More than half of the state lies within the watershed. Pennsylvania contains two major Bay watersheds: the Potomac, with 1,600 square miles; and the Susquehanna, with 21,000 square miles. Together, they total 40% of the entire watershed.

These Northern Pennsylvania Watershed groups are active in issues related to the Marcellus Shale gas drilling:


Bowman's Creek Watershed Association (www.bcwa.net)

Chillisquaque/Limestone Run Watershed Association 

Choconut Creek Watershed Association

Cowanesque Valley Watershed Association 

Ellen Run Watershed Projects

Friends of the Nescopeck (www.fon.orangewaternetwork.org/) 

Laning Creek Watershed Association

Little Shamokin Creek Watershed Association 

Martins Creek Watershed Association

Mehoopany Creek Watershed Association (www.mehoopany.org) 

Meshoppen Creek Task Force

Middle Anthracite Watershed Assoc. 

PA CleanWays (www.pacleanways.org)

Penn York Bentley Creek Watershed Association 

Pennsylvania Council of Trout Unlimited (www.patrout.org)

Roaring Creek Valley Conservation Association 

Satterlee Creek Watershed Association

Seeley Creek Watershed Association

Snake Creek Watershed Association 

The Earth Conservancy (www.earthconservancy.org) 

Tioga County Concerned Citizens Committee 

Towanda Creek Watershed Association

Upper Susquehanna Coalition (www.u-s-c.org)

Upper Tunkhannock Creek Watershed Association

Wysox Creek Watershed Association