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 2076–2100 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Talley Dam Perkins County | 19 | 1950 | Low | Not Rated |
| Tate Dam Todd County | 14 | 1986 | Low | Not Rated |
| Taylor Brothers Sully County | 18 | 1947 | Low | Not Rated |
| Ted Matson Harding County | 19 | 1968 | Low | Not Rated |
| Ted Molstad Dam Walworth County | 23 | 1951 | Low | Not Rated |
| Ted Olson Meade County | 18 | 1955 | Low | Not Rated |
| Teepee Harding County | 20 | 1950 | Low | Not Rated |
| Tekakwitha Roberts County | 22 | 1964 | Low | Not Rated |
| Temple No.1 Jackson County | 14 | 1940 | Low | Not Rated |
| Tennyson Dam Pennington County | 20 | 1937 | Low | Not Rated |
| Tevedhal Dam Jerauld County | 15 | 2008 | Low | Not Rated |
| Texley East Corson County | 24 | 1989 | Low | Not Rated |
| Thaden Dam Grant County | 30 | 2018 | Low | Not Rated |
| The Heppner Dam Fall River County | 32 | 1935 | Low | Not Rated |
| Theodore Kjerstad Pennington County | 17 | 1951 | Low | Not Rated |
| Third Street Dam Beadle County | 7 | 1930 | Low | Not Rated |
| Thistle Dam Pennington County | 15 | — | Low | Not Available |
| T. Holzwarth Potter County | 20 | 1951 | Low | Not Rated |
| Thomas Burke Dam No. 1 Butte County | 20 | 1948 | Low | Not Rated |
| Thomas Dugan Corson County | 21 | 1950 | Low | Not Rated |
| Thomas Number 1 Jones County | 27 | 1955 | Low | Not Rated |
| Thomas Number 2 Jones County | 27 | 1956 | Low | Not Rated |
| Thomas Number 3 Jones County | 28 | 1959 | Low | Not Rated |
| Thompson Dam Lyman County | 23 | 2010 | Low | Not Rated |
| Thompson Ranch Dam Fall River County | 22 | 2003 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.