Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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You searched for: Subject Inland Waters Remove constraint Subject: Inland Waters Data type Raster Remove constraint Data type: Raster
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1. Historical Aerial Photography: Illinois, 1937-1947

1936. Illinois State Geological Survey. The primary data set consists of historical black and white aerial photographs from Illinois acquired during 1936 to 1941. Alternative years of pho...

2. Reed Canary Grass Dominated Wetlands Wisconsin, 2006

2008. Wisconsin Department of Natural Resources (WDNR). This Grid-format data set is a raster representation of the reed canary grass dominated wetlands of Wisconsin, derived from Landsat satellite image...

3. Source Water Protection: Iowa

2017. Iowa DNR. Source Water is a lake, stream, river or aquifer where drinking water is obtained. Source Water Protection (SWP) is the act of preventing contamina...