Located about 28 miles (45 km) southwest of Twin Falls, the concrete arch dam is 217 feet (66 m) high and 450 feet (140 m) long, impounding up to 230,650 acre-feet (0.28450 km3) of water in Salmon Falls Creek Reservoir.

[1] When full, the reservoir extends for 17 miles (27 km) upstream, encompassing 3,400 acres (1,400 ha).

[1] The dam was built in 1910 to provide irrigation water storage, and is owned and operated by the Salmon River Canal Company.

Salmon Falls Creek Reservoir is also a popular recreational lake, and is considered one of the best fisheries in southern Idaho.

[6] The Salmon Falls Dam was listed on the National Register of Historic Places in 2009.