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 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| State Land Meade County | 14 | 1953 | Low | Not Rated |
| State of Sd Perkins County | 27 | 1949 | Low | Not Rated |
| State of South Dakota Potter County | 12 | 1954 | Low | Not Rated |
| Staum Beadle County | 28 | 1934 | Low | Not Rated |
| Steffen Dam Gregory County | 24 | 2007 | Low | Not Rated |
| Stephan Mission Hyde County | 19 | 1937 | Low | Not Rated |
| Stephen Mission Hyde County | 26 | 1943 | Low | Not Rated |
| Stephen Mission Hyde County | 34 | 1939 | Low | Not Rated |
| Stern Dam Clark County | 30 | 2005 | Low | Not Rated |
| Sterns #1 Harding County | 24 | 1959 | Low | Not Rated |
| Sterns No.2 Harding County | 20 | 1955 | Low | Not Rated |
| Steve Perry Dam Lyman County | 26 | 1997 | Low | Not Rated |
| Stewart Clay County | 28 | 1971 | Low | Not Rated |
| Stickney (Jones) Aurora County | 24 | 1965 | Low | Not Rated |
| S. Tidball Dewey County | 19 | 1948 | Low | Not Rated |
| Stinking Buffalo Harding County | 19 | 1951 | Low | Not Rated |
| Stirling #2 Jones County | 25 | 1962 | Low | Not Rated |
| Stirling Number 1 Jones County | 25 | 1958 | Low | Not Rated |
| Stockton Number 1 Jones County | 27 | 1957 | Low | Not Rated |
| Stockton Ranch No. 1 Jones County | 25 | 1976 | Low | Not Rated |
| Stockwater Dam Stanley County | 28 | 1984 | Low | Not Rated |
| Stoeser Dam #2 Stanley County | 30 | 1976 | Low | Not Rated |
| Stoeser Dam #3 Stanley County | 20 | 1976 | Low | Not Rated |
| Stoeser No. 4 Stanley County | 25 | 2008 | Low | Not Rated |
| Stoeser No. 5 Stanley County | 30 | 2017 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.