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 2526–2550 of 2,990
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Chapman Dam Valley County | 14 | 2003 | Low | Not Rated |
| Chanlin Phillips County | 27 | 1951 | Low | Not Rated |
| Chambers Valley County | 15 | 1948 | Low | Not Rated |
| Chalk #1 Garfield County | 18 | 1960 | Low | Not Rated |
| Chabot Reservoir Dam #2 Daniels County | 8 | 1999 | Low | Not Rated |
| Chabot Reservoir Daniels County | 25 | 1964 | Low | Not Rated |
| Cement Dam Fergus County | 20 | 1936 | Low | Not Rated |
| Cedar Creek Flathead County | 93 | 1971 | High | Satisfactory |
| Cecrle #1 Dam Judith Basin County | 30 | 1960 | Low | Not Rated |
| Cbc Dam Garfield County | 27 | 1958 | Low | Not Rated |
| Cattle Dam Custer County | 19 | 1945 | Low | Not Rated |
| Cataract Creek Dam Madison County | 80 | 1959 | High | Unsatisfactory |
| Castor (Choteau) Chouteau County | 20 | 1960 | Low | Not Rated |
| Castor Toole County | 30 | 1914 | Low | Not Rated |
| Castle Rock Saddle Dam Rosebud County | 20 | 1976 | High | Satisfactory |
| Castle Rock Reservoir Dam Rosebud County | 67 | 1976 | High | Satisfactory |
| Caruthers Lake Powell County | 11 | 1973 | Low | Not Available |
| Carters Reservoir Phillips County | 25 | 1954 | Low | Not Rated |
| Carter Pond, Upper (Fergus) Fergus County | 21 | 1951 | Significant | Not Rated |
| Carter Pond, Lower (Fergus) Fergus County | 21 | 1938 | Significant | Not Rated |
| Carson (Mn-66) Blaine County | 45 | 1940 | Low | Not Rated |
| Carpenter Creek Valley County | 16 | 1950 | Low | Not Rated |
| Carlton Lake #1 Missoula County | 22 | 1899 | High | Not Rated |
| Carbone Flood Control Dam Big Horn County | 32 | 2002 | High | Satisfactory |
| Capudj Hill County | 10 | 1965 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.