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...
1965. United States Department Of Agriculture (USDA) and Cornell University Agricultural Experiment Station. Various county departments, local municipal agencies, and other not-for-profit organizations have identified the need for a digital soil coverage d...
2006. U.S. Department of Agriculture, Natural Resources Conservation Service. STATSGO2 consists of general soil association units. It was developed by the National Cooperative Soil Survey and supersedes the State Soil Geograp...