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1. Fish Consumption Advisories for the Susquehanna River Basin: Pennsylvania

2011. Susquehanna River Basin Commission (SRBC). Polyline shapefile representing streams in the Susquehanna River Basin that have a fish consumption advisory listing due to PCBs and/or mercury. Th...

2. Fish Species Occurrence Database: Pennsylvania

1998. Pennsylvania Fish and Boat Commission. Historical listing (1975-1995) of Pennsylvania fish species occurrences, as documented at 10,780 sampling points on streams and rivers throughout t...

3. Resource Lands Assessment - Water Quality Protection for the Chesapeake Bay Watershed

2000. Chesapeake Bay Program. Grid of the Chesapeake Bay Watershed with cell values representing relative value for the maintenance of water quality.

4. Spring Creek Watershed streams: Pennsylvania

1996. Environmental Resources Research Institute. Streams within the Spring Creek Watershed.

5. State Fish Hatcheries: Pennsylvania

2017. Pennsylvania Fish and Boat Commission. The Fish & Boat Commission operates thirteen (13) state fish hatcheries. Northern hatcheries (north of I-80) primarily culture warm/coolwater fish,...

6. 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...