Angostura Reservoir is a water-lover's haven with breathtaking, scenic views. Offering crystal clear waters, 36 miles of shoreline, and some of the finest sandy beaches in the state, the area boasts many water sports and summer fun activities - camping, boating, fishing, and swimming.
Its strong fishery is well known for its walleye, smallmouth bass, crappie, and also supports northern pike, largemouth bass, perch and bluegill.
The word "angostura" is Spanish for "narrows"
Angostura is one of the few large reservoirs in western South Dakota. The dam was built in 1949 by the Bureau of Reclamation across the Cheyenne River for irrigation purposes.
The average depth of this reservoir is 29 feet and the deepest portion of the pool is 75 feet deep when full. The lake's average summer temperature is 66 degrees F.