Middle Susquehanna River

About

Middle Susquehanna River, Pennsylvania — 1750s-1770s Frontier, 1840s-1880s Logging, 2010s Susquehanna Trail 90-mi. Long before European contact, the Middle Susquehanna threaded a densely settled Native homeland centered on Shamokin, a large multi-ethnic town at the confluence of the North and West Branches on the site of present-day Sunbury. Between 1727 and 1756 Shamokin was one of the largest and most influential Indian settlements in Pennsylvania — home in turn to the Susquehannock, the Shawnee, and the Lenape (Delaware) — and was overseen by the Oneida diplomat Shikellamy. Many Lenape resettled there after 1737, when the Walking Purchase stripped them of their eastern lands. The river was a travel corridor, fishing ground, and gathering place, linked westward to the Allegheny by the Great Shamokin Path. Its banks lay within the ancestral territory of the Lenape, the Susquehannock, the Shawnee, the Munsee, and the Iroquois Confederacy (Haudenosaunee).

The river's colonial chapter opened in 1756, when the British raised Fort Augusta at Sunbury to anchor the corridor during the French and Indian War. Upstream, the river's deep past lingers in the Standing Stone, a 25-foot gray sandstone monolith near Huntingdon thrown up by a prehistoric landslide some 8,000 to 10,000 years ago.

By the mid-1800s the waterway had become an industrial artery. For nearly seventy years the Middle Susquehanna served as the highway of Pennsylvania's timber wealth. The great Williamsport boom, begun in 1849, eventually grew to 352 stone-and-timber cribs — a seven-mile system devised by John Leighton, Major James Perkins, and John DuBois. Each year between 1850 and 1890 some 2,500 to 3,000 rafts carrying 150 to 200 million board feet of white pine ran the West Branch to be caught there. At the industry's height from 1861 to 1891 the district's mills cut roughly 5.5 billion board feet. Logs came down the Susquehanna, Pine Creek, and Sinnemahoning until the chestnut and pine old-growth was exhausted by 1910; the Susquehanna Boom Company disbanded in 1908, the boom was dismantled the following year, and the rise of state forestry closed the era.

Systematic measurement of the river began with the USGS Pennsylvania Survey of the 1880s–1910s. The Harrisburg gage (USGS 01570500), set on the east bank of City Island just below the Market Street bridge in Dauphin County, has recorded continuously since October 1890 — among the oldest stations in Pennsylvania's network — measuring runoff from 24,100 square miles upstream, with a concrete control in place since 1916. Later Pennsylvania streamflow surveys and water-quality studies documented the damage left by strip-mining and acid rain, and assessments under the Clean Water Act and the Chesapeake Bay TMDL Phase III have since turned the science toward restoring water quality across the watershed.

Since 2010 the PA DEP, working with Middle Susquehanna watershed partnerships, has labored to undo more than a century of logging, mining, agricultural, and industrial damage. The Middle Susquehanna Riverkeeper Association, founded in Sunbury in 2015, now monitors an 11,000-square-mile watershed. The heaviest inheritance is abandoned mine drainage from Pennsylvania's anthracite coalfields. Recent efforts have combined streambank stabilization, native restocking of brook trout and smallmouth bass, AMD remediation, and nutrient- and sediment-reduction targets — federal reclamation aid, flowing since 1977 under the Surface Mining Control and Reclamation Act, continues to underwrite the cleanup. In 2010 the Susquehanna River Water Trail expanded to span over 500 miles of navigable water across 22 counties, cementing this central-Pennsylvania reach as a living recreational corridor.