You searched for: Resource Type Polygon data Remove constraint Resource Type: Polygon data Time Period 1950-1999 Remove constraint Time Period: 1950-1999

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Streams and Shorelines [Illinois] Datasets datasets university-of-illinois-urbana-champaign

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.


Unconsolidated Aquifer Systems: Indiana purdue-university

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.

Datasets datasets

Wetlands Inventory & Functional Assessments: Montgomery County, Maryland, 2005-2007 Datasets datasets university-of-maryland

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.


Woodfordian Moraines [Illinois] university-of-illinois-urbana-champaign

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.