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 1476–1500 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mt. View Ranch Dam Meade County | 25 | 1965 | Low | Not Rated |
| Mud Butte Harding County | 20 | 1948 | Low | Not Rated |
| Mud Butte Harding County | 26 | 1940 | Low | Not Rated |
| Mud Creek Dt Dam M-1 Grant County | 44 | 1972 | Low | Not Rated |
| Mule Creek Dam Fall River County | 24 | 1952 | Low | Not Rated |
| Mundt Dam Sully County | 25 | 1937 | Low | Not Rated |
| Murphy Farms Dam Codington County | 16 | 1998 | Low | Not Rated |
| Muth Dam Perkins County | 19 | 2000 | Low | Not Rated |
| M. Vikse Campbell County | 24 | 1949 | Low | Not Rated |
| M. Webb Dewey County | 13 | 1946 | Low | Not Rated |
| M. Webb Dewey County | 16 | 1947 | Low | Not Rated |
| M. Weyers Meade County | 23 | 1954 | Low | Not Rated |
| Nagel Bros. Potter County | 16 | 1945 | Low | Not Rated |
| Nagel Bros. Potter County | 18 | 1951 | Low | Not Rated |
| Navratil Wpa Roberts County | 9 | 1990 | Low | Not Rated |
| Neilsen #1 Mellette County | 35 | 1968 | Low | Not Rated |
| Nelder Ebert No.1 Corson County | 18 | 1950 | Low | Not Rated |
| Nelder Ebert No.2 Corson County | 17 | 1950 | Low | Not Rated |
| Nelder Ebert No.3 Corson County | 14 | 1960 | Low | Not Rated |
| Nels (Nid) Lyman County | 18 | 1938 | Low | Not Rated |
| Nelson #1 Mellette County | 28 | 1950 | Low | Not Rated |
| Nelson Dam Harding County | 23 | 1956 | Low | Not Rated |
| Nelson Dam Meade County | 34 | 2001 | Low | Not Rated |
| Nelson Dam Charles Mix County | 40 | 1980 | Low | Not Rated |
| Nelson Dam Clark County | 17 | 1947 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.