| Title | Originator | Date | | | | |
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Delaware Water Gap Color Infra-Red Photos
| U.S. Geological Survey | 2000 |
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Delaware Water Gap landuse
| U.S. Geological Survey | 2000 |
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Digital Orthophoto Quarter Quadrangle images for Pennsylvania
| U.S. Geological Survey | 1993 |
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Digital Orthophoto Quarter Quadrangle images for Pennsylvania
| U.S. Geological Survey | 1999 |
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Fault Lines - Topographic Change in Philadelphia, During the Last Century
| U.S. Geological Survey | 2000 |
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Geographic Names Information System (GNIS) for Alaska and Hawaii 2008
| U.S. Geological Survey | 2008 |
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Geographic Names Information System (GNIS) for Pennsylvania
| U.S. Geological Survey | 1981 |
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Geographic Names Information System (GNIS) for Pennsylvania
| U.S. Geological Survey | 2009 |
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Geologic map - Topographic Change in Philadelphia, During the Last Century
| U.S. Geological Survey | 2000 |
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Historic topographic maps for Pennsylvania
| U.S. Geological Survey | 2005 |
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Historic topographic maps for Pennsylvania, Version 2 (Albers)
| U.S. Geological Survey | 2006 |
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National Atmospheric Deposition Program 2004 - Pennsylvania
| U.S. Geological Survey | 2004 |
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National Atmospheric Deposition Program 2005 - Pennsylvania
| U.S. Geological Survey | 2005 |
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National Elevation Dataset for Pennsylvania
| U.S. Geological Survey | 1999 |
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National Hydrography Dataset (NHD) - High-resolution: area features
| U.S. Geological Survey | 2004 |
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National Land Cover Database 2001 - Tree Canopy Layer - Western Pennsylvania and Ohio
| U.S. Geological Survey | 2004 |
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National Land Cover Database 2001 - Tree Canopy Layer -Pennsylvania and Northeast
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Imperviousness Layer - Pennsylvania and Northeast
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Imperviousness Layer - Western Pennsylvania and Ohio
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Arizona, California
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - California, West coast
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Idaho, Utah, Wyoming
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Idaho, Washington, Montana
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Kansas, Nebraska, Oklahoma
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Minnesota, Wisconsin
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Pennsylvania and Northeast
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Texas, Kansas, Oklahoma
| U.S. Geological Survey | 2006 |
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National Land Cover Database 2001 - Land Cover Layer - Texas, Louisiana, Mississippi, Gulf Coast
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Texas, New Mexico
| U.S. Geological Survey | 2006 |
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National Land Cover Database 2001 - Land Cover Layer - Washington State, Northwest coast
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Western Pennsylvania and Ohio
| U.S. Geological Survey | 2003 |
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National Land Cover Database 2001 - Land Cover Layer - Wyoming, Montana, Nebraska, South Dakota
| U.S. Geological Survey | 2006 |
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National Land Cover Dataset 1992 - Pennsylvania; Albers GeoTIFF
| U.S. Geological Survey | 1999 |
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National Land Cover Dataset 1992 - Pennsylvania; Albers Grid
| U.S. Geological Survey | 1999 |
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National Land Cover Dataset 1992 - Pennsylvania; Unprojected/Geographic
| U.S. Geological Survey | 1999 |
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New York state boundary with offshore boundaries
| U.S. Geological Survey | 2005 |
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NHDFlowline - Allegheny
| U.S. Geological Survey | 2004 |
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NHDFlowline - Delaware
| U.S. Geological Survey | 2004 |
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NHDFlowline - Erie
| U.S. Geological Survey | 2004 |
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NHDFlowline - Monongahela
| U.S. Geological Survey | 2004 |
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NHDFlowline - PA, NY, NJ, MD
| U.S. Geological Survey | 2004 |
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NHDFlowline - Pennsylvania (medium resolution)
| U.S. Geological Survey | 1999 |
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NHDFlowline - Potomac
| U.S. Geological Survey | 2004 |
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NHDFlowline - Southwest Lake Ontario
| U.S. Geological Survey | 2004 |
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NHDFlowline - Susquehanna
| U.S. Geological Survey | 2004 |
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NHDFlowline - Upper Chesapeake
| U.S. Geological Survey | 2004 |
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NHDFlowline - Upper Ohio
| U.S. Geological Survey | 2004 |
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NHDFlowline -Pennsylvania
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Allegheny
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Delaware
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Erie
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Monongahela
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Pennsylvania
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Pennsylvania (medium resolution)
| U.S. Geological Survey | 1999 |
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NHDWaterbody - Potomac
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Southwest Lake Ontario
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Susquehanna
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Upper Chesapeake
| U.S. Geological Survey | 2004 |
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NHDWaterbody - Upper Ohio
| U.S. Geological Survey | 2004 |
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NHDWatersheds - Pennsylvania (medium resolution)
| U.S. Geological Survey | 1999 |
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North American Breeding Bird Survey Routes
| U.S. Geological Survey | 1966-present |
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Pennsylvania Digital Elevation Model - 10-meter
| U.S. Geological Survey | 1996 |
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Pennsylvania Digital Elevation Model - 30-meter
| U.S. Geological Survey | 1996 |
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Pennsylvania quadrangle boundaries
| U.S. Geological Survey | 2002 |
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Quadrangle Boundaries for the continental United States
| U.S. Geological Survey | 2002 |
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TILE INDEX - USGS High Resolution Orthoimage for Pittsburgh, PA (Allegheny and Beaver Counties), Urban Area
| U.S. Geological Survey | 2005 |
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Topographic Change - in Philadelphia, During the Last Century
| U.S. Geological Survey | 2000 |
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Topographic Maps (DRG) for Pennsylvania 1:100,000 - UTM
| U.S. Geological Survey | 1996 |
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Topographic Maps (DRG) for Pennsylvania 1:24,000 - Albers - cropped collars
| U.S. Geological Survey | 1996 |
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Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM
| U.S. Geological Survey | 1996 |
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Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM - cropped collars
| U.S. Geological Survey | 1996 |
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Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM - NAD 1983
| U.S. Geological Survey | 1996 |
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Topographic Maps (DRG) for Pennsylvania 1:24,000 - UTM - NAD 1983 - cropped collars
| U.S. Geological Survey | 1996 |
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Topographic Maps (DRG) for Pennsylvania 1:250,000 - UTM
| U.S. Geological Survey | 1996 |
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USGS High Resolution Orthoimage for Mercer County, Pennsylvania
| U.S. Geological Survey | 2005 |
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USGS High Resolution Orthoimage for Pittsburgh, PA (Allegheny and Beaver Counties)
| U.S. Geological Survey | 2005 |
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Waterfowl Breeding Population and Habitat Survey - Segment Center Points (segcenters)
| U.S. Geological Survey | 2004 |
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Waterfowl Breeding Population and Habitat Survey - Strata
| U.S. Geological Survey | 2004 |
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Waterfowl Breeding Population and Habitat Survey - Transects
| U.S. Geological Survey | 2004 |
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