Tallest Dams in South Dakota
South Dakota has 2541 dams with recorded heights. The tallest is Grizzly Gulch Tailings Dam at 380 feet. Taller dams impound more water and carry greater potential energy, which is why height is a key factor in hazard classification and inspection requirements.
| # | Dam | County | Height (ft) | Type | Purpose | Hazard | Year |
|---|---|---|---|---|---|---|---|
| 1 | Grizzly Gulch Tailings Dam | Lawrence | 380 | Earth | Tailings | High | 1998 |
| 2 | Oahe Dam - Fort Yates Flood Protection Project | Sioux | 245 | Earth | Flood Risk Reduction | High | 1966 |
| 3 | Big Bend Dam | Lyman | 205 | Earth | Flood Risk Reduction | High | 1963 |
| 4 | Angostura Dam | Fall River | 193 | Concrete | Irrigation | High | 1949 |
| 5 | Deerfield Dam | Pennington | 171 | Earth | Fish and Wildlife Pond | High | 1947 |
| 6 | Fort Randall Dam | Charles Mix | 170 | Earth | Flood Risk Reduction | High | 1954 |
| 7 | Shadehill Dam | Perkins | 145 | Earth | Flood Risk Reduction | High | 1951 |
| 8 | Sheridan Lake | Pennington | 134 | Earth | Recreation | High | 1939 |
| 9 | Cold Brook Dam | Fall River | 130 | Earth | Flood Risk Reduction | High | 1953 |
| 10 | Cottonwood Springs Dam | Fall River | 123 | Earth | Flood Risk Reduction | High | 1969 |
| 11 | Belle Fourche Dam | Butte | 122 | Earth | Irrigation | High | 1911 |
| 12 | Pactola Dike 1 | Pennington | 115 | Earth | High | 1956 | |
| 13 | Highway 44 #6 | Mellette | 102 | Earth | Other | Significant | 1973 |
| 14 | Buffalo Lake Road Dam 1 | Ziebach | 95 | Earth | Recreation | Significant | 1961 |
| 15 | Highway Dept. #3 | Mellette | 91 | Earth | Other | Significant | 1970 |
| 16 | Buffalo Lake Road Dam 2 | Meade | 82 | Earth | Recreation | Significant | 1961 |
| 17 | Richmond Hill | Lawrence | 79 | Earth | Flood Risk Reduction | Low | 1988 |
| 18 | Beckwith Dam | Haakon | 75 | Earth | Fire Protection, Stock, Or Small Fish Pond | Low | 1977 |
| 19 | Gavins Point Dam - Yankton Dam | Yankton | 74 | Earth | Flood Risk Reduction | Low | 1958 |
| 20 | Randall Rc&d Ca-176-gr | Gregory | 69 | Earth | Grade Stabilization | Low | 1976 |
| 21 | Sargent Irrigation Dam | Tripp | 67 | Earth | Irrigation | Low | 1972 |
| 22 | Wild Rice Creek No. 3 | Marshall | 66 | Earth | Flood Risk Reduction | Low | 1961 |
| 23 | Marty Mission | Charles Mix | 65 | Earth | Flood Risk Reduction | Low | 1938 |
| 24 | Horsethief Lake | Pennington | 65 | Earth | Recreation | High | 1940 |
| 25 | Spring-bull 1 | Charles Mix | 64 | Earth | Flood Risk Reduction | Significant | 1973 |
| 26 | Garrett Dam | Sully | 64 | Earth | Fire Protection, Stock, Or Small Fish Pond | Low | 1980 |
| 27 | Logan Thoene No.1 | Gregory | 63 | Earth | Irrigation | Low | 1975 |
| 28 | Oglala | Oglala Lakota | 62 | Earth | Recreation | High | 1941 |
| 29 | Waterbury Dam | Gregory | 60 | Earth | Fire Protection, Stock, Or Small Fish Pond | Low | 1976 |
| 30 | Highway Dept. #2 | Mellette | 60 | Earth | Other | Significant | 1970 |
| 31 | Lowell West Dam | Sully | 60 | Earth | Fire Protection, Stock, Or Small Fish Pond | Low | 1976 |
| 32 | Bak #1 | Mellette | 59 | Earth | Other | Significant | 1970 |
| 33 | Marindahl | Yankton | 58 | Earth | Recreation | High | 1953 |
| 34 | Center Lake Dam | Custer | 56 | Earth | Recreation | High | 1935 |
| 35 | Crow Creek | Buffalo | 55 | Earth | Recreation | Significant | 1939 |
| 36 | Mitchell | Davison | 55 | Earth | Water Supply | High | 1928 |
| 37 | Spring-bull 2c | Charles Mix | 54 | Earth | Flood Risk Reduction | Significant | 1982 |
| 38 | Stockade Lake Dam | Custer | 53 | Earth | Recreation | High | 1930 |
| 39 | Menno Dam | Hutchinson | 53 | Earth | Recreation | High | 1935 |
| 40 | Orl Walcott #1 | Lyman | 53 | Earth | Fire Protection, Stock, Or Small Fish Pond | Significant | 1967 |
| 41 | Highway 44 #4 | Mellette | 53 | Earth | Other | Significant | 1970 |
| 42 | Richmond | Brown | 52 | Earth | Recreation | High | 1935 |
| 43 | Elm Lake Dam | Brown | 52 | Earth | Water Supply | High | 1937 |
| 44 | Burlington Dam | Fall River | 52 | Earth | Fire Protection, Stock, Or Small Fish Pond | Low | 1919 |
| 45 | Bh Rc&d Grade Structure Bh Ca-305.3-la | Lawrence | 50 | Earth | Flood Risk Reduction | Low | 1976 |
| 46 | Berry Dam | Mellette | 50 | Earth | Fire Protection, Stock, Or Small Fish Pond | Significant | 1985 |
| 47 | Highway 44 | Mellette | 50 | Earth | Other | Significant | 1973 |
| 48 | Indian Scout | Todd | 50 | Earth | Recreation | High | 2010 |
| 49 | Willow Creek | Brown | 49 | Earth | Water Supply | High | 1934 |
| 50 | Herman #7 | Jones | 49 | Earth | Fire Protection, Stock, Or Small Fish Pond | Low | 1958 |