| Spatial
Resolution (# Sites) | Temporal
Resolution/ Time step | Quality | Source | |
| Model Inputs | ||||
| Time Series | ||||
| Precipitation & Temp. | 7 stations | 50 yrs/daily | good | EARTHINFO[1] |
| Wind speed, Humidity | 2 stations | 5 yrs/daily | good | EARTHINFO[1] |
| Habitat parameters | ||||
| Forest: | ||||
| Tree Growth Dynamics. | species level | 1/yr | good | NE TWIGS FVS[2, 3] |
| Nutrient Dynamics | E US/20 sites | 1/yr | good | Johnson and Lindberg [4] |
| Wetlands: | ||||
| Nutrient Retention Rates | Pax R/ 6 sites | one time | good | CEES[5] JHU[6] |
| Stock Values | 225 locations | 7 to 10 /year | good | CBP [7] |
| Population Dynamics | mesocosms | biweekly | good | MEERC[8] |
| Agriculture | ||||
| BMP Parameters: | ||||
| Fertilizer Applications | state | annual | good | UM-Ag. Extension[9, 10] |
| Nutrient Reduction/ Retention Rates | state/by county | annual | fair | CBP/UM-Ag. Extension[11]; MOP[12] |
| Population Dynamics | 1 point | 4000 yrs/ 1d | good | EPIC model database[13] |
| Soil Interactions | 0.1 km2 | daily | good | WEPP model database[14] |
| Urban | ||||
| % Impervious Surface | landuse /type | none | good | MOP [38]; SCS [15] |
| Nutrients in Runoff | landuse/ soil | event | good | NURP US EPA[16] |
| Point Source Nitrogen | all NPDES | 10 yrs/monthly | good | MDE |
| Urban BMP Efficiencies | counties | event | fair | MOP[12] |
| GIS coverages | ||||
| Land Use | 200m; 30m | 1984-94 / 5x | good | MOP[17] NOAA[18]EPA[19] |
| River Network | 200m | none | good | U.S. Census Bureau [20] |
| Soils | 200m | none | good | MOP, STATSGO[21] |
| Elevation | 3 arcsec | none | good | DEM USGS[22] |
| Watershed Boundary | 200m | none | good | based on elevation |
| Estuarine Bathymetry | 200m | none | good | NOAA/NOS [23] |
| Roads and Towns | vector | none | good | U.S. Census Bureau [20] |
| Groundwater (Initial) | 200m | 1985 | fair | USGS[24], elev., river |
| Calibration Data | ||||
| Streamflow | 13 stations | 1979-95/daily | good | USGS [25] |
| Surface Water Quality | 13 stations | 10 yr /bi-weekly | good | CBP[26] ACB[27] |
| Groundwater Levels | 16 stations | 5 yr /monthly | good | USGS[24] |
| Groundwater Quality | 105 stations | 1973-90 1x/well | fair | MDE[28], USGS[29] |
| NDVI (Green Index) | 1250m | 1993/monthly | good | USGS[30] |
| Forest Dynamics | 187 sites | 10 yrs /10 yr | fair | FIA [31] |
| Tree Ring Data | 11 sites | 175 yrs /1 yr | good | NOAA[32], IEE |
| Agricultural Census Data | state & county | 50 yrs /5 yr | good | USDA[33]; USBC[34, 35] DHMH[36] |
| Urban Development | 3 arcsec | 1792-1992/ 13x | good | BWRC[37] |
1. EARTHINFO, I., NCDC Summary of the Day. East 1993. 1993, EARTHINFO, Inc.: Boulder, CO.
2. Bush, R.R., Northeastern TWIGS Variant of the Forest Vegetation Simulator. 1995, Forest Management Service Center.
3. USDA Forest Service, The Forest Vegetation Simulator (FVS) and Insect and Pathogen Models, , http://162.79.41.7/fhtet/background.html.
4. Johnson, D.W. and S.E. Lindberg, Atmospheric deposition and forest nutrient cycling: a synthesis of the integrated forest study. 1992, New York: Springer-Verlag.
5. Zelenke, J.L., Cornwell J.C., Nutrient Retention in the Patuxent River Marshes. 1996, Horn Point Environmental Laboratory, UMD, Cambridge, MD.
6. Kahn, H. and G.S. Brush, Nutrient and metal accumulation in a freshwater tidal marsh. Estuaries, 1994. 17(2): p. 345-360.
7. EPA Chesapeake Bay Program, The Biological Data and Information Page, http://www.epa.gov/docs/r3chespk/cbp_home/infobase/lr/lrsctop.htm.
8. Multiscale Experimental Ecosystem Research Center - MEERC, Welcome to the MEERC World Wide Web (W3) Server., , http://kabir.cbl.cees.edu/Welcome.html.
9. Bandel, V.A., Heger, E.A., MASCAP - Maryland's Agronomic Soil Capability Assessment Program. 1994, University of Maryland Cooperative Extension Service and Department of Agronomy in cooperation with USDA Soil Conservation Service: College Park, MD.
