Montana Dams
2,990 dams tracked by the National Inventory of Dams
Total Dams
2,990
High Hazard
188
6.3%
Poor / Unsatisfactory
132
Average Age
74 yrs
Hazard Classification
High188 (6.3%)
Significant193 (6.5%)
Low2,606 (87.2%)
Condition Assessment
Satisfactory113 (3.8%)
Fair44 (1.5%)
Poor / Unsatisfactory132 (4.4%)
Not Rated2,701 (90.3%)
Federal
278
State
151
Local
84
Private
2,466
Tallest Dams
- Yankee Doodle Tailings Dam570 ft
- Hungry Horse Dam564 ft
- Libby Dam422 ft
- Noxon Rapids260 ft
- Fort Peck Dam256 ft
High Hazard Dams
- Yankee Doodle Tailings DamHigh
- Hungry Horse DamHigh
- Libby DamHigh
- Noxon RapidsHigh
- Fort Peck DamHigh
Poor Condition Dams
All Dams in Montana
Showing 2776–2800 of 2,990
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Us #25 Garfield County | 22 | 1960 | Low | Not Rated |
| Vaira Richland County | 30 | 1955 | Low | Not Rated |
| Vale Creek #1 Big Horn County | 13 | 1966 | Low | Not Rated |
| Valley Dam Valley County | 29 | — | Low | Not Rated |
| Van #1 Garfield County | 18 | 1940 | Low | Not Rated |
| Van #2 Garfield County | 15 | 1940 | Significant | Not Rated |
| Vananda Rosebud County | 42 | 1936 | Low | Not Rated |
| Vandalia Diversion Dam Valley County | 32 | 1917 | Low | Not Available |
| Vanette'S Dam Powder River County | 19 | 1912 | Significant | Not Rated |
| Van Haur Fergus County | 12 | 1937 | Low | Not Rated |
| Vasboe Glacier County | 24 | 1908 | Low | Not Rated |
| Vassaus #11 Rosebud County | 20 | 1965 | Low | Not Rated |
| Vassaus #4 Rosebud County | 20 | 1965 | Low | Not Rated |
| Vassaus #5 Rosebud County | 16 | 1945 | Low | Not Rated |
| Vassaus #7 Rosebud County | 18 | 1959 | Low | Not Rated |
| Vaux #1 Richland County | 34 | 1960 | Low | Not Rated |
| Vaux #2 Richland County | 15 | 1960 | Low | Not Rated |
| V Dam Dawson County | 12 | 1957 | Low | Not Rated |
| V E G Gunderson Richland County | 16 | 1959 | Low | Not Rated |
| Velk Dam Hill County | 25 | 1958 | Low | Not Rated |
| Velvet Carter County | 10 | 1950 | Low | Not Rated |
| Venn #1 Custer County | 28 | 1936 | Significant | Not Rated |
| Venn #7 Custer County | 18 | 1960 | Low | Not Rated |
| Venn #8 Custer County | 17 | 1970 | Significant | Not Rated |
| Venn #9 Custer County | 17 | 1966 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.