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Compressed Digital Spatial Data Available for Downloading

• General Metadata (description of datasets, 43,106 bytes)
• Related INFO file of basin information (205,217 bytes, expands to 0.7Mb)

• North Branch Susquehanna River (3,474,542 bytes, expands to 7.0Mb)
• West Branch Susquehanna River (9,514,737 bytes, expands to 19.3Mb)
• Lower Susquehanna River (14,173,320 bytes, expands to 28.4Mb)
• Delaware River (6,169,201 bytes, expands to 12.5Mb)
• St. Lawrence River (765,882 bytes, expands to 1.5Mb)
• Potomac River (2,840,303 bytes, expands to 5.7Mb)
• Allegheny River (12,978,267 bytes, expands to 26.3Mb)
• Monongahela River (3,329,458 bytes, expands to 6.8Mb)
• Ohio River (4,925,999 bytes, expands to 10.0Mb)
• Select from Imagemap instead?

• Adams County (885,577 bytes, expands to 1.8Mb)
  • metadata (85,903 bytes)
• Chester County
  • polygons (282,657 bytes, expands to 661,983 bytes) metadata
  • faults (30,791 bytes, expands to 70,295 bytes) metadata
  • dikes (33,763 bytes, expands to 81,302 bytes) metadata

• Hydrologic Atlas HA-523 (Flood of June 1972 in Wilkes-Barre Area, Pennsylvania)
  • ArcInfo Coverage (673,000 bytes)
  • Shapefile (216,000 bytes)
  • Ungenerated (990,000 bytes)
  • Metadata txt (12,800 bytes)
  • Metadata htm (50,100 bytes)

Links to other online sources for Pennsylvania data

• Map FAQ
• Emap PA - Online viewable map of Pennsylvania -- includes watersheds, flood plains, mining, caves, and sinkholes
• Pennsylvania Spatial Data Access (PASDA) uses ArcExplorer click to download from ESRI for free
• USGS Topographic Quadrangles via Penn State University (zipped tiff format)
• USGS aerial photograph maps (ortho-photo quads) and more, via USGS/Microsoft Terraserver
• To Purchase USGS Products (maps, photos, etc.)
• USGS GIS Data for use with GIS and mapping programs
• Availability of USGS Geospatial Data and Aerial Photography Products
• The National Atlas - A Partnership led by USGS