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 1951–1975 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eckland A.W. No.1 Mellette County | 27 | 1964 | Low | Not Rated |
| E.B. Wilson Meade County | 15 | 1946 | Low | Not Rated |
| Ebersoll Dam Fall River County | 21 | 1937 | Low | Not Rated |
| East Weta 1 (Nid) Jackson County | 16 | 1937 | Low | Not Rated |
| East Vermillion McCook County | 41 | 1958 | Low | Not Rated |
| East Morristown Lake Corson County | 34 | 1910 | Low | Not Rated |
| East Lemmon Perkins County | 30 | 1930 | Low | Not Rated |
| Eastern Grazing Assn No. 5 Campbell County | 26 | 1965 | Low | Not Rated |
| Eastern Grazing Assn No. 3 Campbell County | 25 | 1964 | Low | Not Rated |
| Earl Witte No.1 Custer County | 21 | 1960 | Low | Not Rated |
| Earl Pullins Perkins County | 25 | 1952 | Low | Not Rated |
| Earl Mcpherson Dam No.1 Meade County | 30 | 1958 | Low | Not Rated |
| Earl Hanrahan Haakon County | 12 | 1949 | Low | Not Rated |
| Earl Burtz 1 Tripp County | 25 | 1950 | Low | Not Rated |
| Dykstra Number 9 Jones County | 34 | 1961 | Low | Not Rated |
| Dykstra Number 8 Jones County | 25 | 1953 | Low | Not Rated |
| Dykstra Number 7 Jones County | 30 | 1953 | Low | Not Rated |
| Dykstra Number 6 Jones County | 34 | 1952 | Low | Not Rated |
| Dykstra Number 5 Jones County | 26 | 1964 | Low | Not Rated |
| Dykstra Number 4 Jones County | 28 | 1954 | Low | Not Rated |
| Dykstra Number 3 Jones County | 26 | 1952 | Low | Not Rated |
| Dykstra Number 2 Jones County | 26 | 1956 | Low | Not Rated |
| Dykstra Number 17 Jones County | 30 | 1957 | Low | Not Rated |
| Dykstra Number 16 Jones County | 30 | 1959 | Low | Not Rated |
| Dykstra Number 15 Jones County | 34 | 1953 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.