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 1151–1175 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lewandowski Dam Roberts County | 29 | 2006 | Low | Not Rated |
| Letellier Mellette County | 25 | 1955 | Low | Not Rated |
| Leteililer No. 1 Mellette County | 26 | 1960 | Low | Not Rated |
| Lester Sein Perkins County | 24 | 1949 | Low | Not Rated |
| Lester Hetzel Corson County | 16 | 1948 | Low | Not Rated |
| Lesmeister Dam Corson County | 40 | — | Low | Not Rated |
| Leslie Caldwell Stanley County | 26 | 1959 | Low | Not Rated |
| Lermeny Dam Harding County | 25 | 1903 | Low | Not Rated |
| Leo Ruona Pond No.1 Harding County | 16 | 1959 | Low | Not Rated |
| Leo Ritter Walworth County | 20 | 1958 | Low | Not Rated |
| Leonard Ziesier No.1 Gregory County | 30 | 1970 | Low | Not Rated |
| Leola McPherson County | 12 | 1935 | Low | Not Rated |
| Leo Berens Walworth County | 27 | 1942 | Low | Not Rated |
| Lenard Chapman Perkins County | 20 | 1952 | Low | Not Rated |
| Lenard Chapman Perkins County | 19 | 1955 | Low | Not Rated |
| Lemm Dam Harding County | 20 | 1949 | Low | Not Rated |
| Leland Edwards Perkins County | 19 | 1951 | Low | Not Rated |
| Leland Edwards Perkins County | 15 | 1955 | Low | Not Rated |
| Leland Edwards Perkins County | 21 | 1958 | Low | Not Rated |
| Leland Edwards Perkins County | 15 | 1956 | Low | Not Rated |
| Leichtnam Dam Lyman County | 16 | 2003 | Low | Not Rated |
| Leger Irrigation Harding County | 28 | 1950 | Low | Not Rated |
| Leger East Harding County | 20 | 1955 | Low | Not Rated |
| Leger Badlands Dam Harding County | 20 | 1960 | Low | Not Rated |
| Lee Crowser Dam No.1 Meade County | 19 | 1954 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.