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 1601–1625 of 2,306
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Gilliland Roy No.1 Mellette County | 28 | 1960 | Low | Not Rated |
| Gilbert Ranches Pond No. Harding County | 17 | 1952 | Low | Not Rated |
| Gilbert No.3 Harding County | 13 | 1955 | Low | Not Rated |
| Gilbert No.2 Harding County | 22 | 1956 | Low | Not Rated |
| Gilbert No.1 Harding County | 19 | 1954 | Low | Not Rated |
| Gifford No. 2 Mellette County | 27 | 1940 | Low | Not Rated |
| Gifford No.1 Mellette County | 26 | 1940 | Low | Not Rated |
| Gibbons No. 4 Brookings County | 26 | 2000 | Low | Not Rated |
| Gibbons No. 3 Brookings County | 26 | 2000 | Low | Not Rated |
| Gibbons Dam Brookings County | 21 | 1996 | Low | Not Rated |
| G. Holloway Dewey County | 23 | 1936 | Low | Not Rated |
| G. Hand Dewey County | 17 | 1937 | Low | Not Rated |
| G. French Homestead Dewey County | 42 | 1948 | Low | Not Rated |
| G. Flier Custer County | 19 | 1958 | Low | Not Rated |
| Geyer Dam Kingsbury County | 14 | 2000 | Low | Not Rated |
| Gerkin Refuge No.3 Faulk County | 10 | 1956 | Low | Not Rated |
| Gerkin Refuge No.2 Faulk County | 15 | 1956 | Low | Not Rated |
| Gerkin Refuge No.1 Faulk County | 15 | 1936 | Low | Not Rated |
| Gerbracht Dam Perkins County | 28 | 1998 | Low | Not Rated |
| Gerald Martian Corson County | 19 | 1934 | Low | Not Rated |
| George Turner Walworth County | 32 | 1950 | Low | Not Rated |
| George Merickson Dam 1 Butte County | 28 | 1955 | Low | Not Rated |
| George Levin Dam No.1 Meade County | 10 | 1951 | Low | Not Rated |
| George Knapp Dam Pennington County | 15 | 1955 | Low | Not Rated |
| George Jesfjeld Perkins County | 18 | 1951 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.