10. Coale, F., Fertilizer application rate and timing. 1995, Cooperative Extension Service, College Park, MD.
11. Steinhilber, P., FY 95 New Plan Fertilizer N, P205, and K20 reductions for selected crops. 1995, Nutrient Management Program.
12. Nonpoint Source Assessment and Accounting System. 1993, Maryland Office of Planning and Maryland Dept. of Environment.
13. Williams, J.R., P.T. Dyke, and C.A. Jones, EPIC: a model for assessing the effects of erosion on soil productivity., in Analysis of Ecological Systems: State-of-the-Art in Ecological Modeling, W.K. Laurenroth et al., Editors. 1983, Elsevier: Amsterdam. p. 553-572.
14. National Soil Erosion Laboratory, Water Erosion Prediction Project (WEPP), http://soils.ecn.purdue.edu/~wepphtml/wepp/wepptut/ahtml/avi/welcome.au.
15. Soil Conservation Service, Urban Hydrology for Small Watersheds. 1975, USDA Soil Conservation Service, Engineering Division.
16. U.S. Environmental Protection Agency, Results of the Nationwide Urban Runoff Program. 1983, Water Planning Division: Washington, DC.
17. Maryland Office of Planning, Maryland State Data Center, , http://www.inform.umd.edu/UMS+State/MD_Resources/MSDC/.
18. USDC NOAA Coastal Service Center, C-CAP. Coastal Change Analysis Program, http://www.csc.noaa.gov/ccap/.
19. Vogelmann, J., MRLC landuse coverages for 1992-93, . 1996, EROS Data Center.
20. U.S.Census Bureau, TIGER: The Coast to Coast Digital Map Database, , http://www.census.gov/geo/www/tiger/.
21. NRCS USDA, State Soil Geographic (STATSGO) Data Base, , http://www.ncg.nrcs.usda.gov/statsgo.html.
22. USGS, USGS Digital Elevation Model Data, , http://edcwww.cr.usgs.gov/glis/hyper/guide/usgs_dem.
23. NOAA/National Ocean Service, MapFinder. Preview Demonstration of August 1997 Offering, http://mapindex.nos.noaa.gov/.
24. James, R.W.J., Horlein, J.F., Strain, B.F., Smigaj, M.J., Water Resources Data. Maryland and Delaware. Water year 1990. Volume 1. Atlantic Slope Basins, Delaware River through Patuxent River. 1990, US Geological Survey: Towson, MD.
25. USGS, Maryland Surface-Water Data Retrieval, , http://h2o.usgs.gov/swr/MD/.
26. EPA Chesapeake Bay Program, Water Quality Monitoring. Data Sets and Documentation, http://www.epa.gov/docs/r3chespk/cbp_home/infobase/wqual/wqgate.htm.
27. Judd, M., Citizen Monitoring Data, . 1996, Alliance for the Chesapeake Bay.
28. Wilde, F.D., Geochemistry and Factors affecting ground-water Quality at Three Storm-Water-Management sites in Maryland, . 1994, Department Of Natural Resources Maryland Geological Survey in cooperation with USGS, Maryland Department of the Environment and the Governor's Commission on Chesapeake Bay Initiatives.
29. McFarland, E.R., Relation of Land Use to Nitrogen Concentration in Ground Water in the Patuxent River Basin Maryland. 1995, USGS.
30. Jones, J., Normalized-Difference Vegetation Index, . 1996, Research & Applications Group, USGS, Reston.
31. Hansen, M.H., Frieswyk, T., Glover, J. F., Kelly, J. F., The Eastwide Forest Inventory and Analysis Data Base: Users Manual, , http://www.srsfia.usfs.msstate.edu/ewman.htm.
32. NOAA Paleoclimatology Program, Tree Ring Data., , http://www.ngdc.noaa.gov.paleotreering.html.
33. Economic Research Service, U., ERS Databases, , http://www.econ.ag.gov/Prodsrvs/dataprod.htm.
34. Bureau of the Census, 1987 Census of Agriculture. Volume 1.Geographic Area Series. Part 20. Maryland, State and County Data.. 1989, US Department of Commerce: Washington, DC.
35. Government Information Sharing Project: Oregon State University - Information service, Census of Agriculture: 1982, 1987, 1992, , http://govinfo.kerr.orst.edu/ag-stateis.html.
36. Maryland Department of Health and Mental Hygiene, Description of the Patuxent Watershed Nonpoint Source Water Quality Monitoring and Modeling Program Data Base and Data Base Management System, . 1986, MDE, Office of Environmental Programs, Water Management Administration, Division of Modeling and Analysis.
37. Baltimore - Washington Regional Collaboratory, 200 Years of Spatial Data, , UMBS, NASA, USGS, http://research.umbc.edu/~tbenja1/bwhp/main.html.
38. Maryland Office of Planning. 1973. Natural Soil Groups
of Maryland Technical Report. MD Dept. of State Planning.
December, 1973 No. 199.
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