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 2026–2050 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Dolezal No. 6 Mellette County | 29 | 1968 | Low | Not Rated |
| Dolezal No.5 Mellette County | 25 | 1969 | Low | Not Rated |
| Dolezal No.4 Mellette County | 26 | 1969 | Low | Not Rated |
| Dolezal No. 3 Mellette County | 27 | 1963 | Low | Not Rated |
| Dolezal No. 2 Mellette County | 28 | 1963 | Low | Not Rated |
| Dolezal John Number 8 Mellette County | 26 | 1960 | Low | Not Rated |
| Dolezal John Number 7 Mellette County | 26 | 1960 | Low | Not Rated |
| Dohn Dam McPherson County | 17 | 1995 | Low | Not Rated |
| D. Nuzum Meade County | 24 | 1954 | Low | Not Rated |
| D. Keffeler Meade County | 14 | 1948 | Low | Not Rated |
| Disseau Dam 2 Brule County | 25 | 1947 | Significant | Not Rated |
| Dimond Wendell No. 1 Mellette County | 26 | 1967 | Low | Not Rated |
| Dimock Hutchinson County | 30 | 1937 | Low | Not Rated |
| Dienert Campbell County | 27 | 1981 | Low | Not Rated |
| Dick Simon No.1 Dewey County | 21 | 1950 | Low | Not Rated |
| Diamond Ring Ranch #6 Haakon County | 25 | 1969 | Low | Not Rated |
| Diamond Ring Ranch #4 Haakon County | 18 | 1969 | Low | Not Rated |
| Diamond Ring Ranch #3 Haakon County | 15 | 1969 | Low | Not Rated |
| Diamond Ring Ranch #2 Haakon County | 25 | 1973 | Low | Not Rated |
| Diamond F Ranch Meade County | 20 | 1938 | Low | Not Rated |
| D. Gifford No.2 Meade County | 18 | 1959 | Low | Not Rated |
| D. Gifford No.1 Meade County | 22 | 1964 | Low | Not Rated |
| D. Faulstich Hyde County | 13 | 1947 | Low | Not Rated |
| Dewberry Dam Dewey County | 22 | 1937 | Low | Not Rated |
| Deuchar Dam Haakon County | 19 | 1950 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.