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 2051–2075 of 2,606
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| C Steppler #1 Richland County | 18 | 1973 | Low | Not Rated |
| C Sowle Reservoir #2 Richland County | 20 | 1960 | Low | Not Rated |
| C Sowle Reservoir Richland County | 20 | 1940 | Low | Not Rated |
| C Smith #1 Powder River County | 22 | 1964 | Low | Not Rated |
| Crystal Lake Lincoln County | 30 | 1950 | Low | Not Rated |
| Crusch Pond Roosevelt County | 15 | 1966 | Low | Not Rated |
| Crow #69 Big Horn County | 15 | 1955 | Low | Not Rated |
| Crow #68 Big Horn County | 20 | 1959 | Low | Not Rated |
| Crow #47 Big Horn County | 18 | 1959 | Low | Not Rated |
| Crow #46 Big Horn County | 26 | 1959 | Low | Not Rated |
| Crow #32 Big Horn County | 14 | 1955 | Low | Not Rated |
| Crow #3 Big Horn County | 21 | 1950 | Low | Not Rated |
| Crow #19 Big Horn County | 10 | 1934 | Low | Not Rated |
| Crow #12 Big Horn County | 18 | 1960 | Low | Not Rated |
| Crow #1 McCone County | 30 | 1950 | Low | Not Rated |
| Cross Sanders County | 10 | 1963 | Low | Not Rated |
| Crosby #4 Rosebud County | 28 | 1967 | Low | Not Rated |
| Crosby #3 Rosebud County | 18 | 1967 | Low | Not Rated |
| Crooked Man Dam Toole County | 25 | 1960 | Low | Not Rated |
| Creedman Coulee Dam Hill County | 22 | 1938 | Low | Fair |
| Crazy Creek Reservoir Fergus County | 30 | 1946 | Low | Not Rated |
| Crandall Reservoir Roosevelt County | 20 | 1937 | Low | Not Rated |
| Cramer (Sweet Grass) Sweet Grass County | 15 | 1960 | Low | Not Rated |
| Cowan Reservoir Chouteau County | 20 | 1936 | Low | Not Rated |
| Courtney Herefords #3 Carter County | 14 | 1960 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.