Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1. 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...

2. 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...

3. 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...

4. 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...

5. 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...

6. 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...

7. 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...

8. 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...

9. 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...

10. 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...

11. 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...

12. 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...

13. 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...

14. 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...

15. 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...

16. 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...

17. 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...

18. 2009 Wild and Scenic River Aerial Oblique CIR Photo Index: Minnesota

2014. Minnesota Department of Natural Resources (DNR). Index to high quality Color Infrared oblique aerial imagery of Minnesota wild and scenic river system. Leaf off, snow off conditions. Feature class...

19. 2017 Polling Places PDF Map: Carver County, Minnesota, 2017

2017. CarverGIS. A downloadable, printable 20 x 20 inch PDF map of Carver County's voting districts and polling places as of 2017.

20. 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter): Washington DC, 2000

1979. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...