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...

21. 7.5 minute digital elevation models (DEM) for Virginia (30 meter): Virginia, 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...

22. 7.5 minute digital elevation models (DEM) for West Virginia (30 meter): West Virginia, 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...

23. 7.5 minute Digital Raster Graphics for Pennsylvania - UTM - cropped collars: Pennsylvania, 1996

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map with cropped collars, georeferenced to the UTM grid.

24. 7.5 minute Digital Raster Graphics for Pennsylvania - UTM grid - NAD 1983 - cropped collars: Pennsylvania, 1996

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map with cropped collars, georeferenced to the UTM gr...

25. 7.5 minute Digital Raster Graphics for Pennsylvania- Albers - cropped collars: Pennsylvania, 1996

1996. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map with cropped collars in Albers projection.

26. 7.5 minute Digital Raster Graphics for Pennsylvania UTM grid - NAD 1983: Pennsylvania, 1996

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...

27. 7.5 minute Digital Raster Graphics UTM: Pennsylvania, 1996

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...

28. Aerial Imagery: Iowa, 2016

2016. Iowa Homeland Security and Emergency Management. This aerial imagery was flown in the spring of 2016 over the eastern part of the state. it is four-band imagery that includes the near-infra-red ba...

29. Aerial Photography: Carver County, Minnesota, 2005

2005. CarverGIS. Carver County 2005 Aerometric Imagery.

30. Aerial Photography: Carver County, Minnesota, 2008

2008. CarverGIS. Carver County 2008 Pictometry Imagery.

31. Aerial Photography: Carver County, Minnesota, 2011

2011. CarverGIS. Carver County 2011 Pictometry Imagery.

32. Aerial Photography: Carver County, Minnesota, 2013

2013. CarverGIS. Carver County 2013 Aerometric Imagery.

33. Aerial Photography: Iowa, 1930s

1930. Iowa DNR. This dataset represents panchromatic orthophoto imagery produced from black and white aerial photographs. This dataset was developed from individua...

34. Aerial Photography: Iowa, 1950s

1950. Iowa DNR. This dataset represents panchromatic images produced from black and white aerial photographs. This dataset was developed from individual aerial ima...

35. Aerial Photography: Iowa, 1960s

1960. Iowa DNR. This dataset represents panchromatic images produced from black and white aerial photographs. This dataset was developed from individual aerial ima...

36. Aerial Photography: Iowa, 1970s

1970. Iowa DNR. This dataset represents panchromatic images produced from black and white aerial photographs. This dataset was developed from individual aerial ima...

37. Allegheny County - Blocks: Pennsylvania, 2002

2002. Allegheny County Division of Computer Services Geographic Information Systems Group. Derived from original MAPINDX: Map Index Sheets from Block and Lot Grid of Property Assessment and based on aerial photography, showing 1983 datum ...

38. Allegheny County - Contours: Pennsylvania, 2006

2006. Allegheny County Division of Computer Services Geographic Information Systems Group. Contour data was created as a result of a county flyover in the spring of 2004. Contours were created from a DTM Feature Dataset, upgraded by Baker...

39. Allegheny County - Slopes: Pennsylvania, 2010

2010. Allegheny Places Design Team. Slope data.

40. Allegheny County - Spot Elevation: Pennsylvania, 2006

2006. Allegheny County Division of Computer Services Geographic Information Systems Group. Spot Elevation data was created as a result of a county flyover in the spring of 2004. They were created from a DTM Feature Dataset, upgraded by Ba...

41. Allegheny County - Urban Tree Canopy: Pennsylvania, 2010

2010. University of Vermont Spatial Analysis Laboratory and Allegheny County Division of Computer Services Geographic Information Systems Group. Allegheny County Urban Tree Canopy. High resolution land cover dataset for Allegheny County, Pennsylvania.

42. Allegheny County Imagery 2010 - Tile Index: Pennsylvania, 2010

2010. Allegheny County Division of Computer Services Geographic Information Systems Group. TILE INDEX - Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for c...

43. Allegheny County Imagery 2010: Pennsylvania, 2010

2010. Allegheny County Division of Computer Services Geographic Information Systems Group. Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for camera lens di...

