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 426–450 of 2,606
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Chicken of The Sea Phillips County | 15 | — | Low | Not Rated |
| Chico Flats Valley County | 23 | 1956 | Low | Not Rated |
| Chinamans Dinner Chouteau County | 12 | 1930 | Low | Not Rated |
| Chinook, North Blaine County | 22 | 1910 | Low | Not Rated |
| Chip Dipper Chouteau County | 20 | 1956 | Low | Not Rated |
| Chocolate Milkshake Garfield County | 22 | 1962 | Low | Not Rated |
| Christensen #1 Roosevelt County | 25 | 1964 | Low | Not Rated |
| Christensen #1 (Meagher) Meagher County | 20 | 1950 | Low | Not Rated |
| Christensen #2 Roosevelt County | 18 | 1968 | Low | Not Rated |
| Christensen #2 (Meagher) Meagher County | 20 | 1965 | Low | Not Rated |
| Christensen #3 Custer County | 24 | 1955 | Low | Not Rated |
| Christensen #6 Custer County | 22 | 1961 | Low | Not Rated |
| 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 |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.