Middle Susquehanna RIVERKEEPER® is dedicated to protecting, improving, and preserving the health of the Middle Susquehanna River Watershed, an approximate 11,000-square-mile area defined by the North and West Branches of the Susquehanna River, its tributaries, and drainage area. Residents of and visitors to the Middle Susquehanna River Watershed expect and deserve clean (swimmable, drinkable, and fishable) water.