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 801–825 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Helsels Plum Creek Dam Fall River County | 18 | 1938 | Low | Not Rated |
| Hemmingson Irr. Dam Haakon County | 22 | 1977 | Low | Not Rated |
| Hendricks Number 1 Jones County | 22 | 1958 | Low | Not Rated |
| Hendricks Number 2 Jones County | 23 | 1937 | Low | Not Rated |
| Hendricks Number 3 Jones County | 17 | 1954 | Low | Not Rated |
| Hendricks Number 4 Jones County | 19 | 1953 | Low | Not Rated |
| Hendricks Number 5 Jones County | 14 | 1961 | Low | Not Rated |
| Henle Ranch Number 1 Jones County | 25 | 1959 | Low | Not Rated |
| Henry Dam Fall River County | 20 | 1951 | Low | Not Rated |
| Henry Siebrasse Potter County | 13 | 1945 | Low | Not Rated |
| Henry Wilson Stanley County | 26 | 1962 | Low | Not Rated |
| Herford Lake Meade County | 28 | 1935 | Low | Not Rated |
| Herman #1 Jones County | 28 | 1961 | Low | Not Rated |
| Herman #10 Jones County | 32 | 1964 | Low | Not Rated |
| Herman #11 Jones County | 24 | 1960 | Low | Not Rated |
| Herman #12 Jones County | 29 | 1959 | Low | Not Rated |
| Herman #13 Jones County | 27 | 1959 | Low | Not Rated |
| Herman #14 Jones County | 32 | 1961 | Low | Not Rated |
| Herman #15 Jones County | 41 | 1958 | Low | Not Rated |
| Herman #2 Jones County | 33 | 1971 | Low | Not Rated |
| Herman #3 Jones County | 25 | 1959 | Low | Not Rated |
| Herman #4 Jones County | 30 | 1958 | Low | Not Rated |
| Herman #5 Jones County | 38 | 1959 | Low | Not Rated |
| Herman #6 Jones County | 29 | 1962 | Low | Not Rated |
| Herman #7 Jones County | 49 | 1958 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.