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Author
- ALLIANCE for Aquatic Resource Monitoring1
- Allegheny County Division of Computer Services Geographic Information Systems Group3
- Chesapeake Bay Program4
- ChoptankRiverHeritage.org1
- City Planning Commission (PCPC) Department - GIS Division3
- City of Philadelphia2
- City of Philadelphia - PWD2
- City of Philadelphia Water Department - Information Systems Technology1
- David Homans1
- David Homans, Pennsylvania Natural Heritage Program3
- Delaware River Basin Commission (DRBC)27
- Environmental Resources Research Institute8
- Environmental Resources Research Institute Eastern Pennsylvania Coalition for Abandoned Mine Reclamation (EPCAMR)1
- Federal Emergency Management Agency1
- Heritage Conservancy3
- Karen Kwasnowski1
- Loree Speedy, Western Pennsylvania Conservancy1
- Maryland Historical Trust (MHT)1
- Natural Lands Trust1
- Natural Lands Trust with input data from PA DEP.2