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You searched for: Genre Geospatial data Remove constraint Genre: Geospatial data Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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1.
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104 State Water Plan Watersheds: Pennsylvania penn-state

1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,...

2.
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Active Railroads: Pennsylvania penn-state

1996. Environmental Resources Research Institute. Location of active rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable Mylar base.

14.
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Aggregate Resources 1997, 2020 and 2040: Minnesota minnesota

1997-2040. The Aggregate Resources (sand, gravel and limestone and dolomite) dataset contains three separate shape files for aggregate resources for 1997, 202...

16.

Agriculture Census: Indiana purdue

1997. United States Geological Survey and Bernardin-Lochmueller & Associates. USGS National Atlas metadata states "This data set portrays the National Agricultural Statistics Service, U.S. Department of Agriculture's 1997 Ce...

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Airports: Centre County, Pennsylvania penn-state

1995. Centre County Government. Point Feature Class - It was originally captured as part of the 1995 Aerial Imagery project completed by Kimball.

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Allegan County GIS Data Library michigan-state

1999-2019. Allegan County Land Information Services. The GIS Data Library page on the Allegan County, Michigan website provides links for zipped shapefile downloads. Common resource topics are covered...