44. Allegheny County Imagery 2013 - Tile Index: Pennsylvania, 2013

2013. Allegheny County Division of Computer Services Geographic Information Systems Group. Tile Index - Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for c...

45. Allegheny County Imagery 2013: Pennsylvania, 2013

2013. Allegheny County Division of Computer Services Geographic Information Systems Group. Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for camera lens di...

46. Andreas Atlas: Iowa, 1875

1875. Iowa DNR. This dataset is a georectified image of the Illustrated Historical Atlas of the State of Iowa, 1875 by A.T. Andreas. The David Rumsey Map Collectio...

47. Aquatic Resources Combined - Central Appalachian Forest Ecoregion: Pennsylvania, 2010

2010. Natural Lands Trust. This raster dataset is a compilation of several data sets that have been combined to create an overall aquatic resources conservation value raster ...

48. Aquatic Resources Combined - High Allegheny Plateau Ecoregion: Pennsylvania, 2010

2010. Natural Lands Trust. This raster dataset is a compilation of several data sets that have been combined to create an overall aquatic resources conservation value raster ...

49. Base Flood Elevation: Carver County, Minnesota

2014. CarverGIS. 2010 FEMA DFIRM base flood elevations.

50. Benton Township PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of Benton Township and surrounding area.

51. Bird Areas - High Allegheny Plateau Ecoregion: Pennsylvania, 2010

2010. Natural Lands Trust. This raster dataset has been created using the NImportant Bird AreasN as originated by the Pennsylvania Audubon Society. All areas designated as co...

52. Bird Habitat - Central Appalachian Forest Ecoregion: Pennsylvania, 2010

2009. Natural Lands Trust. This raster dataset has been created using the original data NPennsylvania conservation gap avian habitat modelsN as originated by the Environmenta...

53. Bird Habitat - High Allegheny Plateau Ecoregion: Pennsylvania, 2010

2010. Natural Lands Trust. This raster dataset has been created using the original data NPennsylvania conservation gap avian habitat modelsN as originated by the Environmenta...

54. Buildings Sauk County, Wisconsin, YE2016

2016. Sauk County Land Information/GIS Department. This polygon data layer represents buildings in Sauk County, Wisconsin at year-end 2016. It is a feature class within the geodatabase, Sauk_Buildin...

55. Camden Township PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of Camden Township and surrounding area.

56. Chesapeake Bay Watershed Land Cover Data Series 1984: Chesapeake Bay, 1984

1983. U.S. Geological Survey. To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

57. Chesapeake Bay Watershed Land Cover Data Series 1992: Chesapeake Bay, 1992

1992. U.S. Geological Survey. To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

58. Chesapeake Bay Watershed Land Cover Data Series 2001: Chesapeake Bay, 2001

2001. U.S. Geological Survey. To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

59. Chesapeake Bay Watershed Land Cover Data Series 2006: Chesapeake Bay, 2006

2006. U.S. Geological Survey. To better understand how the land is changing and to relate those changes to water quality trends, the USGS funded the production of a Chesapeake B...

60. City Boundary: Ann Arbor, Michigan, 2015

2015. Scott Harrod and City of Ann Arbor. Polygons defining the boundary of the city of Ann Arbor.

61. City Council Wards with Demographics: Minneapolis, Minnesota, 2016

2012. City of Minneapolis GIS Office. Council ward boundaries with Council member contact information and enhanced population demographics from the 2010 U.S. Census.

62. City of Carver PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Carver and surrounding area.

63. City of Chanhassen PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Chanhassen and surrounding area.

64. City of Chaska PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Chaska and surrounding area.

65. City of Cologne PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Cologne and surrounding area.

66. City of Hamburg PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Hamburg and surrounding area.

67. City of Mayer PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Mayer and surrounding area.

68. City of New Germany PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of New Germany and surrounding area.

69. City of Norwood Young America PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Norwood Young America and surrounding area.

70. City of Victoria PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Victoria and surrounding area.

71. City of Waconia PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Waconia and surrounding area.

72. City of Watertown PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of the City of Watertown and surrounding area.

