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Environment
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Geoscientific Information
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Pennsylvania Spatial Data Access (PASDA)
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1. Basins: Allegheny County, Pennsylvania
2002. Allegheny County Division of Computer Services Geographic Information Systems Group. 3 Rivers Wet Weather Demonstration Program Outreach Planning Basins.
2. NWI (National Wetlands Inventory): Allegheny County, Pennsylvania
2000. Allegheny County Division of Computer Services Geographic Information Systems Group. NWI (National Wetlands Inventory) digital data files are records of wetlands location and classification as defined by the U.S. Fish & Wildlife Ser...