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 76–100 of 193
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hudiburgh McCone County | 20 | 1937 | Significant | Not Rated |
| Jackson #1 Madison County | 19 | 1924 | Significant | Not Rated |
| Jeffrey #2 Garfield County | 25 | 1922 | Significant | Not Rated |
| J Jacobsen #1 Daniels County | 15 | 1964 | Significant | Not Rated |
| John Ball Reservoir McCone County | 16 | 1935 | Significant | Not Rated |
| Johnson, Howard (Pondera) Pondera County | 15 | 1939 | Significant | Not Rated |
| J R Scott #1 Big Horn County | 10 | 1953 | Significant | Not Rated |
| Jurica #1 Powder River County | 25 | 1941 | Significant | Not Rated |
| Kaiser Park County | 20 | 1964 | Significant | Not Rated |
| Keep Cool Meagher County | 30 | 1950 | Significant | Not Rated |
| Kerns (Rosebud) Rosebud County | 25 | 1960 | Significant | Not Rated |
| Kheta Chouteau County | 25 | 1960 | Significant | Not Rated |
| Kona Ranch Missoula County | 29 | 1959 | Significant | Not Rated |
| Kuester Richland County | 32 | 1958 | Significant | Not Rated |
| Kuhr #2 Blaine County | 20 | 1930 | Significant | Not Rated |
| Lars Borg Richland County | 23 | 1977 | Significant | Not Rated |
| Lebo #2 Ne Dam Wheatland County | 15 | 1969 | Significant | Fair |
| Linde Richland County | 28 | 1949 | Significant | Not Rated |
| Little Lake Missoula County | 25 | 1912 | Significant | Not Rated |
| Little Phantom Chouteau County | 10 | 1935 | Significant | Not Rated |
| Lower Indian Creek Reservoir Big Horn County | 15 | 1950 | Significant | Not Rated |
| Lower Taylor Dam Powell County | 21 | — | Significant | Not Rated |
| Malkuch Dawson County | 15 | 1953 | Significant | Not Rated |
| Manchester Cascade County | 8 | — | Significant | Not Rated |
| Manley #2 Powell County | 25 | 1964 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.