
11.6146
11.3585
11.4298
11.6050
12.1910
12.7593
12.0396
10.8386
12.7105
8.4971
14.4663
13.0908
11.9770
11.5593
12.1656
12.7105
12.7782
13.8923
12.8890
11.1970
9.2165
11.7741
10.8606
11.6137
13.7649
11.8435
13.5753
13.8657
13.2591
14.0835
12.1700
11.0947
10.5613
10.8306
10.9954
11.9968
11.2279
9.3139
FUTURE
11.1963
11.3348
10.9845
11.5830
11.5756
9.1342
9.2123
9.3617
9.9285
10.7717
11.0391
10.8812
9.8381
9.7893
6.3671
10.2941
9.5668
9.1868
9.1421
9.0668
9.7893
9.9518
10.8949
9.8078
8.5144
7.1139
9.2484
8.8608
8.8290
10.6981
9.1833
10.5727
10.7617
10.3695
10.8070
9.5499
9.2044
9.0254
9.7855
9.9081
9.4216
9.0027
7.8342
OTC %
REDUCTION
22.8044
22.6716
22.7390
22.5663
22.6876
21.3559
18.8951
18.0939
14.4464
11.6422
13.4819
9.6216
9.2309
22.9826
25.0674
28.8408
26.9197
23.2963
20.9113
25.4718
22.9826
22.1189
21.5760
23.9057
23.9582
22.8134
21.4513
18.4133
23.9777
22.2799
22.4613
22.1181
22.3862
21.7933
23.2648
21.5292
17.0379
14.5427
9.6495
9.8887
21.4657
19.8185
15.8870
139
-------
Table E.19.3
High Resolution RADM Annual Total Nitrogen Depostition
2005 Limit of Technology (Version 2): Mobile + Utility = Reduction
Deposition in KG-N/HA, Percent Reduction from 1990 BEIS2 = Base20
Base Wet Future Wet %Wet
Segment N Deposit. N Deposit. Reduction
Base Dry Future Dry % Dry
N Dep. N Dep. Reduction
Base Total Future Total % LOT Total
N deposition N Deposition Reduction
10
20
30
40
50
60
70
80
90
100
110
120
140
160
170
175
180
190
200
210
220
230
235
240
250
260
265
270
280
290
300
310
4.2272
4.4600
4.9359
5.3648
7.0032
5.0904
5.0024
5.7061
5.5548
5.7797
6.4764
6.2603
6.6956
6.1022
5.3586
5.2927
6.0866
5.5540
5.1302
5.8590
4.6643
4.9102
4.1096
4.3765
4.5333
4.6262
6.0059
5.6688
4.5092
5.2569
4.3898
4.6931
1.9203
2.1531
2.3752
2.4846
2.4796
2.1651
2.2434
2.3075
1.9617
2.1385
2.6117
3.0309
3.1388
2.2393
2.1597
2.2761
2.4085
2.5949
2.2630
2.4739
2.0809
2.1218
2.0104
2.2356
2.1794
2.3867
2.9423
2.9521
2.2536
2.8657
2.4272
2.6213
54.5733
51.7437
51.9462
53.7261
64.4826
57.2242
54.9986
59.4131
64.5638
62.9242
59.5076
50.9680
52.3833
63.0955
59.6126
57.0657
60.3079
53.3869
56.1047
57.5538
55.1108
56.7080
• 51.0607
48.9486
51.8202
48.5137
50.9342
47.7479
49.9399
45.5037
44.7756
44.1278
4.7235
4.7169
5.3072
6.2818
7.6642
6.6115
5.8646
6.1117
6.6691
6.6838
6.3322
7.2735
7.5727
6.6519
5.8125
5.9555
4.9028
4.5966
4.8815
5.8645
6.1042
5.2590
6.7682
6.9487
5.8901
6.3140
5.6575
5.4566
5.5266
6.4745
5.9405
6.3378
2.1431
2.2878
2.3890
2.6196
2.8903
2.7746
2.4370
2.5389
2.4378
2.5968
2.7874
3.4781
3.6288
2.2880
2.1373
2.2657
2.1299
2.0353
2.0687
2.7017
2.9517
2.3938
3.1595
3.3782
2.7641
3.0561
2.2521
2.4405
2.6699
3.2264
2.9215
3.3097
54.6074
51.4271
55.0460
58.5128
62.2471
58.0139
58.5642
58.4989
63.4143
61.0611
56.0035
52.3071
52.1276
65.5496
63.1846
61.9112
56.5708
55.6825
57.5708
54.0020
52.0740
54.5328
53.3140
51.3882
53.0875
51.6569
60.2051
