| Database | Agency | URL | Remarks |
|---|---|---|---|
| Arsenic in Ground Water of the U.S. | USGS | http://co.water.usgs.gov/trace/arsenic | On-line maps, data, and reports based on 18,000 samples over 20 years. |
| Biomonitoring of Environmental Status and Trends (BEST) | USGS | http://www.best.usgs.gov/ | Data and information on contaminants and their effects on species and lands under the stewardship of the Department of the Interior. |
| Coal Quality | USGS | http://energy.er.usgs.gov/products/openfile/OFR97-447/index.htm | Coal production information, in short tons, for the major producing states within the conterminous U.S. (exclusive of Alaska), by major coal producing regions. |
| Coal Resources | USGS | http://energy.er.usgs.gov/products/databases/USCoal/index.htm | Location, quantity, and physical and chemical characteristics of U.S. coal and coal-related deposits |
| Energy | USGS | http://energy.er.usgs.gov/products/databases/Coalbibs/index.htm | Database contains publications of the USGS Energy Resources Program from 1994 through 1997 on coal, oil, and natural gas |
| Geologic Radon Potential of the United States | USGS | http://sedwww.cr.usgs.gov:8080/randon/mus.html | National and regional maps of geologic radon potential |
| Global Land Cover Characterization | USGS, EPA, NOAA, NASA, USFS | http://edcdaac.usgs.gov/glcc/glcc.html | Description and ordering information for global land-cover datasets. |
| Ground Water Atlas of the United States | USGS | http://capp.water.usgs.gov/gwa | On-line and print maps and descriptions of the major aquifers in each region of the U.S. |
| Integrated Taxonomic Information Systems (ITIS) | USGS, USDA, NOAA, EPA | http://www.itis.usda.gov/plantproj/itis/index.html | On-line catalog of Scientific names of North American plants and animals. |
| Mineral Resources Spatial Data | USGS | http://mrdata.usgs.gov/ | Comprehensive geologic and geochemical database for geology, soil and sediment chemistry and minerals |
| National Assessment of Mercury in Aquatic Ecosystems | USGS | http://toxics.usgs.gov/regional/mercury.html | Information, maps, and reports on source, distribution, and transformations of mercury in water, sediment, and biota. |
| National Atlas of the United States | USGS | http://www.nationalatlas.gov/ | Downloadable digital maps of about 100 national coverages. Includes mortality, nuclear sites, mineral operations, and many more. |
| National Atmospheric Deposition Program (NADP) | USGS | http://bqs.usgs.gov/acidrain | pH and chemistry of rain and snow from 220 monitoring sites |
| National Biological Information Infrastructure | USGS | http://www.nbii.gov/ | Comprehensive database on biological issues and data, including West Nile virus. |
| National Contaminant Biomonitoring Program (NCBP) | USGS | http://www.cerc.usgs.gov/data/ncbp/ncbp.html | Concentrations of organochlorine pesticides and trace elements in fish and starlings collected nationwide, from 1969-1986. |
| National Hydrography Dataset | USGS, EPA | http://nhd.usgs.gov/ | Digital maps of stream reaches linked as a streamflow network |
| National Irrigation Water Quality Program | USGS | http://www.usbr.gov/niwqp/datasyn.html | Chemical data from water, sediment, and biota from 26 irrigation drainage projects in western U.S. |
| National Land Cover Dataset | USGS, EPA | http://edcwww.cr.usgs.gov/programs/lccp/natllandcover.html | Description and ordering information for digital land-cover maps with 21 classes of land cover. |
| National Reconnaissance of Emerging Contaminants in the Nation's Waters | USGS | http://toxics.usgs.gov/regional/emc.html | Information, maps, and (soon) data on pharmaceuticals, wastewater products, and hormones from 100 stream samples. |
| National Stream Quality Accounting Network (NASQAN) | USGS | http://water.usgs.gov/nasqan | Concentrations of pesticides, trace elements, and other chemicals at 40 stations on four large U.S. rivers. |
| National Water Information System | USGS | http://water.usgs.gov/nwis | Real-time and hsitorical streamflow data for over 4,000 stations in the U.S. |
| National Water Quality Assessment Program (NAWQA) | USGS | http://water.usgs.gov/nawqa | Information, on-line reports, and on-line data bases on pesticides, volatile organics, nutrients, trace elements, and biology in surface and ground water. |
| Principal Aquifers | USGS | http://www.nationalatlas.gov/aquifersm.html | Distribution of the principal aquifers that supply water to the conterminous U.S. (Downloadable map) |
| Water Use in the United States | USGS | http://water.usgs.gov/watuse/ | On-line data and reports on water use by category and by county. |
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