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 1101–1125 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Louis Lesmeister Dewey County | 16 | 1940 | Low | Not Rated |
| Louis Caldwell Stanley County | 25 | 1956 | Low | Not Rated |
| Louis Bonhorst Number 5 Stanley County | 42 | 1962 | Low | Not Rated |
| Louis Bonhorst Number 4 Stanley County | 35 | 1961 | Low | Not Rated |
| Louis Bonhorst Number 3 Stanley County | 27 | 1958 | Low | Not Rated |
| Louis Bonhorst Number 2 Stanley County | 35 | 1958 | Low | Not Rated |
| Louis Bonhorst #1 Stanley County | 30 | 1959 | Low | Not Rated |
| Louie Englehardt Perkins County | 16 | 1951 | Low | Not Rated |
| Louie Englehardt Perkins County | 21 | 1955 | Low | Not Rated |
| Louder Number 3 Jones County | 22 | 1957 | Low | Not Rated |
| Louder Number 2 Jones County | 27 | 1959 | Low | Not Rated |
| Louder Number 1 Jones County | 29 | 1960 | Low | Not Rated |
| Louder Number 1 Jones County | 25 | 1956 | Low | Not Rated |
| Louder Number 1 Jones County | 25 | 1956 | Low | Not Rated |
| Lookout Lyman County | 25 | 1938 | Low | Not Rated |
| Long Hollow Dam Fall River County | 24 | 1947 | Low | Not Rated |
| Long Branch Dam Haakon County | 27 | 1959 | Low | Not Rated |
| Lone Tree Dam Tripp County | 24 | 2004 | Low | Not Rated |
| Lone Tree Haakon County | 16 | 1961 | Low | Not Rated |
| Loiseau Dam Moody County | 19 | 1993 | Low | Not Rated |
| Logan Thoene No.1 Gregory County | 63 | 1975 | Low | Not Rated |
| Logan Dam Clark County | 18 | 1936 | Low | Not Rated |
| Lodgepole Dam Perkins County | 25 | 1937 | Low | Not Rated |
| L. M. Hanson No Hyde County | 12 | 1953 | Low | Not Rated |
| L. M. Hanson Hyde County | 21 | 1956 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.