Salmon Falls Dam

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Salmon Falls Dam is a dam constructed across Salmon Falls Creek in Twin Falls County, Idaho in the United States. Located about 28 miles (45 km) southwest of Twin Falls, the masonry arch-gravity 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). The dam and reservoir control runoff from a drainage basin of 1,610 sq mi (4,200 km2).
The dam was built in 1910 to provide irrigation water storage, and is owned and operated by the Salmon River Canal Company. A secondary purpose is flood control: the dam has spilled floodwaters twice, in 1984 and 2017. Salmon Falls Creek Reservoir is also a popular recreational lake, and is considered one of the best fisheries in southern Idaho.