38Total Dams
6High Hazard
3Significant
Dam Safety in Teton County, Montana
Teton County has 38 dams tracked in the National Inventory of Dams. Of these, 6 are classified as high hazard — meaning failure would probably cause loss of human life. Another 3 carry a significant hazard classification. Currently, 1 dam has a condition assessment of poor or unsatisfactory.
The average dam in Teton County is 77 years old. The most common purpose is fire protection, stock, or small fish pond. The tallest dam is Gibson Dam at 199 ft.
Explore more: Oldest dams in Montana · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Gibson Dam | High | Not assessed | 199 | Irrigation | 1929 |
| Sun River Diversion Dam | High | Not assessed | 132 | Irrigation | 1915 |
| Bynum Reservoir Dam | High | Satisfactory | 60 | Irrigation | 1926 |
| Eureka Reservoir Dam | High | Poor | 32 | Irrigation | 1936 |
| Pishkun Dike 7 | High | Not assessed | 16 | Irrigation | 1931 |
| Eureka Reservoir West Dike | High | Satisfactory | 12 | Irrigation | 1936 |
| Wolf Coulee Dam | Significant | Not assessed | 38 | Irrigation | 2004 |
| Harvey Lake | Significant | Not assessed | 26 | Irrigation | 1941 |
| Manual Oakley Group Dam | Significant | Not assessed | 20 | Recreation | 1963 |
| Moving'along | Low | Not assessed | 38 | Irrigation | 1948 |
| Deep Can | Low | Not assessed | 35 | Irrigation | 1935 |
| Woodhouse-lattin | Low | Not assessed | 34 | Recreation | 1963 |
| Farmers Coop Canal Co | Low | Not assessed | 34 | Irrigation | 1940 |
| Half-pint | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Gordan Lightfoot | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1972 |
| Decameter | Low | Not assessed | 20 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Decarboxylation | Low | Not assessed | 20 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Dougcliff Reservoir | Low | Not assessed | 20 | Irrigation | 1950 |
| Cloudy Day | Low | Not assessed | 20 | Irrigation | 1953 |
| Ferris Farms | Low | Not assessed | 20 | Irrigation | 1949 |
| Freak Out | Low | Not assessed | 20 | Fire Protection, Stock, Or Small Fish Pond | 1948 |
| John Lane | Low | Not assessed | 20 | Irrigation | 1952 |
| Young Clemons | Low | Not assessed | 18 | Fire Protection, Stock, Or Small Fish Pond | 1950 |
| Neptune | Low | Not assessed | 16 | Fire Protection, Stock, Or Small Fish Pond | 1920 |
| Thav | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1940 |
| Decuman | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Jonquil | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1938 |
| Twin Lakes | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1952 |
| Young Sun | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1970 |
| Standley Irrigation Dam | Low | Not assessed | 15 | Irrigation | 1977 |
| Costly Coulee Reservoir | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1950 |
| Oak Ridge | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1943 |
| Rockport Colony #2 | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Ostle | Low | Not assessed | 12 | Irrigation | 1910 |
| Deminish | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1952 |
| Brady Lakes #4 | Low | Not assessed | 8 | Fire Protection, Stock, Or Small Fish Pond | 1930 |
| Robbie (teton) | Low | Not assessed | 8 | Other | 1940 |
| Rockport Colony #1 | Low | Not assessed | 7 | Fire Protection, Stock, Or Small Fish Pond | 1960 |