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 2126–2150 of 2,606
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Cloakus Toole County | 15 | 1947 | Low | Not Rated |
| Cline #3 Carter County | 8 | 1947 | Low | Not Rated |
| Cline #2 Carter County | 15 | 1946 | Low | Not Rated |
| Clem-Reid #1 Carter County | 35 | 1957 | Low | Not Rated |
| Clem Richland County | 12 | 1944 | Low | Not Rated |
| Clausen Phillips County | 20 | 1938 | Low | Not Rated |
| Clark Retention Dam Prairie County | 28 | 2003 | Low | Not Rated |
| Clark (Prairie) Prairie County | 30 | 1938 | Low | Not Rated |
| Clark (Garfield) Garfield County | 20 | 1951 | Low | Not Rated |
| Clark (Custer) Custer County | 16 | 1958 | Low | Not Rated |
| Clark #2 Rosebud County | 18 | 1960 | Low | Not Rated |
| Claribell #9 Garfield County | 34 | 1965 | Low | Not Rated |
| Claribell #8 Garfield County | 24 | 1965 | Low | Not Rated |
| Claribell #7 Garfield County | 24 | 1963 | Low | Not Rated |
| Claribell #6 Garfield County | 25 | 1961 | Low | Not Rated |
| Claribell #5 Garfield County | 33 | 1956 | Low | Not Rated |
| Claribell #3 Garfield County | 30 | 1957 | Low | Not Rated |
| Claribell #2 Garfield County | 20 | 1930 | Low | Not Rated |
| Claribell #11 Dam Garfield County | 19 | — | Low | Unsatisfactory |
| Claribell #10 Garfield County | 18 | 1964 | Low | Not Rated |
| Clara McCone County | 30 | 1940 | Low | Not Rated |
| Clamhopper #1 Petroleum County | 20 | 1960 | Low | Not Rated |
| Circut Breaker Chouteau County | 10 | 1920 | Low | Not Rated |
| Circle Reservoir Dawson County | 15 | 1950 | Low | Not Rated |
| Cinnamon #6 Wheatland County | 15 | 1967 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.