Metolius River

The Metolius River is a tributary of the Deschutes River in central Oregon, near the town of Sisters. The river flows north from a spring near Black Butte, then turns east to join the Deschutes. The unincorporated community of Camp Sherman lies astride the southern end of the river.A possible explanation for the source of the river's water can be found in the region's volcanic origins. Evidence suggests that the river at one point emerged from the eastern flank of the Cascades mountains before the eruption of Black Butte buried the river channel. Now the water backs up into a marsh on one side of Black Butte before running through the volcanic tubes under the mountain and emerging on the other side as Metolius Spring.
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Deschutes National Forest
1645 U.S. 20 East
Bend, Oregon 97701
Designated Reach: October 28, 1988. From the Deschutes National Forest boundary to Lake Billy Chinook.
Classification/Mileage: Scenic -- 17.1 miles; Recreational -- 11.5 miles; Total -- 28.6 miles.
The Metolius is one of the largest spring-fed streams in the United States. It is a popular recreation area with whitewater boating, flyfishing, and camping. The lower river, adjacent to the Warm Springs Indian Reservation, is managed as a primitive area with no motorized access.