Natural Resources Conservation Service soil surveys
Federal Emergency Management Agency (FEMA) maps
National Oceanic and Atmospheric Administration (NOAA)
U.S. Geological Survey (USGS) reports and maps
Elevations, slope, water and drainage features, building and road locations Soil type, depth and permeability, depth to bedrock, slope
Land use, water supply, sewerage systems Climatic data
Geologic data, water quality data
The land area estimates derived in this section are used with the information in Table 2.1 and Table 2.2 to determine, with a study of the maps, whether suitable sites exist for the process under consideration. These preliminary area estimates are very conservative and are intended only for this preliminary evaluation. These estimates should not be used for the final design.
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