Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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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.