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 1951–1975 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sd Noname 116 Pennington County | 17 | 1957 | Low | Not Rated |
| Sd Noname 117 Pennington County | 15 | 1954 | Low | Not Rated |
| Sd Noname 118 Haakon County | 11 | 1950 | Significant | Not Rated |
| Sd Noname 119 Haakon County | 23 | 1950 | Significant | Not Rated |
| Sd Noname 12 Pennington County | 17 | 1952 | Low | Not Rated |
| Sd Noname 123 Haakon County | 21 | 1961 | Low | Not Rated |
| Sd Noname 124 Pennington County | 9 | 1950 | Low | Not Rated |
| Sd Noname 125 Haakon County | 18 | 1950 | Low | Not Rated |
| Sd Noname 126 Pennington County | 15 | 1947 | Low | Not Rated |
| Sd Noname 128 Pennington County | 13 | 1955 | Low | Not Rated |
| Sd Noname 129 Haakon County | 20 | 1958 | Low | Not Rated |
| Sd Noname 13 Pennington County | 15 | 1957 | Low | Not Rated |
| Sd Noname 130 Harding County | 27 | 1965 | Low | Not Rated |
| Sd Noname 131 Harding County | 19 | 1956 | Low | Not Rated |
| Sd Noname 132 Harding County | 17 | 1959 | Low | Not Rated |
| Sd Noname 133 Fall River County | 23 | 1951 | Low | Not Rated |
| Sd Noname 134 Fall River County | 18 | 1951 | Significant | Not Rated |
| Sd Noname 135 Jackson County | 20 | 1940 | Low | Not Rated |
| Sd Noname 136 Haakon County | 15 | 1958 | Significant | Not Rated |
| Sd Noname 138 Pennington County | 20 | 1957 | Low | Not Rated |
| Sd Noname 139 Jackson County | 17 | 1950 | Low | Not Rated |
| Sd Noname 140 Jackson County | 12 | 1950 | Low | Not Rated |
| Sd Noname 141 Jackson County | 29 | 1960 | Significant | Not Rated |
| Sd Noname 142 Jackson County | 14 | 1950 | Low | Not Rated |
| Sd Noname 143 Jackson County | 15 | 1935 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.