North Branch Potomac River

About

North Branch Potomac River, Maryland — 1980 Trout, 1700s-1880s Coal, 1990s-2010s N Branch Potomac Trail 100-mi Westernport. The paddling story starts at the gauge. USGS station 01603000 reports a long-term average of about 1,313 cfs, and the optimal window on the North Branch runs from roughly 650 to 1,950 cfs — a band wide enough to fish and float through much of the release season. American Whitewater documents a run between Westernport and Keyser; its guidance notes that the dam portage and the ugly stretch of river around an abandoned paper mill can be avoided by putting in 2.1 miles downstream at Westernport. Those flows are not natural. They are scheduled with the seasons, serving double duty for flood control and recreation.

The river itself runs 64 miles through Garrett County and Allegany County in western Maryland. Its watershed drains 1,400 square miles of West Virginia and western Maryland, flowing northeast to join the South Branch and form the Potomac's main stem. The North Branch is one of two branches of the Potomac and is usually thought of as the river's main stem. As a tributary of the Potomac, its watershed is a key part of the larger Chesapeake Bay watershed.

Human use here is old and layered. Before European contact, the North Branch flowed through the ancestral territory of Indigenous peoples, serving as a primary travel corridor, hunting ground, and gathering place; the 1800s-era treaties, the 1830 Indian Removal Act, and the 1840s–1890s allotment era established the cession framework that displaced them. Extraction defined the next chapters. The 1700s–1880s were the coal era. From the 1830s through the 1920s the watershed was logged to feed the regional timber industry and railroad expansion, worked by local sawmills and logging drives until the 1910 exhaustion of the old-growth stands, the 1915 start of state forestry conservation, and the 1930s establishment of state forests brought large-scale cutting to an end.

Science arrived alongside the industry. The 1870s–1890s USGS survey and the 1880s–1910s gauging-station establishment produced the first comprehensive hydrological studies of the river, followed by 1910s–1930s state geological streamflow assessments. The 1950s–1970s state water pollution control studies and the 1972–2000 Clean Water Act assessments confronted more than a century of logging, agricultural, and industrial impacts, feeding into the modern restoration and TMDL programs that guide management today.

Recovery has been deliberate. The cold-water releases begun in the 1990s improved habitat for cool- and cold-water species, among them the native brook trout. Since 2010, Maryland DNR, working with local watershed partnerships, has pushed the effort further — 2015–2024 streambank stabilization, 2017–2024 native fish restocking, 2018–2024 nutrient reduction strategy implementation, and 2020–2024 water-quality improvements. The result is a restored cold-water fishery where engineered flows and recovering ecology meet, a river that today supports the Westernport, Keyser, and Luke economies and carries a Designated Water Trail under the National Park Service as part of the Potomac River Water Trail. The North Branch is also home to the North Branch Potomac River State Wild River and the Westernport Historic District — reminders that on this river, restoration and industrial heritage share the same banks.