Salmon River (Idaho) plans are under legal challenge. The United States Geological Survey operates four stream gauge water level monitoring stations on the main stem of the Salmon River and 17 others on its tributaries. Real time data is available for each station on the USGS website. For a map of these see or in the box at right. Salmon River (Idaho) The Salmon River is located in Idaho in the northwestern United States. The Salmon is also known as "The River of No Return". It flows for through central Idaho, draining a rugged, thinly populated watershed of and dropping more than between
Salmon River (Idaho) river. ...The Westerly fork of the Columbia River [the present Salmon River] is double the size of the Easterley fork [the present Lemhi River] & below those forks the river is ... wide, it is very rapid & Sholey water Clear but little timber. The honor didn't last long; by 1810, maps of the area were already referring to "Louis' River" as the Salmon. Clark had thought that the Salmon River was the Snake River, thus he called it the "Westerly fork of the Columbia". The Snake River retained the variant name "Lewis River" or "Lewis Fork" longer than did