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Bighorn River near Fort Smith, Montana

The studies contained here are companion studies for the Bighorn River near Ft. Smith MT. The study reach is the first 16 miles downstream of Yellowtail Dam. The primary focus of the two studies is the recent loss of side channel habitat within the study reach. The geomorphic analysis focuses on the geology of the floodplain and the geomorphic history of the Bighorn River, including changes in planform and channel morphology. The hydraulic and sediment transport analysis focuses on sediment transport within the reach, particularly within the side channels. Recommendations are made in the hydraulic and sediment transport analysis for ecological releases from Yellowtail Dam for the purpose of improving the aquatic and riparian habitat.