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1. 104 State Water Plan Watersheds: Pennsylvania

1998. Environmental Resources Research Institute. Digitized boundaries of 104 major watersheds defined in the Pennsylvania state water plan. The State Water Plan, originally developed in the 1970s,...

2. 3.75-Minute Quarter Quadrangle Boundary: Pennsylvania

2003. Pennsylvania Spatial Data Access. Index of USGS quarter-quadrangles (3.75 minute) covering Pennsylvania. The polygons are attributed with information pertaining to the USGS/PaGS Dig...

3. Active Underground Permit Boundaries: Pennsylvania

2018. Pennsylvania Department of Environmental Protection, Bureau of District Mining Operations. Pennsylvania state law requires those who wish to conduct mining activities within the Commonwealth submit and get approval by the Pennsylvania Dep...

4. Boundary: Chester County, Pennsylvania

2011. Chester County DCIS/GIS. This dataset contains the county outline (boundary) polygon for Chester County, PA.

5. Boundary: Lancaster County, Pennsylvania

2008. The data describes the boundary of the Lancaster County.

6. Census Block Groups: Philadephia, Pennsylvania

2010. U.S. Department of Commerce, U.S. Census Bureau, Geography Division. The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from ...

7. Census Tracts: Philadephia, Pennsylvania

2000. Philadelphia City Planning Commission (PCPC) Department - GIS Division. Census bureau statistical units. Most commonly used statistical unit. This version, released January 2004 contains a fix, replacing tract 172 which...

8. Chesapeake Bay region state boundaries

1996. Penn State ORSER/ERRI. Boundaries for the states in the Chesapeake Bay region.

9. Congressional Boundaries (Act 34): Pennsylvania

2018. Pennsylvania Department of Transportation, Bureau of Planning and Research, Cartographic Information Division. United States Congressional legislative boundaries within Pennsylvania as set forth in Act 34 of 2002. This layer was digitized by PADOT from maps ...

10. Councils of Government: Allegheny County, Pennsylvania

2008. Allegheny County Division of Computer Services Geographic Information Systems Group. Data was created to portray the boundaries of the Councils of Government (COG's) in Allegheny County.