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Pennsylvania Spatial Data Access (PASDA)
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1. USGS Geopdfs for New Jersey
2014. U.S. Geological Survey. Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydro...
2. USGS Geopdfs for District of Columbia
2011. U.S. Geological Survey. Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydro...
3. USGS Geopdfs for Pennsylvania 30 x 60 Minute
2011. U.S. Geological Survey. GeoPDF 30 x 60 Minute Quadrangle Map for Pennsylvania.
4. USGS High Resolution Orthoimagery for Harrisburg, Pennsylvania
2011. U.S. Geological Survey. This data set consists of 0.3-meter pixel resolution (approximately 1-foot), natural color orthoimages covering the urban area footprint. An orthoi...
5. USGS High Resolution Orthoimagery for Harrisburg, Pennsylvania - Tile Index
2011. U.S. Geological Survey. TILE INDEX - 'This data set consists of 0.3-meter pixel resolution (approximately 1-foot), natural color orthoimages covering the urban area footpr...
6. United States Concise - Geographic Names Information System (GNIS)
2009. U.S. Geological Survey. The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS f...
7. United States Historic Features - Geographic Names Information System (GNIS)
2009. U.S. Geological Survey. The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS f...
8. United States Populated Places - Geographic Names Information System (GNIS)
2009. U.S. Geological Survey. The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS f...
9. Geographic Names Information System (GNIS) for Alaska and Hawaii 2008
2008. U.S. Geological Survey. The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey in cooperation with the U.S. Board on Geographic Names (BGN...
10. Zebra Mussel Distribution: United States
2008. U.S. Geological Survey. The concern caused by the explosive spread of the zebra mussel, (Dreissena polymorpha), within the United States resulted in passage of the Nonindi...