55.2682
51.7231
50.2622
50.8283
47.8124
8.9507
9.1769
10.2431
11.6466
14.6673
11.7019
10.8670
11.8178
12.2238
12.4635
12.8086
13.5339
14.2683
12.7541
11.1710
11.2482
10.9893
10.1506
10.0117
11.7235
10.7685
10.1692
10.8777
11.3251
10.4233
10.9401
11.6633
11.1254
10.0358
11.7314
10.3303
11.0308
4.0634
4.4409
4.7642
5.1042
5.3699
4.9397
4.6804
4.8464
4.3996
4.7353
5.3991
6.5091
6.7677
4.5273
4.2970
4.5418
4.5384
4.6302
4.3317
5.1756
5.0326
4.5155
5.1699
5.6138
4.9435
5.4428
5.1944
5.3927
4.9235
6.0920
5.3486
5.9309
54.6015
51.5979
53.5464
56.2964
63.3125
57.6901
56.9445
58.9963
63.9397
61.9383
57.8422
51.8191
52.4484
64.3889
61 .4753
59.6198
58.6225
54.3856
56.7573
55.8281
53.5234
55.6279
52.4704
50.4462
52.5862
50.3254
55.4585
51.5064
50.9592
48.1161
48.2639
46.2433
140
-------
Table E.19.3
High Resolution RADM Annual Total Nitrogen Depostition
2005 Limit of Technology (Version 2): Mobile + Utility = Reduction
Deposition in KG-N/HA, Percent Reduction from 1990 BEIS2 = Base20
Base Wet Future Wet %Wet
Segment N Deposit. N Deposit. Reduction
Base Dry Future Dry % Dry
N Dep. N Dep. Reduction
Base Total Future Total % LOT Total
N deposition N Deposition Reduction
330
340
370
380
390
400
410
420
430
440
450
470
480
490
500
510
540
550
560
580
890
600
610
620
630
700
610
720
730
740
750
760
5.3411
5.1724
5.1048
5.2910
6.3570
6.5488
6.3399
5.4509
5.2847
3.6616
5.5015
5.8628
5.4236
5.1909
6.2504
5.3227
4.8784
4.3879
4.8507
5.8401
4.6074
4.9956
4.9095
5.2377
5.0768
4.3059
7.5942
6.2709
6.2858
5.8832
5.9963
5.1108
2.7096
2.6592
2.5757
2.6310
3.0963
3.3841
3.5428
3.1747
3.1011
2.1889
2.7874
2.9878
2.7982
2.7030
3.1469
2.7691
2.4908
2.0149
2.5548
3.2519
2.5521
2.8408
2.6698
3.2460
3.1654
1.9863
3.1379
2.9443
2.6622
2.5604
2.3018
2.5941
49.2467
48.5700
49.4750
50.2644
51.2236
48.4293
44.0077
41.7516
41.2865
40.1694
49.0952
48.9880
48.4230
47.9314
49.8828
47.9183
48.9466
54.0087
47.4919
44.6896
44.6957
43.2083
45.6126
38.0342
37.6492
53.8619
58.4583
52.7602
57.5027
56.6079
61.5662
49.2195
7.6271
9.4897
6.2847
6.5005
4.8930
6.3166
6.7124
6.2642
6.1464
3.4042
7.6968
7.8178
9.0109
9.3830
7.8418
9.5600
9.9229
6.8983
6.2677
5.4917
6.6180
6.8021
7.3659
6.6474
5.6795
4.3829
6.6063
6.7871
5.5587
5.4872
5.9101
7.5187
3.8158
4.8400
3.1461
3.1822
2.4463
3.1947
3.4294
3.2601
3.1949
1.8048
3.7670
3.8499
4.6092
4.8813
3.9138
5.0100
5.0801
3.2961
3.1135
2.8601
3.5047
3.8352
3.9524
3.9617
3.4712
1.9077
2.9774
3.1505
2.2656
2.2184
2.6089
3.6774
50.0506
49.0639
50.0189
51.0786
49.9954
49.3745
48.8310
47.9053
47.9977
46.781 1
51.1060
50.9286
48.8422
47.9763
50.1729
47.5889
48.8062
52.4442
50.1958
47.9384
46.8520
43.5661
46.3916
40.6304
38.8822
56.4774
54.9811
53.6115
59.2444
59.4333
55.8371
51.2195
12.9681
14.6621
11.3895
11.7915
11.2500
12.8653
13.0523
11.7151
11.4311
7.0657
13.1984
13.6806
14.4344
14.5739
14.0921
14.8826
14.8013
11.2862
11.1183
11.3318
