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 2051–2075 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Derry Robert No.1 Mellette County | 28 | 1965 | Low | Not Rated |
| Denby Dam Oglala Lakota County | 27 | 1939 | Low | Not Rated |
| Delzer No. 2 Butte County | 21 | 1974 | Low | Not Rated |
| Delzer No. 1 Butte County | 19 | 1974 | Low | Not Rated |
| Dell Oliver Perkins County | 19 | 1951 | Low | Not Rated |
| Delbridge Dam Meade County | 20 | 1931 | Low | Not Rated |
| Dejongs Bros. 8 Lyman County | 29 | 1962 | Low | Not Rated |
| Dejong Bros 9 Lyman County | 26 | 1962 | Low | Not Rated |
| Dejong Bros. 7 Lyman County | 33 | 1962 | Low | Not Rated |
| Dejong Bros 5 Tripp County | 27 | 1961 | Low | Not Rated |
| Dejong Bros 4 Tripp County | 26 | 1961 | Low | Not Rated |
| Dejong Bros 3 Tripp County | 28 | 1961 | Low | Not Rated |
| Dejong Bros 2 Tripp County | 30 | 1961 | Low | Not Rated |
| Dejong Bros. 12 Lyman County | 28 | 1962 | Low | Not Rated |
| Dejong Bros 11 Lyman County | 25 | 1962 | Low | Not Rated |
| Dejong Bros 10 Lyman County | 26 | 1962 | Low | Not Rated |
| Dejong Bros 1 Lyman County | 32 | 1961 | Low | Not Rated |
| Deiss No. 1 Mellette County | 25 | 1971 | Low | Not Rated |
| Deiss Dam Mellette County | 25 | 1935 | Low | Not Rated |
| Dehaan Livestock Dam Charles Mix County | 19 | 1976 | Low | Not Rated |
| Deerfield Park Pennington County | 36 | 1981 | High | Fair |
| Deerfield Dam Pennington County | 171 | 1947 | High | Not Available |
| Deer Dam Harding County | 17 | 1963 | Low | Not Rated |
| Deer Creek South Perkins County | 15 | 1991 | Low | Not Rated |
| Deer Creek North Perkins County | 11 | 1991 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.