Blackfoot River (Idaho)
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The Blackfoot River is formed by the joining of Slug and Lanes creeks, in the Caribou-Targhee National Forest in Caribou County near Soda Springs, Idaho. It flows northwestward through Blackfoot River Reservoir (used for irrigation and flood control) and then west to join the Snake River in Bingham County after a course of about 95 miles (153 km). The headwaters for this river, Bear River, and the Portneuf River are in a few square miles of relatively flat valley bottom near Soda Springs, with the streams draining south into the Bear River, north to the Blackfoot River, and west to the Portneuf River.
The region the Blackfoot River flows through is covered in all its lowest portions with flows of basalt which had their origin in the Blackfoot-Gem Valley lava field. The Blackfoot River flows from open marsh and grass lands near its source into the Blackfoot Narrows. The Blackfoot Narrows traverses a desert canyon of primarily sagebrush and juniper habitat: an excellent place to view birds of prey. Fishing for trout is usually good. The river is named for the Blackfoot Indians even though they never lived in the area.
