Milner Dam impounds a river that is how long?
Milner Dam: Milner Dam is a rockfill dam near Burley in south central Idaho. Milner Dam:  It impounds the Snake River in a reservoir named Milner Lake. Snake River: The Snake River is a major river of the greater Pacific Northwest in the United States. Snake River:  At 1078 mi long, it is the largest tributary of the Columbia River, the largest North American river that empties into the Pacific Ocean.
1078 mi