TABLE C-1 A Classification of Geographic Data Available in the United States: The Physical World

Topic

Features

Examples of Federal Stakeholdersa

Weather

Precipitation, temperature, winds, and humidity

DOE, FEMA, NOAA

Hydrology

Water bodies, drainage/subsurface, wetlands, and watershed/drainage basins

EPA, FWS, NRCS, USDA, USGS

Elevation/bathymetry

Slope, contours, aspect, and digital elevation models (DEMs)

BLM, NOAA, NRCS, USDA, USGS

Physical geology and physical geography

Bedrock geology, surficial geology and geography, soils, and land cover

BLM, DOE, NRCS, USDA, USGS

Energy resources

Coal deposits, oil fields, natural gas reservoirs, geothermal fields, other natural resource deposits

BLM, DOE, EIA, NRCS, USGS

aBLM = Bureau of Land Management, DOE = Department of Energy, EIA = Energy Information Administration, EPA = Environmental Protection Agency, FEMA = Federal Emergency Management Agency, FWS = Fish and Wildlife Service, NOAA = National Oceanic and Atmospheric Administration, NRCS = Natural Resources Conservation Service, USDA = U.S. Department of Agriculture, USGS = U.S. Geological Survey.

C.2.2 Hydrology

A large number of environmental surface features related to water and its movements occur as geographic data. At least six federal agencies are stakeholders in their acquisition and use. Surface water bodies in the United States include rivers, streams, lakes, ponds, reservoirs, and human-made canals. The subsurface (drainage) includes all areas into which water drains and water in various locations below Earth’s surface, such as wells or springs that emit water and aquifers (underground beds).



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