Clearwater River (Idaho)

Clearwater River (Idaho) is a major tributary of the Snake River in north-central Idaho. Formed by the confluence of the Middle Fork Clearwater River and the Selway River near the town of Kooskia, it flows westward for approximately 75 miles before joining the Snake River at Lewiston. The river drains a rugged, forested basin within the Bitterroot Range and is renowned for its historical significance to the Nez Perce people, its role in the Lewis and Clark Expedition, and its world-class steelhead and Chinook salmon fisheries.

Course

The Clearwater River originates at the confluence of the Middle Fork Clearwater River and the Selway River in the Clearwater National Forest. It flows generally west through a deep, winding canyon, passing the communities of Kooskia, Stites, and Kamiah. The river is impounded by Dworshak Dam, which creates Dworshak Reservoir, one of the largest reservoirs in Idaho. Downstream from the dam near Orofino, the river continues west, receiving flow from the North Fork Clearwater River before emerging onto a broader valley. It passes through the Nez Perce Indian Reservation and finally meets the Snake River at the twin cities of Lewiston and Clarkston, which are named for Meriwether Lewis and William Clark.

History

The Clearwater River basin is the ancestral homeland of the Nez Perce people, who have lived along its banks for millennia. In 1805, the Lewis and Clark Expedition reached the river after a difficult crossing of the Bitterroot Mountains, constructing the Canoe Camp near present-day Orofino to build dugout canoes for their journey to the Pacific Ocean. The 1855 Treaty of Walla Walla and the controversial 1863 Treaty with the Nez Perce, also known as the "Steal Treaty," significantly reduced Nez Perce lands, leading to the Nez Perce War of 1877. The river later became a vital corridor for gold rush miners and loggers, with steamboats navigating to Pierce during the 1860s. In the 20th century, the construction of Dworshak Dam by the U.S. Army Corps of Engineers was completed in 1973, fundamentally altering the river's flow and ecology.

Ecology and conservation

The Clearwater River system is a critical habitat for anadromous fish, particularly Chinook salmon and steelhead, which migrate from the Pacific Ocean to spawn in its tributaries. The construction of Dworshak Dam and other barriers on the Columbia River system has severely impacted these populations, leading to their listing under the Endangered Species Act. Conservation efforts are managed by agencies like the Nez Perce Tribe Department of Fisheries Resources Management, the Idaho Department of Fish and Game, and the U.S. Fish and Wildlife Service. These include hatchery programs, habitat restoration projects, and complex negotiations over water rights and dam operations involving the Bonneville Power Administration and the Northwest Power and Conservation Council.

Recreation

The Clearwater River and its tributaries are premier destinations for outdoor recreation. The river is famous for its steelhead and Chinook salmon fishing, attracting anglers from around the world. Popular access points include the Clearwater River Trail and areas around Orofino and Ahsahka. Dworshak Reservoir offers boating, camping, and kokanee salmon fishing. The surrounding Clearwater National Forest and Nez Perce-Clearwater National Forests provide extensive opportunities for whitewater rafting on the Lochsa River and Selway River, hiking, hunting, and wildlife viewing. Historical sites like the Heart of the Monster at Kamiah and the Lewis and Clark Trail are also major attractions.

Tributaries

Major tributaries of the Clearwater River are listed from source to mouth. The principal headwater forks are the Middle Fork Clearwater River and the Selway River. Other significant tributaries include the Lochsa River, which joins the Selway River to form the Middle Fork Clearwater River near Lowell. The largest tributary joining the main stem is the North Fork Clearwater River, which enters near Orofino downstream from Dworshak Dam. Other notable creeks and rivers feeding the Clearwater include Jim Ford Creek, Big Canyon Creek, Potlatch River, Lapwai Creek, and Moscow's Paradise Creek.

Category:Rivers of Idaho Category:Tributaries of the Snake River Category:Clearwater River (Idaho)