Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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You searched for: Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Time Period 2000-2004 Remove constraint Time Period: 2000-2004
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1. 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 ...

2. 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...

3. 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...

4. 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.

5. Estimated Percentages of Impervious Surfaces in 2001, Derived from the National Land Cover Database (NLCD 2001): Indiana, 2003

2003. United States Geological Survey (USGS) (Author) and Indiana Geological Survey (Digital complier). IS2001USGS_IN is a grid (30-meter cell size) showing estimated percentages of impervious surfaces in Indiana in 2001. This grid is a subset of the ...

6. Estimated Percentages of Tree Canopy in 2001, Derived from the National Land Cover Database (NLCD 2001): Indiana, 2003

2003. United States Geological Survey (USGS) (Author) and Indiana Geological Survey (Digital compiler). TC2001USGS_IN is a grid (30-meter cell size) showing the estimated percentages of tree canopy in Indiana in 2001. This grid is a subset of the Nati...

7. Impervious Cover - Central Appalachian Forest Ecoregion: Pennsylvania, 2010

2000. Natural Lands Trust. This raster dataset has been created using the attribute field NValueN from the NImpervious Surface Area for Southeast Pennsylvania, 2000N data as ...

8. Land Cover, Derived from the National Land Cover Database (NLCD 2001): Indiana, 2003

2003. United States Geological Survey (USGS) (Author) and Indiana Geological Survey (Digital compiler). LC2001USGS_IN is a grid (30-meter cell size) showing 2001 land cover data in Indiana. This grid is a subset of the National Land Cover Data (NLCD 2...

9. Mosaic of Des Plaines Watershed, IL/WI - TerraSource Orthorectified Imagery, 2000

2000. Illinois State Geological Survey and ImageAmerica. Note: The original metadata file was written by ImageAmerica. There are a few additions by ISGS required for archival and access in the Survey's en...

10. Mosaic of Illinois 7.5-minute Digital Raster Graphic (DRG) Images, 2003

2003. Illinois State Geological Survey. This is a statewide ArcSDE Raster Mosaic of USGS DRG images of 7.5-minute topographic quadrangles occurring in Illinois. These are unmodified DRG i...

11. NAIP Imagery Wisconsin, 2004

2004. USDA-FSA-APFO. This data set contains imagery from the National Agriculture Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural gr...

12. National Agriculture Imagery Program (NAIP) 2004 for Pennsylvania: Pennsylvania, 2004

2004. USDA-FSA Aerial Photography Field Office. This data set contains imagery from the National Agriculture Imagery Program (NAIP). Funding for upgrading the resolution and scope of the NAIP dat...

13. National Agriculture Imagery Program (NAIP) Aerial Photography: Iowa, 2004

2004. USDA-FSA. This data set contains imagery from the National Agriculture Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural gr...

14. National Land Cover Database 2001 - Imperviousness Layer : Southeast, 2003

2000. U.S. Geological Survey. The National Land Cover Database 2001 for mapping zone 54 was produced through a cooperative project conducted by the Multi-Resolution Land Charact...

15. National Land Cover Database 2001 - Land Cover Layer: Southeast, 2003

2000. U.S. Geological Survey. The National Land Cover Database 2001 land cover layer for mapping zone 54 was produced through a cooperative project conducted by the Multi-Resolu...

16. National Land Cover Database 2001 - Tree Canopy Layer: Southeast, 2003

2000. U.S. Geological Survey. The National Land Cover Database 2001 tree canopy layer for mapping zone 54 was produced through a cooperative project conducted by the Multi-Resol...

17. Purdue Campus: West Lafayette, Indiana, 2000

2000. Purdue University Libraries. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

18. Purdue Campus: West Lafayette, Indiana, 2001

2001. Purdue University Libraries. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

19. Purdue Campus: West Lafayette, Indiana, 2002

2002. Purdue University Libraries. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...

20. Purdue Campus: West Lafayette, Indiana, 2003

2003. Purdue University Libraries. The Purdue historical campus map collection was scanned and georeferenced by Purdue University Libraries. The physical maps were collected as Purdu...