29Total Dams
11High Hazard
6Significant
Dam Safety in Madison County, Montana
Madison County has 29 dams tracked in the National Inventory of Dams. Of these, 11 are classified as high hazard — meaning failure would probably cause loss of human life. Another 6 carry a significant hazard classification. Currently, 4 dams have a condition assessment of poor or unsatisfactory.
The average dam in Madison County is 71 years old. The most common purpose is irrigation. The tallest dam is Tailings Impoundment at 155 ft.
Explore more: Oldest dams in Montana · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Ruby Dam | High | Satisfactory | 111 | Irrigation | 1938 |
| Willow Creek Dam | High | Poor | 105 | Irrigation | 1938 |
| Cataract Creek Dam | High | Unsatisfactory | 80 | Irrigation | 1959 |
| Big Sky Dam | High | Satisfactory | 52 | Recreation | 1973 |
| Green Hollow Creek Dam | High | Satisfactory | 45 | Recreation | 1990 |
| Madison Dam | High | Satisfactory | 39 | Hydroelectric | 1907 |
| Jackson (madison) | High | Poor | 34 | Irrigation | 1959 |
| South Meadow Creek Dam | High | Not assessed | 22 | Irrigation | 1968 |
| Bell Lake Dam | High | Not assessed | 20 | Irrigation | 1957 |
| Beaver Ranch Dam | High | Satisfactory | 15 | Fire Protection, Stock, Or Small Fish Pond | 1945 |
| Twin Bridges Wastewater Lagoon Dam | High | Not assessed | 13 | Other | |
| Tailings Impoundment | Significant | Not assessed | 155 | ||
| Norwegian Creek Dam | Significant | Not assessed | 85 | Irrigation | 1958 |
| Hemund | Significant | Not assessed | 20 | Irrigation | 1974 |
| Jackson #1 | Significant | Not assessed | 19 | Irrigation | 1924 |
| Sunrise Lake | Significant | Not assessed | 14 | Irrigation | 1916 |
| Upper Branham | Significant | Not assessed | 6 | Recreation | 1980 |
| Hacker Dam | Low | Not assessed | 34 | Irrigation | 1953 |
| Dry Hollow | Low | Not assessed | 25 | Irrigation | 1999 |
| Mad Chant | Low | Not assessed | 20 | Fire Protection, Stock, Or Small Fish Pond | 1950 |
| Klatt | Low | Not assessed | 16 | Irrigation | 1949 |
| Cosmic Nick | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Middle Axolotl Lake #1 | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1945 |
| Middle Axoloil Lake #2 | Low | Not assessed | 15 | Fire Protection, Stock, Or Small Fish Pond | 1945 |
| South Axolotl Lake Dam | Low | Unsatisfactory | 15 | ||
| Albro | Low | Not assessed | 11 | Irrigation | 1967 |
| Durham | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| East Axolotl Lake | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 1945 |
| Marsh Lake | Low | Not assessed | 8 | Irrigation | 1956 |