“The Web Soil Survey (WSS) provides soil data and information produced by the National Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and provides access to the largest natural resource information system in the world.”  USDA  Natural Resources Conversation Service

To find your soils on the web soil survey go to:  http://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm