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 1576–1600 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ollie Stomprud Meade County | 21 | 1956 | Low | Not Rated |
| Olsen Dam Ziebach County | 18 | 1995 | Low | Not Rated |
| Olsen Dam Meade County | 33 | 1980 | Low | Not Rated |
| Olsen Dam Buffalo County | 35 | 1952 | Significant | Not Rated |
| Olson #4 Jones County | 25 | 1967 | Low | Not Rated |
| Olson Dam Corson County | 25 | 1975 | Low | Not Rated |
| Olson No. 1 Mellette County | 26 | 1962 | Low | Not Rated |
| Olson No. 2 Mellette County | 28 | 1966 | Low | Not Rated |
| Olson Number 1 Jones County | 28 | 1953 | Low | Not Rated |
| Olson Number 2 Jones County | 27 | 1954 | Low | Not Rated |
| Olson Number 3 Jones County | 26 | 1954 | Low | Not Rated |
| Olson Ranches INC. #1 Jones County | 27 | 1957 | Low | Not Rated |
| Olson Ranches INC. #10 Jones County | 28 | 1956 | Low | Not Rated |
| Olson Ranches INC. #12 Jones County | 26 | 1956 | Low | Not Rated |
| Olson Ranches INC. #13 Jones County | 31 | 1977 | Low | Not Rated |
| Olson Ranches INC. #14 Jones County | 26 | 1979 | Low | Not Rated |
| Olson Ranches INC. #2 Jones County | 29 | 1958 | Low | Not Rated |
| Olson Ranches INC. #3 Jones County | 25 | 1956 | Low | Not Rated |
| Olson Ranches INC. #4 Jones County | 25 | 1966 | Low | Not Rated |
| Olson Ranches INC. #5 Jones County | 31 | 1959 | Low | Not Rated |
| Olson Ranches INC. #7 Jones County | 25 | 1956 | Low | Not Rated |
| Olson Ranches INC. #8 Jones County | 28 | 1955 | Low | Not Rated |
| Olson Ranches INC. #9 Jones County | 26 | 1956 | Low | Not Rated |
| Olson Ranches No. 5 Jones County | 26 | 1979 | Low | Not Rated |
| Olson Ranch INC. #6 Jones County | 26 | 1959 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.