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 1501–1525 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Pearl Lake Hand County | 23 | 1938 | Low | Not Rated |
| Pearl Ross Perkins County | 20 | 1956 | Low | Not Rated |
| Peck Dam Perkins County | 18 | 1934 | Low | Not Rated |
| Peno Grazing Association Pennington County | 25 | 1952 | Low | Not Rated |
| Peno Lake Hyde County | 27 | 1935 | Low | Not Rated |
| Penrhos Farms #1 Marshall County | 24 | 1982 | Low | Not Rated |
| Penrhos Farms #2 Marshall County | 22 | 1976 | Low | Not Rated |
| Penrhos Farms #5 Marshall County | 14 | 1976 | Low | Not Rated |
| Perault Number 1 Jones County | 27 | 1959 | Low | Not Rated |
| Perault Number 2 Jones County | 26 | 1956 | Low | Not Rated |
| Perault Number 3 Jones County | 28 | 1960 | Low | Not Rated |
| Perault Number 4 Jones County | 28 | 1958 | Low | Not Rated |
| Perault Number 5 Jones County | 28 | 1961 | Low | Not Rated |
| Perault Number 6 Jones County | 25 | 1941 | Low | Not Rated |
| Perault Number 7 Jones County | 27 | 1953 | Low | Not Rated |
| Perch Lake Dam McPherson County | 26 | 1977 | Low | Poor |
| Percy Dam Pennington County | 21 | 1956 | Low | Not Rated |
| Pere Pearson Haakon County | 16 | 1958 | Low | Not Rated |
| Pere Pearson 1 Haakon County | 20 | 1955 | Low | Not Rated |
| Perry Dam Mellette County | 40 | 1994 | Low | Not Rated |
| Peters #1 Jones County | 31 | 1977 | Low | Not Rated |
| Peters 1 Meade County | 15 | 1955 | Low | Not Rated |
| Peters Dam Marshall County | 23 | 1997 | Low | Not Rated |
| Petersen Dam Lyman County | 11 | 1955 | Low | Not Rated |
| Petersen Hans No.1 Mellette County | 26 | 1972 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.