GIS and Related Data Links and/or Sources

Courtesy of Dr. Gene Yagow, Research Scientist,

Biological Systems Engineering Dept., Blacksburg, VA (dated 10/8/03)

A. GIS Spatial Data Layers

1. Boundary Layers
1. Census Data:

i. http://www.census.gov/census2000/states/va.html

ii. http://www.esri.com/data/download/census2000_tigerline/index.html (Census Block Groups, Blocks, Tracts, Counties)

2. Cartographic Boundary Files: http://www.census.gov/geo/www/cob/
3. 3-digit and 5-digit Zip Code Tabulation Areas: same as A.1.b.
4. DCR 14-Digit Hydrologic Unit Boundaries:
5. USGS 7.5” Quadrangle Boundaries:
6. EPA Level III/IV Ecoregions: ftp://ftp.epa.gov/pub/wed/ecoregions/va
1. Census Line and Point Data (Hydrography, Rails, Roads) same as A.1.a.ii.

3. Soils:
1. STATSGO Soils: http://soils.usda.gov
2. SSURGO Soils: http://soils.usda.gov
3. Soils Attribute Data: USDA’s National Soil Survey Center: www.statlab.iastate.edu/soils/nsdaf
4. Elevation
1. Radford Univ. Dept. of Geography: www.radford.edu/~geoserve/main_page.html
2. USGS EDC National Elevation Dataset: http://edcnts12.cr.usgs.gov/ned/default.asp
5. Streams
1. EPA Reach 3 streams
2. National Hydrography Database: http://nhd.usgs.gov/index.html
3. Virginia 1998 Impaired Stream Segments:
4. Virginia 2002 Impaired Stream Segments:
5. Census 2000 Tiger-Line Data: same as A.1.a.ii.
6. USDA-NRCS Geospatial Data Gateway: http://lighthouse.nrcs.usda.gov/gateway/gatewayhome.html
7. Landuse:
1. USDA-NRCS, 1997 National Resources Inventory:
2. National Land Cover Data. 2000. Multi-Resolution Land Cover Data http://landcover.usgs.gov/nationallandcover.html
3. Virginia GAP Analysis Project: http://fwie.fw.vt.edu/www/vagap/frames.html
4. USGS 7.5-min digital raster graphics (DRG), digital ortho-photo quarter quads (DOQQ) – B&W and color: http://www.radford.edu/~geoserve/main_page.html

8. BASINS 3.0 Dataset: www.epa.gov/waterscience/ftp/basins/gis_data/huc/ (03010101)
1. Populated Place Names
2. USGS/DEQ water quality observation stations

A. Relational or Attribute Data

1. Water Quality Data
1. Long-Term Water Quality Trends: Zipper et al., 1998. VWRRC Special Report No. SR11-1998:
2. EPA STOrage and RETrieval system for water and biological data: www.epa.gov/OWOW/STORET
3. Virginia DEQ Water Quality Monitoring Home Page:
4. EPA, Office of Water, TMDL Program: www.epa.gov/OWOW/tmdl/states/va.html
5. USGS – Water Resources of Virginia: http://va.water.usgs.gov/
2. Precipitation:
1. National Climatic Data Center (http://lwf.ncdc.noaa.gov/oa/ncdc.html)
2. National Oceanic and Atmospheric Association, National Climatic Data Center (NOAA-NCDC): www.ncdc.noaa.gov/oa/climate/climatedata.html
3. National Weather Service (NWS): http://weather.gov
4. 30-Yr Precipitation Normals: NOAA, Climatology of the United States, 1971-2000.
3. Stream Flow
1. USGS Daily Stream Flow: http://waterdata.usgs.gov/va/nwis/ or http://waterdata.usgs.gov/nwis-w/VA/ or http://va.waterdata.usgs.gov/nwis/
4. Population:

a. http://www.virginiaplaces.org/23population.html

b. http://fisher.lib.virginia.edu/census/

c. Census Demographics: same as A.1.a.ii.

d. Weldon Cooper Center at UVA http://www.virginia.edu/coopercenter/

5. Landuse:
1. USDA-NASS, 1997 Census of Agriculture: www.nass.usda.gov/census/

B. References

1. Virginia TMDL Reports: http://www.deq.state.va.us/tmdl/tmdlrpts.html
2. Virginia 305(b) Ambient Water Quality Reports, and 303(d) TMDL Lists: www.deq.state.va.us/water/reports.html
3. Virginia DEQ GEMS Page

C. Models

1. ArcView GWLF Model (AvGWLF) from Penn State: www.avgwlf.psu.edu
2. BasinSim version of GWLF: www.vims.edu/bio/models/basinsim.html
3. EPA Exposure Assessment Models: www.epa.gov/ceampubl/