1990. U.S. Geological Survey and U.S. Environmental Protection Agency. This is derived from land use/land cover digital data collected by USGS and coverted to ARC/INFO by the EPA. This data is useful for environmental ...
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1994. U.S. Geological Survey. This shapefile contains the boundaries of the 8-digit watersheds that intersect New York State. These hydrologic unit boundaries provide a uniquel...
1938. U.S. Geological Survey. Historic aerial photos of Wisconsin from 1937-1941.
1938. U.S. Geological Survey. Historic aerial photos of Wisconsin from 1937-1941.
1937. U.S. Geological Survey. Historic aerial photos of Wisconsin from 1937-1941.
1997. U.S. Geological Survey. This data set includes agricultural minerals operations in New York State. The data represent commodities covered by the Minerals Information Team ...
1997. U.S. Geological Survey. The locations of features labeled as "Airports" in the U.S. Geological Survey's Geographic Names Information System (GNIS) datafiles, 1997. The GN... Napa County (Calif.). County Of Napa.
2002. U.S. Geological Survey. This Butterfly Occurrence Database portrays the occurrence of butterflies in counties in New York State. Butterfly occurrence data are cumulative, ...
1980. Research Data Services (RDS), Columbia University Libraries and U.S. Geological Survey. This is a scanned version of the paper map entitled: California. The original map is on two sheets, one each for the upper and lower halves of Cal...
1997. U.S. Geological Survey. This data set portrays the National Agricultural Statistics Service, U.S. Department of Agriculture's 1997 Census data for the United States, prese...