Dams in Custer County, South Dakota
33Total Dams
7High Hazard
5Significant
Dam Safety in Custer County, South Dakota
Custer County has 33 dams tracked in the National Inventory of Dams. Of these, 7 are classified as high hazard — meaning failure would probably cause loss of human life. Another 5 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Custer County is 75 years old. The most common purpose is fire protection, stock, or small fish pond. The tallest dam is Center Lake Dam at 56 ft.
Explore more: Oldest dams in South Dakota · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Center Lake Dam | High | Fair | 56 | Recreation | 1935 |
| Stockade Lake Dam | High | Fair | 53 | Recreation | 1930 |
| Lakota | High | Not Rated | 47 | Recreation | 1962 |
| Bismark Lake | High | Not Rated | 40 | Recreation | 1937 |
| Legion Lake Dam | High | Fair | 38 | Recreation | 1934 |
| Sylvan Lake Dam | High | Fair | 37 | Recreation | 1906 |
| Custer West | High | Unsatisfactory | 13 | Recreation | 1943 |
| Gregorson No.1 | Significant | 34 | Fire Protection, Stock, Or Small Fish Pond | 1973 | |
| Rasmussen No.1 | Significant | 30 | Fire Protection, Stock, Or Small Fish Pond | 1943 | |
| Circle C No.2 | Significant | 30 | Fire Protection, Stock, Or Small Fish Pond | 1956 | |
| Smith No.1 | Significant | 28 | Fire Protection, Stock, Or Small Fish Pond | 1972 | |
| Streeter Dam | Significant | 22 | Fire Protection, Stock, Or Small Fish Pond | 1945 | |
| Triple 7 Ranch Dam | Low | 32 | Fire Protection, Stock, Or Small Fish Pond | 1963 | |
| M. Scism No.1 | Low | 28 | Irrigation | 1973 | |
| Brophy Big Dam | Low | 28 | Fire Protection, Stock, Or Small Fish Pond | 1945 | |
| Pat Brown | Low | 28 | Fish and Wildlife Pond | 1998 | |
| M. Scism No.2 | Low | 27 | Fire Protection, Stock, Or Small Fish Pond | 1946 | |
| County Line Dam | Low | 26 | Fire Protection, Stock, Or Small Fish Pond | 1945 | |
| C. Peterson | Low | 25 | Fire Protection, Stock, Or Small Fish Pond | 1958 | |
| Wilson Ranch Dam | Low | 24 | Fire Protection, Stock, Or Small Fish Pond | 1940 | |
| Harrison No.1 | Low | 23 | Fire Protection, Stock, Or Small Fish Pond | 1959 | |
| Triple Seven No.2 | Low | 23 | Fire Protection, Stock, Or Small Fish Pond | 1947 | |
| Evans No.1 | Low | 21 | Fire Protection, Stock, Or Small Fish Pond | 1951 | |
| Earl Witte No.1 | Low | 21 | Fire Protection, Stock, Or Small Fish Pond | 1960 | |
| G. Flier | Low | 19 | Irrigation | 1958 | |
| Barta Crooked Dam | Low | 19 | Fire Protection, Stock, Or Small Fish Pond | 1950 | |
| Englebrecht Dam | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1945 | |
| Triple Seven No.1 | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1947 | |
| Circle C No.1 | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1951 | |
| Ray E. Smith Dam | Low | 18 | Fire Protection, Stock, Or Small Fish Pond | 1954 | |
| Evans No.2 | Low | 15 | Fire Protection, Stock, Or Small Fish Pond | 1960 | |
| Schnose Dam No.2 | Low | 15 | Fire Protection, Stock, Or Small Fish Pond | 1947 | |
| Schnose Dam No.1 | Low | 14 | Fire Protection, Stock, Or Small Fish Pond | 1945 |