Soda Dam

Soda Dam, also known as Alexander Dam, is a dam in Caribou County, Idaho, directly west of the town of Soda Springs.

The concrete dam was originally constructed in 1925, with a current height of 94 ft and a length of 492 ft at its crest, since a 1991 re-construction. It impounds Bear River for hydroelectric power, one of the hydropower facilities owned and operated by the electric utility PacifiCorp.

The reservoir it creates, Alexander Reservoir, has a normal water surface of 1.9 mi2, a maximum capacity of 15,760 acre-feet, and a normal capacity of 15,200 acre-feet. Recreation includes fishing, canoeing, and birdwatching.