13Total Dams
1High Hazard
1Significant
Dam Safety in Grant County, South Dakota
Grant County has 13 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification.
The average dam in Grant County is 40 years old. The most common purpose is recreation. The tallest dam is MUD Creek Dt Dam M-1 at 44 ft.
Explore more: Oldest dams in South Dakota · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Farley Lake Dam | High | Fair | 15 | Water Supply | 1910 |
| Rude Hasvold Road Dam | Significant | Not assessed | 32 | Flood Risk Reduction | 1970 |
| MUD Creek Dt Dam M-1 | Low | Not assessed | 44 | Flood Risk Reduction | 1972 |
| Blue Cloud Abbey Dam #2 | Low | Not assessed | 40 | Recreation | 1978 |
| Blue Cloud Abbey Dam #1 | Low | Not assessed | 35 | Recreation | 1951 |
| Thaden Dam | Low | Not assessed | 30 | Fire Protection, Stock, Or Small Fish Pond | 2018 |
| Labolt Lake | Low | Not assessed | 25 | Recreation | 1935 |
| Kane Dam | Low | Not assessed | 20 | Fish and Wildlife Pond | 2008 |
| Circle Bar Ranch Dam | Low | Not assessed | 20 | Fish and Wildlife Pond | 2013 |
| O'farrell Dam No. 1 | Low | Not assessed | 20 | Fish and Wildlife Pond | 2005 |
| O'farrell Dam No. 2 | Low | Not assessed | 20 | Recreation | 2006 |
| Blooming Valley Dairy Sw Wwp | Low | Not assessed | 16 | Other | 2023 |
| Blooming Valley Dairy Ne Wwp | Low | Not assessed | 12 | Other | 2023 |