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 551–575 of 2,606
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Crusch Pond Roosevelt County | 15 | 1966 | Low | Not Rated |
| Crystal Lake Lincoln County | 30 | 1950 | Low | Not Rated |
| C Smith #1 Powder River County | 22 | 1964 | Low | Not Rated |
| C Sowle Reservoir Richland County | 20 | 1940 | Low | Not Rated |
| C Sowle Reservoir #2 Richland County | 20 | 1960 | Low | Not Rated |
| C Steppler #1 Richland County | 18 | 1973 | Low | Not Rated |
| Culver Springs Dam Beaverhead County | 9 | 1959 | Low | Unsatisfactory |
| Curran-Barrett #1 Lewis and Clark County | 15 | 1940 | Low | Not Rated |
| Curran-Barrett #2 Lewis and Clark County | 20 | 1899 | Low | Not Rated |
| Current Detention Dam Phillips County | 34 | 1969 | Low | Poor |
| Custer Creek Prairie County | 30 | 1962 | Low | Not Rated |
| Cut Bank Sewage Disposal Pond Glacier County | 20 | 1959 | Low | Not Rated |
| Cut Bank Sewage Lagoon Glacier County | 12 | 1959 | Low | Not Rated |
| Dabler Dam Meagher County | 20 | 1950 | Low | Not Rated |
| Dachau Pondera County | 15 | 1960 | Low | Not Rated |
| Dam #168 Valley County | 19 | — | Low | Not Rated |
| Dammel Reservoir Chouteau County | 21 | 1960 | Low | Not Rated |
| Damschen #2 Petroleum County | 25 | 1960 | Low | Not Rated |
| Dana-Cameron Ranch Cascade County | 20 | 1940 | Low | Not Rated |
| Danelson Reservoir Daniels County | 22 | 1968 | Low | Not Rated |
| Danial Downs #2 Dawson County | 14 | 1940 | Low | Not Rated |
| Danial Downs #4 Dawson County | 18 | 1940 | Low | Not Rated |
| Daniel #1 Hill County | 20 | 1960 | Low | Not Rated |
| Daniel #2 Hill County | 20 | 1954 | Low | Not Rated |
| Daniel #3 Hill County | 30 | 1976 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.