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Targeting the Most Impaired Watersheds

The Department of Environmental Protection has targeted the most impaired watersheds in Pennsylvania’s Chesapeake Bay watershed where we can have the most impact by working with a number of partners and stakeholders. Click on the map below to see highlights of the water quality improvement projects that have received funding support from Pennsylvania’s Growing Greener, the U.S. Environmental Protection Agency’s 319 program, and the National Fish and Wildlife Foundation (NFWF) grant funds.

These watersheds are determined by DEP’s 2014 Regional Agricultural Watershed Assessment Program Initiative, and 2016 Integrated Water Quality Report (303(d) list). DEP focuses state and federal funding and special attention on these watersheds in an effort to restore clean water in a designated time period by utilizing a holistic approach to all of the waters in the watershed.

Some of the factors assessed when determining the recoverability of a watershed include: local watershed organization involvement, general public interest in the watershed, public water supply recharge areas, involvement from other programs/agencies, watershed size, level and complexity of the impairment, ability of the local area to maintain restoration, willingness of landowners to participate, and the strength of the local stream monitoring effort.

For general assistance with this map, or to learn more about the programs and projects listed on the map, please contact the Division of Water Quality Standards at 717-787-9637, or send email to