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 1526–1550 of 2,541
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Nohrenberg No. 2 Mellette County | 35 | 1957 | Low | Not Rated |
| Nohrenburg No. 1 Mellette County | 32 | 1959 | Low | Not Rated |
| Nolan Sexton Perkins County | 23 | 1949 | Low | Not Rated |
| Noldner Number 1 Jones County | 25 | 1959 | Low | Not Rated |
| Norbert Bonhorst Stanley County | 33 | 1955 | Low | Not Rated |
| Nordstrom Minnehaha County | 27 | 1962 | Low | Not Rated |
| Norman Dam Stanley County | 16 | 2015 | Low | Not Rated |
| Norman Es Stanley County | 26 | 1966 | Low | Not Rated |
| Norman Number 1 Stanley County | 31 | 1967 | Low | Not Rated |
| Norman Nystrom Hughes County | 16 | 1938 | Low | Not Rated |
| Norman Schillinstad Walworth County | 20 | 1954 | Low | Not Rated |
| North Dam Harding County | 22 | 1951 | Low | Not Rated |
| Norton Dam Jackson County | 20 | 1960 | Low | Not Rated |
| Norwegian Bordan Gpa North Beadle County | 10 | 1996 | Low | Not Rated |
| Norwegian Bordan Gpa South Beadle County | 18 | 1996 | Low | Not Rated |
| Novatny Brothers No.1 Tripp County | 42 | 1975 | Low | Not Rated |
| N. Overdahl Meade County | 13 | 1945 | Low | Not Rated |
| Novey Joe Number 1 Mellette County | 26 | 1963 | Low | Not Rated |
| Novey No. 2 Mellette County | 26 | 1961 | Low | Not Rated |
| Novey No. 3 Mellette County | 25 | 1969 | Low | Not Rated |
| Novey No.4 Mellette County | 30 | 1966 | Low | Not Rated |
| Nowlin Dam Haakon County | 15 | 1950 | Low | Not Rated |
| N. Vansickel Meade County | 17 | 1949 | Low | Not Rated |
| Nygaard Duckpond Harding County | 12 | 1948 | Low | Not Rated |
| Nygaard Leaky Harding County | 14 | 1955 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.