Description for the Clark Fork River Region 1This section covers the river from Missoula to Lake Pend Oreille.
The Clark Fork River begins near Butte, Montana and stretches through western Montana before emptying into Lake Pend Oreille in northern Idaho. The river is approximately 300 miles and is one of the longer rivers in Montana. The last stretch of the Clark Fork is a series of lakes created by several dams.
In years past, the Clark Fork fish population was devastated by the heavy metals flowing into it from the local mining industry centered around Butte. However, due to the Superfund Act, this river has made a solid recovery. The river now teams with rainbows, browns, and cutthroat and offers an excellent float for the fly fishing angler.