What river begins in Lewis and Clark County outside of Missoula, Montana?
Blackfoot River (Montana) The Blackfoot River, sometimes called the Big Blackfoot River to distinguish it from the Little Blackfoot River, is a snow-fed and spring-fed river in western Montana. The Blackfoot River begins in Lewis and Clark County at the Continental Divide, 10 miles (16 km) northeast of the town of Lincoln (4536 feet, 1382 m). The river's headwaters are between Rogers Pass (5610 ft, 1710 m) to the north and Stemple Pass (6376 ft, 1943 m) to the south. It flows westward through the town of Milltown and enters the Clark Fork River approximately five miles (8 km) east of the city of Missoula (3210 ft, 978 m).
Sheep Creek (Bruneau River) Sheep Creek is a 63 mi long tributary of the Bruneau River. Beginning at an elevation of 6126 ft east of Owyhee in northern Elko County, Nevada, it flows generally north into Owyhee County, Idaho and the Owyhee Desert, where it is roughly paralleled by Idaho State Highway 51. It then flows to its mouth in the Bruneau – Jarbidge Rivers Wilderness, at an elevation of 3415 ft . In 2009, 25.6 mi of the creek were designated as wild by the Omnibus Public Land Management Act, which also created the Bruneau – Jarbidge Rivers Wilderness.