Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1. 108th Congressional Districts for the Delaware River Basin Area: Delaware River Basin, 2004

2004. Delaware River Basin Commission (DRBC). 108th Congressional Districts for the Delaware River Basin Area. These were compiled from the 4 basin states and combined into one layer.

2. 1:100,000 Digital Raster Graphics for Delaware: Delaware, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

3. 1:100,000 Digital Raster Graphics for Maryland

1995. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

4. 1:100,000 Digital Raster Graphics for Virginia: Virginia, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

5. 1:100,000 Digital Raster Graphics for West Virginia: West Virginia, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

6. 1:100,000 Digital Raster Graphics: Maryland, 2000

1995. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

7. 1:100k Digital Raster Graphic - Collars Removed: Minnesota

2015. U.S. Geological Survey (USGS) and Minnesota Department of Natural Resources (DNR). A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

8. 1:24,000 - 7.5 minute Digital Raster Graphics for Maryland: Maryland, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

9. 1:24,000 - 7.5 minute Digital Raster Graphics for the District of Columbia: District: District of Columbia, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

10. 1:24,000 - 7.5 minute Digital Raster Graphics for West Virginia: West Virginia, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

11. 1:24,000 - 7.5 minute Digital Raster Graphics: New Jersey, 2000

1995. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

12. 1:24k Digital Raster Graphic - Collars Removed: Minnesota

2015. U.S. Geological Survey (USGS) and Minnesota Department of Natural Resources (DNR). A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

13. 1:250,000 Digital Raster Graphics for Delaware: Delaware, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

14. 1:250,000 Digital Raster Graphics for Maryland

1995. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

15. 1:250,000 Digital Raster Graphics for Maryland: Maryland, 2000

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

16. 1:250,000 Digital Raster Graphics for Virginia: Virginia, 2000

1996. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

17. 1:250,000 Digital Raster Graphics for West Virginia: West Virginia, 2000

1995. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

18. 1:250k Digital Raster Graphic - Collars Removed: Minnesota

1998. U.S. Geological Survey and Minnesota DNR. A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

19. 1945 and 1959 Residential Land Use: Metro Twin Cities, Minnesota

2015. Metropolitan Council. This dataset outlines areas that had residential land use in 1945 and 1959 as shown on a map included in the Metropolitan Land Study, dated April 1...

20. 1990 to 2000 Census Tract Correspondence and Combined Tracts: Metro Twin Cities, Minnesota

2015. Metropolitan Council. This dataset consists of a correspondence table and shape file of the combined 1990 and 2000 Census tracts.Note: Census tracts from 1990 and 2000 d...