North Branch Susquehanna River

North Branch Susquehanna River
Nicholas A. Tonelli from Northeast Pennsylvania, USA · CC BY 2.0 · source
Name	North Branch Susquehanna River
Length	444 km (276 mi)
Source	Confluence of East and West Branches near Dwyer Gap
Mouth	Confluence with West Branch Susquehanna River at Sunbury
Basin countries	United States
Basin size	14,000 sq mi

North Branch Susquehanna River The North Branch Susquehanna River is the chief tributary of the Susquehanna River, rising in the Allegheny Plateau and flowing through Wyoming County, Bradford County, Susquehanna County and Lycoming County before joining the West Branch at Northumberland County. The river's watershed touches parts of New York and Pennsylvania, and its drainage has profoundly influenced settlement patterns around Binghamton, Wilkes-Barre, and Scranton.

Course and Geography

The North Branch originates near the confluence of tributaries in the Allegheny Plateau and runs generally southwest past towns such as Montrose, Towanda, Waverly and Pittston before reaching Sunbury. Along its course it receives major inflows from the Chemung River, Tioga River, Lackawanna River, Wyoming Valley tributaries and smaller streams draining the Catskill Mountains foothills and the Appalachians. The valley encompasses features like the Endless Mountains, the Allegheny Front, and glacially formed terraces; infrastructure crossings include bridges near I-86, I-81, U.S. Route 11, and the Pennsylvania Turnpike. The watershed borders municipal entities such as Bradford County, Tioga County, Bradford County and municipalities including Sayre and Athens.

Hydrology and Water Quality

Hydrologic studies by agencies including the United States Geological Survey and the Pennsylvania Department of Environmental Protection document seasonal flow variability influenced by Snowmelt in the Catskills and storm events associated with Hurricane Agnes and Tropical Storm Lee. The North Branch's discharge is monitored at gauges near Montoursville, Towanda and Waverly, with records used by Federal Emergency Management Agency for floodplain mapping. Water quality has been impaired historically by acid mine drainage from anthracite mining in the Coal Region, industrial effluents from facilities associated with corporations like Bethlehem Steel and municipal sewage discharges regulated under the Clean Water Act. Remediation initiatives have involved partnerships among the Susquehanna River Basin Commission, the National Oceanic and Atmospheric Administration, the U.S. Environmental Protection Agency, and local watershed associations in projects addressing nutrient runoff from agriculture in Lycoming County and sedimentation from timber harvests overseen by the United States Forest Service.

History and Human Use

Indigenous nations including the Iroquois Confederacy, Susquehannock, and Lenape used the river corridor for travel and trade prior to European contact. Colonial and early American history along the North Branch involved settlement by figures connected to William Penn, land disputes adjudicated by colonial courts and later the Pennsylvania General Assembly, and transportation developments such as the Delaware and Hudson Canal era and the advent of railroads like the Lehigh Valley Railroad and the Pennsylvania Railroad. The river provided power and water for industries including lumber mills tied to entrepreneurs from Binghamton and textile mills in Wilkes-Barre; navigation was modified by lock and dam systems similar to those operated on the Ohio River and influenced by engineering practices promoted by the U.S. Army Corps of Engineers. Significant flood events—such as those following Hurricane Agnes—shaped urban renewal policies enacted by municipal governments in Scranton and prompted flood control projects funded through federal programs like those administered by the Federal Emergency Management Agency.

Ecology and Wildlife

The river corridor supports riparian habitats hosting species documented by organizations like the National Audubon Society and the Pennsylvania Game Commission. Fish assemblages include migratory populations historically of American shad, alewife, and native brook trout in tributaries such as the Tunkhannock Creek and Towanda Creek; stocked and resident species include smallmouth bass and walleye popular with anglers associated with clubs like the Izaak Walton League. Wetlands and floodplain forests along the North Branch harbor birds including bald eagle, great blue heron, and neo-tropical migrants protected by programs under the U.S. Fish and Wildlife Service and local chapters of the Audubon Society. Conservation concerns feature invasive species such as zebra mussel and aquatic plants monitored by the New York State Department of Environmental Conservation and Pennsylvania counterparts, while habitat restoration projects collaborate with groups like the Sierra Club and local land trusts.

Recreation and Management

Recreational use includes boating, fishing, and riverfront trails managed by agencies and nonprofits such as the Pennsylvania Fish and Boat Commission, the Susquehanna Greenway Partnership, and municipal parks departments in towns like Endless Mountains Regional communities, Montrose and Bloomsburg. Canoe and kayak routes connect to trails promoted by regional tourism bureaus and outfitter services near Ricketts Glen State Park and the Lackawanna State Park area; hunting and wildlife viewing occur on state game lands administered by the Pennsylvania Game Commission. Management of water resources involves the Susquehanna River Basin Commission, interstate compacts, and state agencies coordinating floodplain zoning with planning commissions in counties such as Lycoming County and Bradford County. Educational programming and citizen science initiatives are run by universities including Bucknell University, Penn State University, and community colleges, and by organizations like the Chesapeake Bay Foundation addressing nutrient reductions to benefit downstream estuaries including the Chesapeake Bay.

Category:Rivers of Pennsylvania Category:Rivers of New York (state)