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 1701–1725 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Falk Dam Hughes County | 27 | 1999 | Low | Not Rated |
| Fairview Ranch Dam Perkins County | 27 | 2004 | Low | Not Rated |
| Fairfax Lake Gregory County | 28 | 1934 | Low | Not Rated |
| E. Wilson Meade County | 20 | 1947 | Low | Not Rated |
| Evenson North Irrigation Harding County | 18 | 1950 | Low | Not Rated |
| Evenson Irrigation Dam Harding County | 30 | 1955 | Low | Not Rated |
| Evenson Lincoln County | 27 | 1970 | Low | Not Rated |
| Evans No.2 Custer County | 15 | 1960 | Low | Not Rated |
| Evans No.1 Custer County | 21 | 1951 | Low | Not Rated |
| Eugene Welder Perkins County | 26 | 1959 | Low | Not Rated |
| Eugene Miller Corson County | 19 | 1950 | Low | Not Rated |
| Etzkorn Hughes County | 26 | 1957 | Low | Not Rated |
| Ethan Hanson County | 15 | 1936 | Low | Not Rated |
| Estabrook Dam Aurora County | 18 | 1976 | Low | Not Rated |
| Esmay and Sandy #3 Jones County | 32 | 1971 | Low | Not Rated |
| Esmay and Sandy #2 Jones County | 27 | 1962 | Low | Not Rated |
| Esmay and Sandy #1 Jones County | 27 | 1956 | Low | Not Rated |
| Escott Bros. Perkins County | 28 | 1959 | Low | Not Rated |
| Erwin Eisenbraun Pennington County | 16 | 1948 | Low | Not Rated |
| Ervin Wolff Perkins County | 19 | 1972 | Low | Not Rated |
| Eros Data Center Dam Minnehaha County | 31 | 1972 | Low | Not Rated |
| Ernest Nemec Number 1 Stanley County | 18 | 1959 | Low | Not Rated |
| Ernest Kolb Perkins County | 18 | 1958 | Low | Not Rated |
| Ernest Kolb Perkins County | 15 | 1949 | Low | Not Rated |
| Englund Dam Roberts County | 16 | 1977 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.