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 |
|---|---|---|---|---|
| Rosebud Todd County | 37 | 1935 | High | Satisfactory |
| Shadehill Dike 2 Perkins County | 83 | 1951 | High | Not Available |
| Sheridan Lake Pennington County | 134 | 1939 | High | Not Rated |
| South Okreek Todd County | 17 | 1935 | High | Fair |
| Standing Rock No. 1 Corson County | 39 | 1935 | High | Fair |
| Stockade Lake Dam Custer County | 53 | 1930 | High | Fair |
| Sully 2 Todd County | 29 | 1935 | High | Satisfactory |
| Sylvan Lake Dam Custer County | 37 | 1906 | High | Fair |
| White Clay Oglala Lakota County | 35 | 1936 | High | Unsatisfactory |
| Willow Creek Brown County | 49 | 1934 | High | Fair |
| Wolf Creek Oglala Lakota County | 27 | 1965 | 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.