1:100,000 Digital Raster Graphics for Delaware
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:100,000 Digital Raster Graphics for Maryland
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:100,000 Digital Raster Graphics for Virginia
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:100,000 Digital Raster Graphics for West Virginia
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:24,000 - 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter)
2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
1:24,000 - 7.5 minute digital elevation models (DEM) for Virginia (30 meter)
2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
1:24,000 - 7.5 minute Digital Raster Graphics for Maryland
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:24,000 - 7.5 minute Digital Raster Graphics for New Jersey
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:24,000 - 7.5 minute Digital Raster Graphics for the District of Columbia
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:24,000 - 7.5 minute Digital Raster Graphics for West Virginia
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:24,000 -7.5 minute digital elevation models (DEM) for West Virginia (30 meter)
2000. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
1:250,000 Digital Raster Graphics for Delaware
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:250,000 Digital Raster Graphics for Maryland
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
1:250,000 Digital Raster Graphics for West Virginia
2000. United States Geological Survey (USGS). A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
Chesapeake Bay Watershed Land Cover Data Series 1984
1984. United States Geological Survey (USGS). 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...
Chesapeake Bay Watershed Land Cover Data Series 1992
1992. United States Geological Survey (USGS). 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...
Chesapeake Bay Watershed Land Cover Data Series 2001
2001. United States Geological Survey (USGS). 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...
Chesapeake Bay Watershed Land Cover Data Series 2006
2006. United States Geological Survey (USGS). 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...
Delaware Water Gap Color Infra-Red Photos: Pennsylvania
2000. United States Geological Survey (USGS). aerial photography of the Delaware Water Gap including the surrounding watersheds and tributaries.
Delaware Water Gap Landuse: Pennsylvania
2000. United States Geological Survey (USGS). Landuse for the Delaware Water Gap and Surrounding watersheds and tributaries.
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
Digital Elevation Model - 10-Meter: Pennsylvania
1996. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
Digital Elevation Model - 30-Meter: Pennsylvania
1996. United States Geological Survey (USGS). Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...
Fault Lines - Topographic Change in Philadelphia, During the Last Century: Pennsylvania
2000. United States Geological Survey (USGS). A scope of work was developed in response to a request by the U. S. Army Corps of Engineers, Philadelphia District. The request was to perform a to...
Geographic Names Information System (GNIS) for Alaska and Hawaii 2008
2008. United States Geological Survey (USGS). The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey in cooperation with the U.S. Board on Geographic Names (BGN...
Geographic Names Information System (GNIS) for Pennsylvania
2007. United States Geological Survey (USGS). The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey in cooperation with the U.S. Board on Geographic Names (BGN...
Geographic Names Information System (GNIS) for Pennsylvania
1981. United States Geological Survey (USGS). The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey in cooperation with the U.S. Board on Geographic Names (BGN...
Geologic map - Topographic Change in Philadelphia, During the Last Century
2000. United States Geological Survey (USGS). A scope of work was developed in response to a request by the U. S. Army Corps of Engineers, Philadelphia District. The request was to perform a to...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
Historic topographic maps for Pennsylvania
2005. United States Geological Survey (USGS). Historic USGS 15 minute topographic maps for Pennsylvania as collected from the MapTech Historical Map Collection at '. Scanned map images from Map...
Historic topographic maps for Pennsylvania, Version 2 (Albers)
2006. United States Geological Survey (USGS). A newly revised version of the historic USGS 15 minute topographic maps for Pennsylvania as collected from the MapTech Historical Map Collection at...
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
2002. United States Geological Survey (USGS). The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The A...
2002. United States Geological Survey (USGS). Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production,...
National Assessment of Oil and Gas Project - Appalachian Basin Province (067) Boundary
2002. United States Geological Survey (USGS). The USGS Central Region Energy Team assesses oil and gas resources of the United States. The onshore and State water areas of the United States com...
National Atmospheric Deposition Program 2004 - Pennsylvania
2004. United States Geological Survey (USGS). The National Atmospheric Deposition Program/National Trends Network (NADP/NTN) is a nationwide network of precipitation monitoring sites. The netwo...
National Atmospheric Deposition Program 2005 - Pennsylvania
2005. United States Geological Survey (USGS). The National Atmospheric Deposition Program/National Trends Network (NADP/NTN) is a nationwide network of precipitation monitoring sites. The netwo...
National Elevation Dataset 30m County Mosaics for Pennsylvania
1999. United States Geological Survey (USGS). The U.S. Geological Survey has developed a National Elevation Dataset (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5...
National Land Cover Database 2001 - Imperviousness Layer - Pennsylvania and Northeast
2003. United States Geological Survey (USGS). The National Land Cover Database 2001 for mapping zone 47 was produced through a cooperative project conducted by the Multi-Resolution Land Charact...
National Land Cover Database 2001 - Imperviousness Layer - Southeast
2003. United States Geological Survey (USGS). The National Land Cover Database 2001 for mapping zone 47 was produced through a cooperative project conducted by the Multi-Resolution Land Charact...
National Land Cover Database 2001 - Imperviousness Layer - Western Pennsylvania and Ohio
2003. United States Geological Survey (USGS). The National Land Cover Database 2001 tree canopy layer for mapping zone 47 was produced through a cooperative project conducted by the Multi-Resol...
