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More info on Clearwater River (Idaho)

Clearwater River (Idaho): Map

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Clearwater River near Greer Ferry
Map showing the Clearwater River watershed
The Clearwater River is a river in north central Idahomarker, which flows westward from the Bitterroot Mountains along the Idaho-Montanamarker border, and joins the Snake River at Lewistonmarker. In October 1805, the Lewis and Clark Expedition descended the Clearwater River in dugout canoes, putting in at "Canoe Camp," five miles (8 km) downstream from Orofinomarker. The Clearwater River is the largest tributary of the Snake River.

The drainage basin of the Clearwater River is . Its mean annual discharge is

Tributaries

The Clearwater breaks into several separate forks:



Clearwater River near Orofino, ID


River modifications

The Dworshak Reservoirmarker is the only major lake on the Clearwater system, created from the Dworshak Dammarker, completed in the early 1970s. Dworshak Dam is on the North Fork of the Clearwater River, and is just northwest of Orofinomarker. There is no fish ladder; the dam blocks salmon and steelhead passage.

History

The border between Washingtonmarker and Idahomarker was defined as the meridian running north from the confluence of the Clearwater River and the Snake River. Although this border is often referred to as the 117th west longitude meridian, the actual border line is slightly west (less than 2 miles) of the 117th meridian.

References



External links

  • , USGS GNIS



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