South Dakota Dams
2,541 dams tracked by the National Inventory of Dams
Total Dams
2,541
High Hazard
86
3.4%
Poor / Unsatisfactory
34
Average Age
68 yrs
Hazard Classification
High86 (3.4%)
Significant149 (5.9%)
Low2,306 (90.8%)
Condition Assessment
Satisfactory9 (0.4%)
Fair41 (1.6%)
Poor / Unsatisfactory34 (1.3%)
Not Rated2,457 (96.7%)
Federal
158
State
171
Local
84
Private
2,125
Tallest Dams
- Grizzly Gulch Tailings Dam380 ft
- Oahe Dam245 ft
- Big Bend Dam205 ft
- Angostura Dam193 ft
- Deerfield Dam171 ft
High Hazard Dams
- Grizzly Gulch Tailings DamHigh
- Oahe DamHigh
- Big Bend DamHigh
- Angostura DamHigh
- Deerfield DamHigh
Poor Condition Dams
- OglalaUnsatisfactory
- MarindahlPoor
- Crow CreekPoor
- RichmondPoor
- Ghost HawkUnsatisfactory
All Dams in South Dakota
Showing 1301–1325 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Milesville Dam Haakon County | 15 | 1938 | Low | Not Rated |
| Miller Bros. Perkins County | 20 | 1958 | Low | Not Rated |
| Miller Bros. Perkins County | 19 | 1951 | Low | Not Rated |
| Miller Bros. Perkins County | 21 | 1960 | Low | Not Rated |
| Miller Bros. Perkins County | 21 | 1957 | Low | Not Rated |
| Miller Dam Butte County | 19 | 2013 | Low | Not Rated |
| Miller Dam Meade County | 24 | 1967 | Low | Not Rated |
| Miller Falls Canyon Fall River County | 28 | 1958 | Low | Not Rated |
| Milton Trask Pennington County | 17 | 1962 | Low | Not Rated |
| Mink Dam Harding County | 21 | 1960 | Low | Not Rated |
| Mirage Spink County | 38 | 1972 | Low | Not Rated |
| Missile 249 (Nid) Pennington County | 24 | 1936 | Low | Not Rated |
| Missouri Slope Grazing No. 2 Campbell County | 25 | 1965 | Low | Not Rated |
| Mitchell Dam Ziebach County | 25 | 1978 | Low | Not Rated |
| M. Kelley No.1 Ziebach County | 18 | 1940 | Low | Not Rated |
| M. Matthews Ziebach County | 26 | 1941 | Low | Not Rated |
| M. Mraz Ziebach County | 22 | 1956 | Low | Not Rated |
| M. Oehlerking Hyde County | 25 | 1948 | Low | Not Rated |
| M. Oehlerking Hyde County | 19 | 1935 | Low | Not Rated |
| M. Oehlerking Hyde County | 19 | 1949 | Low | Not Rated |
| Moench Dam Hanson County | 11 | 2003 | Low | Not Rated |
| M. Ogrady Meade County | 24 | 1970 | Low | Not Rated |
| Mollison Dam Hughes County | 32 | 2000 | Low | Not Rated |
| Mollman Dam Perkins County | 26 | 2002 | Low | Not Rated |
| Molstad Lake Walworth County | 19 | 1940 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.