11.2254
1 1 .7977
12.2754
11.8851
10.7563
8.6888
14.2006
13.0580
11.8446
11.6704
11.9064
12.6295
6.5254
7.4992
5.7218
5.8132
5.5426
6.5789
6.9723
6.4348
6.2960
3.9937
6.5544
6.8377
7.4073
7.5843
7.0607
7.7791
7.5710
5.3110
5.6683
6.1120
6.0569
6.6760
6.6222
7.2076
6.6366
3.8940
6.1153
6.0948
4.9278
4.7789
4.9107
6.2716
49.7446
48.8791
49.7695
50.6938
50.7285
48.8795
46.5276
45.0474
44.8036
43.3318
50.3149
50.1211
48.6756
47.9780
49.7921
47.7142
48.8375
53.1062
49.0138
46.0373
45.9874
43.3935
46.0477
39.3439
38.3002
55.1781
56.8907
53.2703
58.3489
57.9862
58.7204
50.4011
141
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Table E. 19.3
High Resolution RADM Annual Total Nitrogen Depostition
2005 Limit of Technology (Version 2): Mobile + Utility = Reduction
Deposition in KG-N/HA, Percent Reduction from 1990 BEIS2 = Base20
Base Wet Future Wet % Wet
Segment N Deposit. N Deposit. Reduction
Base Dry Future Dry % Dry
N Dep. N Dep. Reduction
Base Total Future Total % LOT Total
N deposition N Deposition Reduction
770
780
800
810
820
830
840
850
860
870
880
890
900
910
920
930
940
950
960
970
980
990
5.4787
6.7504
5.3859
5.5503
6.3208
7.5781
6.6205
5.8702
5.6920
5.3498
6.5922
4.8765
4.1970
4.7372
5.9968
5.9083
4.7685
5.6745
5.0049
4.2341
5.3754
6.5555
2.9116
3.6655
2.7469
2.7575
3.0585
3.9348
3.6825
2.9324
2.9634
2.7170
3.3644
2.5146
2.1205
2.3010
3.0878
3.3184
2.7343
3.4275
3.1376
2.1133
2.8171
3.7841
46.9070
45.5573
48.9650
50.2472
51.5754
48.3584
44.3785
50.0186
47.9080
49.1208
49.1842
48.4326
49.4381
51.3740
48.8333
43.8474
42.4541
39.6450
37.1725
50.1749
47.8689
42.1661
7.2935
7.1484
7.5040
5.6574
2.8760
4.2159
4.2145
5.7617
8.0749
6.4467
6.8982
8.8387
8.8564
9.1180
6.0286
5.0833
5.5588
5.0022
5.9050
7.4673
5.6663
2.6827
3.6745
3.6106
3.8116
2.7560
1.4669
2.1467
2.2003
2.7589
4.2305
3.3897
3.5162
4.5576
4.5598
4.5330
2.9030
2.6786
3.0009
3.0158
3.5584
3.6207
2.7436
1.3496
49.6095
49.4900
49.2386
51.3221
48.6853
49.0308
47.9489
52.1322
47.8144
47.7640
49.1421
48.4884
48.5841
50.3873
51.6488
47.2057
45.8420
39.9449 -
39.8680
51.5547
51.3796
49.5758
12.7722
13.8988
12.8899
11.2077
9.1968
11.7940
10.8350
11.6319
13.7669
11.7964
13.4904
13.7152
13.0535
13.8553
12.0254
10.9916
10.3273
10.6766
10.9098
11.7014
11.0417
9.2382
6.5860
7.2760
6.5585
5.5136
4.5254
6.0815
5.8828
5.6914
7.1940
6.1067
6.8805
7.0722
6.6804
6.8341
5.9908
5.9970
5.7353
6.4433
6.6961
5.7340
5.5608
5.1337
48.4358
47.6390
49.1206
50.7934
50.7897
48.5355
45.6422
51.0789
47.8189
48.6612
48.9144
48.4438
48.8429
50.6504
49.9467
45.3950
44.2858
39.7689
38.6276
50.9954
49.6024
44.2183
142
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Chesapeake Bay Program
U.S. Environmental Protection Agency
Chesapeake Bay Program Office
410 Severn Avenue, Suite 109
Annapolis, MD 21403
1-800-YOUR BAY
www. epa. gov/chesapeake
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