South Fork Clearwater River


The South Fork Clearwater River is a long river in north-central Idaho in the United States. Draining about, the South Fork joins with the Middle Fork Clearwater River to form the Clearwater River, a major tributary of the Snake River.
The river is formed by the confluence of the American River and Red River in the Nez Perce National Forest at an elevation of. The roughly American River rises at and flows generally south to the confluence, while the northwest flowing Red River, rising at, is about long. The American River is sometimes considered part of the main stem. From the confluence the South Fork flows west through a canyon followed by Idaho State Highway 14, receiving the Crooked River from the left and Newsome Creek from the right before reaching Golden, where it receives Tenmile Creek from the left. Further west the river receives Johns Creek from the left, Meadow Creek from the right and Mill Creek from the left, and the gorge deepens to a maximum of some as the river swings north near Grangeville. From there the river flows generally north, past Harpster and Stites, before reaching its mouth on the Clearwater at Kooskia, at an elevation of.
Grangeville Dam was built on the South Fork in 1910 for hydroelectricity generation. In 1963, the dam was demolished, restoring the river's populations of Chinook salmon and steelhead trout. Today, the entire South Fork and its headwater tributaries are free flowing and unobstructed by dams or major diversions.