Umpqua River, South Fork

About

South Umpqua River, Oregon — 1826 Peter Skene Ogden, 1840s-1880s Mining, 1990s-2010s Umpqua Trail 95-mi. Long before that survey, the river flowed through the homeland of the Cow Creek Band of Umpqua Tribe of Indians, who lived between the Cascade and Coast ranges along the river and its principal tributary, Cow Creek. Highly mobile, they held the wider Umpqua watershed as home ground, ranging north into the Willamette Valley and east toward Crater Lake and the Klamath Marsh to trade, hunt, fish, and gather. On September 19, 1853, the Cow Creek band became one of the first two tribes in Oregon to sign a treaty with the United States, negotiated on Cow Creek by superintendent of Indian Affairs Joel Palmer with principal chief Quintioosan, or Bighead. The U.S. Senate ratified it on April 12, 1854. The agreement ceded more than 800 square miles of southwestern Oregon for roughly 2.3 cents an acre, leaving the tribe landless — a loss largely ignored until the Western Oregon Indian Termination Act of 1954, with federal recognition restored in 1982.

Timber drove the local economy from the 1860s through the 1920s, as small operators cut Douglas-fir, ponderosa pine, oak, and madrone from the foothills and built sawmills on nearly any stream with enough water to power a saw. The railroad's arrival at Roseburg in 1873, and its connection to California in 1887, opened distant markets and quickened the clearing of the lower hillsides. By the turn of the century loggers had largely stripped the accessible foothills, and horse teams had gouged skid roads toward the remaining old-growth. Larger interests such as Roseburg Lumber consolidated the surrounding forestlands, and federal timber from the upper watershed fed mills in Roseburg, Winston, Riddle, Glendale, and Sutherlin. The era's cut-and-move-on practices left slash heaps and scoured banks that restoration crews would spend decades repairing.

Systematic measurement began with the U.S. Geological Survey in the early 1900s. The Survey established gauge 14312000 near Brockway, downstream of Roseburg, draining 1,670 square miles of the basin, and it recorded discharge in broken spans from 1906 to 1912, 1924 to 1927, and 1942 to 2002; a companion station upstream at Tiller carried the record into the headwaters. In 1991 the USGS measured stream velocities and reaeration coefficients along the reach between Tiller and Roseburg to model how the warm, slow summer river processes dissolved oxygen and pollutants — data that later underpinned Oregon DEQ's Umpqua Basin Total Maximum Daily Load program.

Since roughly 2010, recovery has centered on water quality and salmon habitat rather than timber. The Partnership for the Umpqua Rivers — the watershed council formerly known as the Umpqua Basin Watershed Council — has led streambank stabilization, riparian planting, and fish-passage work across the basin. Oregon DEQ's Umpqua Basin temperature TMDL, replaced by the U.S. EPA on June 27, 2025, guides efforts to cool a river warmed by a century of logging and agriculture. The South Fork is a coho recovery priority: the state's South Fork Umpqua River and Tributaries Conservation Opportunity Area, a 224-square-mile zone, focuses collaborative restoration on the declining coho population, alongside the fall and spring Chinook, summer and winter steelhead, and anadromous cutthroat trout that share the 3.24-million-acre Umpqua Basin.

Managed in part by the Bureau of Land Management, the South Fork still offers paddling as well as fishing. Through its upper reaches, the Three Falls run is a mellow float punctuated by several big, clean drops — among them South Umpqua Falls and the plunge paddlers call the 'Hand of God' — with whitewater across the corridor rated Class II to VI. Downstream the river runs 81 miles to its meeting with the North Umpqua northwest of Roseburg, where the two form the 111-mile Umpqua proper.