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 2826–2850 of 2,990
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Vredenburg Dam Lincoln County | 15 | 1970 | Low | Not Rated |
| Vt #1 Rosebud County | 15 | 1953 | Low | Not Rated |
| Wackle McCone County | 12 | 1944 | Low | Not Rated |
| Wagner Valley County | 7 | 1962 | Low | Not Rated |
| Wahl Stock Reservoir McCone County | 20 | 1933 | Low | Not Rated |
| Walden Liberty County | 30 | 1937 | Low | Not Rated |
| Waldo #2 Garfield County | 15 | 1950 | Low | Not Rated |
| Wales Creek Reservoir Powell County | 20 | 1953 | Low | Not Rated |
| Wales-Meyer Pond 2 Powell County | 18 | 1991 | Low | Not Rated |
| Walker #1 Musselshell County | 10 | 1960 | Low | Not Rated |
| Walker #2 (Dawson) Dawson County | 11 | 1966 | Low | Not Rated |
| Walkerville McCone County | 21 | 1939 | Low | Not Rated |
| Wallenstein Carter County | 20 | 1945 | Low | Not Rated |
| Waller McCone County | 28 | 1950 | Low | Not Rated |
| Walstom Pondera County | 10 | 1920 | Significant | Not Rated |
| Wanken Toole County | 30 | 1928 | Significant | Not Rated |
| Wapiti Dam Phillips County | 25 | 1984 | Low | Not Rated |
| Ward Dam Valley County | 23 | 2003 | Low | Fair |
| Warmbrod Roosevelt County | 20 | 1945 | Low | Not Rated |
| Waro Reservoir Roosevelt County | 20 | 1946 | Low | Not Rated |
| Warren Weaver #1 Fergus County | 18 | 1964 | Low | Not Rated |
| Waterman Chouteau County | 20 | 1945 | Low | Not Rated |
| Waters #5 McCone County | 24 | 1907 | Low | Not Rated |
| Waters Dam #1 McCone County | 24 | 1949 | Low | Not Rated |
| Watson #1 Rosebud County | 15 | 1975 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.