1994. Illinois Department of Natural Resources and Illinois State Geological Survey. Streams and shorelines for Illinois. Derived from USGS 1:100,000 Digital Line Graph files, transportation layer 1980-1986. Each arc carries attribu... Illinois State Geological Survey.
1994. United States Geological Survey (USGS) and Indiana Geological Survey. Five types of unconsolidated aquifers in 12 water-management basins identified by the Indiana Natural Resources Commission (INRC) in Indiana were i... State of Indiana.
1988. Maryland Department of Natural Resources, U.S. Fish and Wildlife Service. Commission staff performed wetland inventories and functional wetland assessments during the years of 2005-2007. Most of the work was in the German... The Maryland-National Capital Park and Planning Commission.
1991. Illinois State Geological Survey. Named Woodfordian moraines, or Wisconsinan End Moraines, of Illinois. Data originally from ISGS Bulletin 94, Pleistocene Stratigraphy of Illinois, ... Illinois State Geological Survey.