20220831 14002700 FALSE 20220211 13362200 20220211 13362200 WQ.tif 002 -9154165.000000 -8095092.180000 4257025.000000 5446489.320000 1 Projected GCS_WGS_1984 Linear Unit: Meter (1.000000) WGS_1984_Web_Mercator_Auxiliary_Sphere <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/2.9.0'><WKT>PROJCS[&quot;WGS_1984_Web_Mercator_Auxiliary_Sphere&quot;,GEOGCS[&quot;GCS_WGS_1984&quot;,DATUM[&quot;D_WGS_1984&quot;,SPHEROID[&quot;WGS_1984&quot;,6378137.0,298.257223563]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Mercator_Auxiliary_Sphere&quot;],PARAMETER[&quot;False_Easting&quot;,0.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,0.0],PARAMETER[&quot;Standard_Parallel_1&quot;,0.0],PARAMETER[&quot;Auxiliary_Sphere_Type&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>148923141.92838538</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem> 8 FALSE LZW 1 TIFF TRUE discrete signed integer -128 ESRI ArcCatalog 8.3.0.800 en Grid of the Chesapeake Bay Watershed with cell values representing relative value for the maintenance of water quality. Assistance in prioritizing land for conservation in terms of value to the maintanence of water quality. Chesapeake Bay Program Unpublished Material wq raster digital data withheld ground condition 1990 1997 Complete Irregular -81.009731 -74.577117 43.003228 36.551227 8860.836914 534467.136914 4059116.445209 4761173.665209 None land conservation water quality resource lands assessment Chesapeake Bay Watershed Output datasets have no constraints. Some input datasets are not available for distribution. None Raster Dataset Chesapeake Bay Program 410-267-9835 Andrew Fitch UMCES - Chesapeake Bay Program GIS Applications Developer mailing and physical address

410 Severn Ave., Suite 109

Annapolis MD 21403 USA 410-267-5777 afitch@chesapeakebay.net Esri ArcGIS 12.9.0.32739 WQ.tif 8860.836914 534467.136914 4761173.665209 4059116.445209 1 -81.009731 -74.577117 43.003228 36.551227 1 1 -82.233263 -72.719450 43.877401 35.682527 en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time mailing and physical address Annapolis MD 21403

410 Severn Ave., Suite 109

USA 410-267-9835 Andrew Fitch UMCES - Chesapeake Bay Program GIS Applications Developer 410-267-5777 afitch@chesapeakebay.net 20040706 None None ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset Downloadable Data 91.482 91.482 002 withheld Local Area Network 91.482 Raster Dataset Raster Dataset Raster Grid Cell 19114 14310 36.730000 36.730000 8 1 Upper Left FALSE Default 1 matrix values FALSE ESRI GRID Meters Meters GCS_North_American_1983 NAD_1983_UTM_Zone_18N row and column meters 36.730000 36.730000 North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 NAD_1983_UTM_Zone_18N EPSG 6.18.3(9.3.1.2) 2 14310 36.73 19114 36.73 1 2 1 0 -9154165.000000 4257025.000000 -9154165.000000 5446489.320000 -8095092.180000 5446489.320000 -8095092.180000 4257025.000000 -8624628.590000 4851757.160000 28834 36.730000 32384 36.730000 WQ.tif.vat Table 99 OID OID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Value VALUE Integer 10 10 0 Count COUNT Integer 10 10 0 20220211 250000 STATSGO Erodibility of Soils (K Factor) US Department of Agriculture, Natural Resources Conservation Service 1994 vector digital data Fort Worth, TX US Department of Agriculture, Natural Resources Conservation Service http://www.ncgc.nrcs.usda.gov/branch/ssb/products/statsgo 1994 publication date 1 km Net Primary Productivity US Department of Agriculture, US Forest Service US Department of Agriculture, US Forest Service NPP 24000 DEM Slope US Geological Survey raster digital data Reston, VA US Geological Survey http://edc.usgs.gov/products/elevation/dem.html unknown ground condition 20000 - 62500 NWI Wetland Function US Fish and Wildlife Service 1981 - Present vector digital data St. Petersburg, FL US Fish and Wildlife Service http://nwi.fws.gov/ 1971 1997 ground condition 100000 CBP Forest Patch Size Forest Fragmentation - Patch Size Chesapeake Bay Program 1999 vector digital data Annapolis, MD Chesapeake Bay Program Derived from 1992 MRLC 1990 ground condition FEMA Q3 100 Year Flood Plains Federal Emergency Management Agency Unknown vector digital data Washington, DC Federal Emergency Managment Agency http://www.msc.fema.gov/q3flooda.shtml 24000 unknown ground condition 250000 HGMR Hydrogeomorphic Regions Brakebill, J.W. (ed) 2000 vector digital data Baltimore, MD US Geological Survey http://water.usgs.gov/lookup/getspatial?hgmr Kelley, S.K. (ed) 2000 ground condition 100000 MRLC Percent Forested Percent Impervious USGS EROS Data Center 1997 raster digital data Souix Falls, SD US Geological Survey Covers only Chesapeake Bay watershed; created specifically for Chesapeake Bay Program. 1995 1996 ground condition 100000 DU Water Quality Rankings Ducks Unlimited 2003 Ducks Unlimited derived in part from USGS SPARROW model data - http://md.water.usgs.gov/gis/chesbay/SPARROW.htm ground condition 100000 Surface Water Intakes Municipal Surface Water Supplies - Intakes and Population Served USGS 2003 spreadsheet Contains a list of municipal surface water intakes in the Chesapeake Bay Watershed, with 11-digit watershed and population served by the supplier operating each intake. withheld 2002 Proximity to Water. NHD and CBP medium resolution water body coverages were converted to ESRI Grids. A Chesapeake Bay watershed boundary polygon coverage was converted to an ESRI Grid. Grid EUCDISTANCE function was used to assign distance values in meters, using the NHD/Water Bodies combination as the source grid, and the watershed grid as the output location for distance values. These values were then divided into the following classes and assigned a score (noted in parentheses): 0 - 90m (4) 90 - 180m (3) 180 - 270m (2) > 270m (1) The resulting grid was then multiplied by a weight of 5. ESRI GRID 8.3 withheld withheld Erodibility of Soils. STATSGO KFactor (KFact column in Layer table) data was downloaded and attached to STATSGO map unit coverage, which was clipped to the Chesapeake Bay watershed boundary. This coverage was then converted to a grid. The grid was reclassed and scores were assigned using the following classification system (scores in parentheses): >= .3 (4) .2 - .3 (3) < .2 (2) This grid was then multiplied by a weight of 2. ESRI ArcGIS 8.3 withheld 2002 Net Primary Productivity ESRI ArcGIS 8.3 withheld 2002 Slope. Slope percentages were derived from USGS DEM data for the Chesapeake Bay watershed using ArcView Spatial Analyst 3.1. The resulting grid was reclassed and scores were assigned using the following classification system (scores in parentheses): > 15% (4) 15 - 10% (3) 5-10% (2) < 5% (1) The resulting grid was then multiplied by a weight of 3. ESRI ArcView Spaital Analyst 3.1; ESRI ArcGIS 8.3 withheld 2002 Wetland Function. ESRI ArcGIS 8.3 withheld 2002 Forest Fragmentation - Patch Size. An existing Chesapeake Bay Program grid containing average forest patch size in acres by 11-digit watersheds was reclassed, and scores were assigned using the following classification system (scores in parentheses): > 1000 (4) 400 - 1000 (3) 100 - 400 (2) < 100 (1) The resulting grid was multiplied by a weight of 2. ESRI ArcGIS 8.3 withheld 2002 FEMA 100-year flood plain. A polygon coverage of FEMA 100-year flood plains was converted to a grid. Grid cells within 100-year flood plains were given a score of 4, and all other cells were given a score of 0. The resulting grid was multiplied by a weight of 2. ESRI ArcGIS 8.3 withheld 2002 Hydrogeomorphic Regions. A coverage of USGS Hydrogeomorphic Regions was classed, and scores were assigned using the following classification system (scores in parentheses): CPU - Coastal Plain Uplands (4) PCA - Piedmont Carbonate (4) VRS - Valley and Ridge Siliciclastic (4) PCR - Piedmont Crystal (3) BR - Blue Ridge (3) APC - Appalachian Plateau Carbonate (3) CPD - Coastal Plain Dissected Uplands (2) ML - Mesozoic Lowlands (2) VRC - Valley and Ridge Carbonate (2) APS - Appalachian Plateau Siliciclastic (2) CPL - Coastal Plain Lowlands (1) The coverage was converted to a grid, while retaining scores as the grid cell values. The resulting grid was then multiplied by a weight of 2. ESRI ArcGIS 8.3 withheld 2002 Stream Density. Stream length (from NHD), in meters, was summed by 11-digit watershed. The sum for each watershed was then divided by the area (in square kilometers) of each watershed. The resulting values were then classed and scored using the following classification system (scores in parentheses): (in meters/square kilometers) > 1.042 (4) 0.77 - 1.042 (3) 0.524 - 0.769 (2) 0 - 0.523 (1) The resulting grid was then multiplied by a weight of 4. ESRI ArcGIS 8.3 withheld 2002 Percent Forested 1997 MRLC data was reclassed -- forested cells were set to 1, while all other cells were set to 0. A HUC11 coverage was converted to grid, and the Grid ZONALSUM function was used to calculate the number of forested cells within each watershed. Then the MRLC data was reclassed again, with all cells set to 1. The ZONALSUM function was used again to calculate the total number of cells within each watershed. The number of forested cells for each watershed was then divided by the number of total cells in each watershed to calculate a percentage of cells that are forested. The resulting grid was then reclassed and scored using the following classification system (scores in parentheses): 40 - 65% (4) 30 - 40; 65 - 75% (3) 15 - 30; 75 - 85% (2) < 15; > 85% (1) The resulting grid was then multiplied by a weight of 3. ESRI ArcGIS 8.3 withheld 2002 Percent Impervious The grid was reclassed and scored using the following classification system (scores in parentheses): 5 - 15% (4) < 5% (3) 15 - 25% (2) > 25% (1) The resulting grid was then multiplied by a weight of 3. ESRI ArcGIS 8.3 withheld 2002 Water Quality Rankings ESRI ArcGIS 8.3 withheld 2003 Municipal Surface Water Supplies. An excel spreadsheet containing number of surface water intakes per 11-digit watershed, and population served by the supplier operating each intake. Because population figures were repeated for intakes operated by the same supplier, the decision was made to include population figures repeated in different watersheds, and to exclude population figures repeated within a single watershed. The total number of intakes and population served per watershed were summed, and the resulting table joined to a HUC-11 coverage using the watershed ID. Watersheds were then classified as high, medium, or low for number of intakes and population served, separately, as follows: > 6 intakes = High Intakes 3 - 5 intakes = Medium Intakes < 3 intakes = Low Intakes Population > 50,000 = High Population 5,001 - 50,000 = Medium Population <= 5000 = Low Population Watersheds in the High class for either Intakes or Population were assigned a score of 4. Those in the medium class for both Intakes and Population were scored as 3. Those in the low class for one category and the medium for the other were given a score of 2. Those watersheds in the low class for both Intakes and Population were scored as 1. The resulting coverage was converted to a grid, retaining the scores as cell values. The resulting grid was then multiplied by a weight of 4. ESRI ArcGIS 8.3 withheld 2003 Calculate sum of input datasets ESRI ArcGIS 8.3 2003 Chesapeake Bay Program 1997 vector digital data Annapolis, MD Chesapeake Bay Program Derived from USGS 1:100,000 DLG withheld 100000 1997 publication date wbody_mr Proximity to Water Band_1 100.000000 1.000000 8