Author
- USGS2
- ALLIANCE for Aquatic Resource Monitoring1
- ChoptankRiverHeritage.org1
- City of Philadelphia Water Department - Information Systems Technology1
- David Homans1
- Environmental Resources Research Institute Eastern Pennsylvania Coalition for Abandoned Mine Reclamation (EPCAMR)1
- Federal Emergency Management Agency1
- Karen Kwasnowski1
- Loree Speedy, Western Pennsylvania Conservancy1
- Maryland Historical Trust (MHT)1
- Office of Remote Sensing for Earth Resources, Penn State University1
- Office of Water Management, Bureau of Point and Non-Point Source Management, Division of Water Quality Standards1
- Office of Water Management, Bureau of Point and Non-Point Source Management, Division of Water Quality Standards.1
- Ohio River Valley Water Sanitation Commission1
- PA Department of Environmental Protection1
- PA Fish and Boat Commission1
- Penn State Institutes of the Environment. The Pennsylvania State University. Research Triangle Institute (RTI)1
- Pennsylvania Natural Heritage Program1
- Philadelphia City Planning Commission1
- Philadelphia Water Department1