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 Time Period 1900-1949 Remove constraint Time Period: 1900-1949
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ArcGIS REST Services Directory for Ashtabula County, Ohio

1938-present. ArcGIS REST site referencing layers for all common data types and more. Also contains aerial photography from 1938, 2006-2017 (4yrs). Contains refe...

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ArcGIS REST Services Directory for Cincinnati, Ohio

1932-present. ArcGIS REST site referencing layers for all common data types and more. Also contains aerial photography from 1996-2017 (10yrs). Also references hi...

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GeoDataBase Files Downloads for Montgomery County, Ohio

1936-present. Montgomery County Auditor's Office. Website containing downloadable zip file (large > 1GB) containing all common geospatial datasets. Also contains aerial photography for selected ye...

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Historical Aerial Photography: Illinois, 1937-1947

1936-1941. 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...

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Public FTP for Mahoning County, Ohio

1900-present. Mahoning County GIS Dept. FTP site containing downloadable datasets for parcels, boundaries, addresses, transportation, hydrology, land use, and more. Also contains aerial p...