at the entrance to Beaverhead Canyon Gateway, just south of Barretts, MT. Some more of the area in my video: [ youtube video ] The Gateway takes you along the Beaverhead River to where it starts at the Clark Canyon Reservoir and then you follow the Red Rock River (it starts at the Centennial Mountains). There are mountains on both sides of the ever changing width and depth of the Valley.

The Red Rock River enters Lima Reservoir sixty miles from its origin. Below Lima Dam, the river becomes more popular and somewhat more accessible, as more county bridges cross the river. The flows increase in this section, allowing for decent floating. Cottonwood trees line the bank, providing a stark contrast to the arid and somewhat barren landscape away from the river. The fly fishing also improves with colder water and increased flows.

The Red Rock River flows for more than fifty miles through similar country below the dam before entering the Clark Canyon Reservoir. The Beaverhead River begins just below the dam.