73. City Owned Parcels: Ann Arbor, Michigan, 2015

2015. City of Ann Arbor - Community Services and City of Ann Arbor. Polygon parcels of land owned by the City of Ann Arbor near or in the City Boundary.

74. Color-Infra-Red Aerial Photography: Iowa, 1980s

1980. Iowa DNR. This data represents a color-infrared (CIR) county orthophoto mosaic in MrSID image format produced from CIR aerial photographs of a particular Iow...

75. Commissioner Districts PDF Map: Carver County, Minnesota, 2017

2017. CarverGIS. A downloadable, 20 x 20 inch PDF map identifying the County's five Commissioner District boundaries as of 2017.

76. Conservation Resources: Pennsylvania, 2006

2006. Natural Lands Trust with input data from PA DEP. This raster dataset is a compilation of three groups of data including Aquatic Resources, Terrestrial Resources, and Rarity. Several data sets were...

77. Contiguous Grasslands: Pennsylvania, 2006

2006. Natural Lands Trust with input data from PA DEP. This raster dataset has been created using NPennsylvania Land Cover dated 1992N developed by the EROS Data Center for EPA Federal Region III (see m...

78. Contiguous Scrub Transitional: Pennsylvania, 2006

2006. Natural Lands Trust with input data from PA DEP. This raster dataset has been created using NPennsylvania Land Cover dated 1992N developed by the EROS Data Center for EPA Federal Region III (see m...

79. Cropland Data Layer 2006: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

80. Cropland Data Layer 2007: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

81. Cropland Data Layer 2008: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

82. Cropland Data Layer 2009: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

83. Cropland Data Layer 2010: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

84. Cropland Data Layer 2011: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

85. Cropland Data Layer 2012: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

86. Cropland Data Layer 2013: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

87. Cropland Data Layer 2014: Minnesota

2015. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

88. Cropland Data Layer 2015: Minnesota

2016. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

89. Crops for 2003, Derived from National Agricultural Statistics Service: Indiana, 2004

2004. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set IN03NASS.TIF: The USDA-NASS 2003 Indiana Cropland Data...

90. Crops for 2006, Derived from National Agricultural Statistics Service: Indiana, 2007

2007. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_AWIFS_R_IN_2006.tif: The USDA-NASS 2006 Indiana Cr...

91. Crops for 2008, Derived from National Agricultural Statistics Service: Indiana, 2010

2010. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_AWIFS_R_IN_2008.tif: The USDA, NASS Cropland Data ...

92. Crops for 2009, Derived from National Agricultural Statistics Service: Indiana, 2013

2013. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2009_CLIP_20131230093625_434373848.tif: The USDA, ...

93. Crops for 2010, Derived from National Agricultural Statistics Service: Indiana, 2013

2013. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2010_CLIP_20131230093625_434373848.tif: The USDA, ...

94. Crops for 2011, Derived from National Agricultural Statistics Service: Indiana, 2013

2013. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2011_CLIP_20131230093625_434373848.tif: The USDA, ...

95. Crops for 2012, Derived from National Agricultural Statistics Service: Indiana, 2013

2013. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2012_CLIP_20131230093625_434373848.tif: The USDA, ...

96. Crops for 2013, Derived in National Derived from National Agricultural Statistics Service: Indiana, 2014

2014. United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS), Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Section (SARS). The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2013_CLIP_20131230093625_434373848.tif: The USDA, ...

97. Dahlgren Township PDF Map: Carver County, Minnesota

2017. CarverGIS. A downloadable, printable 8.5 x 11 inch PDF map of Dahlgren Township and surrounding area.

98. DC Boundary: Washington, D.C.

2015. District of Columbia GIS Program. District of Columbia boundary. The dataset is a polygon representing the District of Columbia boundaryC. Office of the Chief Technology Officer (OC...

99. DC Quadrants: Washington, D.C.

2015. District of Columbia GIS Program. District of Columbia quadrants. The dataset contains locations and attributes of the District of Columbia quadrants. Office of the Chief Technology...

100. Delaware Water Gap Color Infra-Red Photos: Delaware River Basin, 2000

2000. US Geological Survey (USGS). arieal photography of the Delaware Water Gap including the surrounding watersheds and tributaries.