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 76–86 of 86
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Brueschke Dam Dewey County | 31 | 1933 | High | Fair |
| Brooks Dam Haakon County | 30 | 1953 | High | Fair |
| Bismark Lake Custer County | 40 | 1937 | High | Not Rated |
| Big Bend Dam Lyman County | 205 | 1963 | High | Not Available |
| Belle Fourche Dam Butte County | 122 | 1911 | High | Not Available |
| Bednar Dam Ziebach County | 19 | 1933 | High | Poor |
| Beaulieu Tripp County | 41 | 1947 | High | Fair |
| Antelope Todd County | 25 | 1939 | High | Poor |
| Angostura Dam Fall River County | 193 | 1949 | High | Not Available |
| Ambrose Hyde County | 21 | 1935 | High | Poor |
| Allen Bennett County | 24 | 1961 | High | Unsatisfactory |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.