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 501–525 of 2,990
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Christensen #8 Custer County | 26 | 1938 | Low | Not Rated |
| Christensen L&C #1 Big Horn County | 12 | 1958 | Low | Not Rated |
| Christensen L&C #2 Big Horn County | 13 | 1958 | Low | Not Rated |
| Christensen (Richland) Richland County | 38 | 1970 | Low | Not Rated |
| Christenson Garfield County | 15 | 1965 | Low | Not Rated |
| Christian Toole County | 8 | 1938 | Low | Not Rated |
| Christianson McCone County | 29 | 1960 | Low | Not Rated |
| Christmas Dam #1 Garfield County | 15 | 1960 | Low | Not Rated |
| Christopher Columbus Powell County | 20 | 1962 | Low | Not Rated |
| Chuck Blaine County | 15 | 1949 | Low | Not Rated |
| Chuck #1 Garfield County | 30 | 1960 | Low | Not Rated |
| Cimrhakl #3 Fergus County | 20 | 1949 | Low | Not Rated |
| Cimrhakl #4 Fergus County | 20 | 1920 | Low | Not Rated |
| Cimrhakle #2 Fergus County | 20 | 1955 | Low | Not Rated |
| Cinnamon #1 Wheatland County | 15 | 1972 | Low | Not Rated |
| Cinnamon #10 Wheatland County | 20 | 1947 | Low | Not Rated |
| Cinnamon #2 Wheatland County | 19 | 1974 | Low | Not Rated |
| Cinnamon #3 Wheatland County | 20 | 1976 | Low | Not Rated |
| Cinnamon #4 Wheatland County | 30 | 1973 | Low | Not Rated |
| Cinnamon #6 Wheatland County | 15 | 1967 | Low | Not Rated |
| Circle Reservoir Dawson County | 15 | 1950 | Low | Not Rated |
| Circut Breaker Chouteau County | 10 | 1920 | Low | Not Rated |
| Clamhopper #1 Petroleum County | 20 | 1960 | Low | Not Rated |
| Clara McCone County | 30 | 1940 | Low | Not Rated |
| Claribell #10 Garfield County | 18 | 1964 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.