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- U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details).22
- SRBC9
- Environmental Resources Research Institute5
- Allegheny County Division of Computer Services Geographic Information Systems Group3
- City Planning Commission (PCPC) Department - GIS Division3
- David Homans, Pennsylvania Natural Heritage Program3
- Heritage Conservancy3
- Pennsylvania Department of Environmental Protection3
- U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency3
- City of Philadelphia2
- City of Philadelphia - PWD2
- Office of Water Management, Bureau of Water Supply & Wastewater Management, Water Quality Assessment and Standards Division.2
- Pennsylvania Fish and Boat Commission2
- USGS2
- ALLIANCE for Aquatic Resource Monitoring1
- David Homans1
- Karen Kwasnowski1
- Office of Remote Sensing for Earth Resources, Penn State University1
- Ohio River Valley Water Sanitation Commission1
- PA Fish and Boat Commission1