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 1501–1525 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Jay A. Lake No.5 Potter County | 26 | 1955 | Low | Not Rated |
| Jay A. Lake No.4 Potter County | 17 | 1952 | Low | Not Rated |
| Jay A. Lake No.3 Potter County | 24 | 1952 | Low | Not Rated |
| Jay A. Lake No.2 Potter County | 26 | 1948 | Low | Not Rated |
| Jarl No.1 Mellette County | 23 | 1968 | Low | Not Rated |
| Jans Herald No.1 Mellette County | 25 | 1966 | Low | Not Rated |
| Jans 1 Mellette County | 32 | 1936 | Low | Not Rated |
| James Seiler Corson County | 17 | 1933 | Low | Not Rated |
| James Petik No.2 Corson County | 16 | 1950 | Low | Not Rated |
| James Petik No.1 Corson County | 19 | 1948 | Low | Not Rated |
| James Kjerstad Pennington County | 15 | 1950 | Low | Not Rated |
| James Diversion Dam Beadle County | 47 | 1964 | Low | Not Available |
| Jake Kern Corson County | 21 | 1941 | Low | Not Rated |
| Jake Kern Corson County | 19 | 1941 | Low | Not Rated |
| Jacquot Dam Bennett County | 25 | 1960 | Significant | Not Rated |
| Jacobs Dam Moody County | 29 | 1987 | Low | Not Rated |
| Jacobi Dam Harding County | 22 | 1951 | Low | Not Rated |
| Jacob Goetz Walworth County | 18 | 1956 | Low | Not Rated |
| Jackson Dam Corson County | 12 | 1981 | Significant | Not Rated |
| Jack Hunt Ziebach County | 28 | 1956 | Low | Not Rated |
| Jack Freeman Dam Ziebach County | 24 | 1961 | Low | Not Rated |
| Jack Freeman Ziebach County | 25 | 1960 | Low | Not Rated |
| Jack Bastain Perkins County | 22 | 1955 | Low | Not Rated |
| Iwan O.M. Number 3 Mellette County | 27 | 1960 | Low | Not Rated |
| Iwan O.M. Number 1 Mellette County | 26 | 1970 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.