Browse Dams
3,029 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 3,029 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.
| Name | State | County | Height (ft) | Hazard | Condition | Year | Purpose |
|---|---|---|---|---|---|---|---|
| 26n9e22 | Montana | Chouteau | 22 | Low | — | — | Water Supply |
| Ryan-Tronrud Dam | Montana | Sweet Grass | 22 | Significant | — | 1956 | Irrigation |
| California Coulee | Montana | Hill | 22 | Low | — | 1955 | Flood Risk Reduction |
| French #15 | Montana | Rosebud | 22 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Antelope Creek Reservoir | Montana | McCone | 22 | Low | — | 1944 | Fire Protection, Stock, Or ... |
| Drum No 2 | Montana | Carbon | 22 | Low | — | 1950 | Irrigation |
| Ninemile Dam Lake #1 | Montana | Hill | 22 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Taylor Fish (Fergus) | Montana | Fergus | 22 | Low | — | 1951 | Recreation |
| Collins | Montana | Valley | 22 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Kiemle | Montana | Hill | 22 | Low | — | 1938 | Irrigation |
| Bowman Lake 1 | Montana | Powell | 22 | Low | Not Available | 1958 | Irrigation |
| B Shaw #1 | Montana | Petroleum | 22 | Low | — | 1947 | Irrigation |
| Lion Lake Dam | Montana | Flathead | 22 | High | Not Rated | 1948 | Recreation |
| Chocolate Milkshake | Montana | Garfield | 22 | Low | — | 1962 | Fire Protection, Stock, Or ... |
| Crisafulli Lake | Montana | Dawson | 22 | High | Satisfactory | 1959 | Irrigation |
| Hamen Reservoir | Montana | Meagher | 22 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Philbrick #3 | Montana | Rosebud | 22 | Low | — | 1971 | Fire Protection, Stock, Or ... |
| Creedman Coulee Dam | Montana | Hill | 22 | Low | Fair | 1938 | Fish and Wildlife Pond |
| Judy Detention Dam | Montana | Valley | 22 | Low | Satisfactory | 1960 | Fire Protection, Stock, Or ... |
| Upper Glasston West Dam | Montana | Sweet Grass | 22 | High | Poor | 1912 | Irrigation |
| Helluva | Montana | Fergus | 22 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Lake Frances North Dam | Montana | Pondera | 22 | High | Satisfactory | 1909 | Irrigation |
| Lakeside | Montana | Yellowstone | 22 | High | Satisfactory | — | Recreation |
| Christensen #6 | Montana | Custer | 22 | Low | — | 1961 | Fire Protection, Stock, Or ... |
| Jones #4 | Montana | Custer | 22 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Wyrick | Montana | Fallon | 22 | Low | — | 1984 | Irrigation |
| T L Johnson #1 | Montana | Rosebud | 22 | Low | — | 1957 | Fire Protection, Stock, Or ... |
| Hofer 2 | Montana | Toole | 22 | Low | — | 1977 | Irrigation |
| Saylor Reservoir | Montana | Garfield | 22 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Hofer 1 | Montana | Liberty | 22 | Low | — | 1977 | Irrigation |
| Peace Pond | Montana | Ravalli | 22 | High | Satisfactory | 1960 | Irrigation |
| Pintail Dam | Montana | Carter | 22 | Low | Not Rated | 2003 | |
| Schlesinger #2 | Montana | Rosebud | 22 | Low | — | 1954 | Irrigation |
| T-Diamond #1 | Montana | Custer | 22 | Low | — | 1961 | Fire Protection, Stock, Or ... |
| Big Sky County Wastewater Pond3 | Montana | Gallatin | 22 | High | Not Rated | 1997 | Other |
| Gussie #3 | Montana | Carter | 22 | Low | — | 1975 | Fire Protection, Stock, Or ... |
| Apache Dam | Montana | Carter | 22 | Low | Satisfactory | — | Flood Risk Reduction |
| Weson | Montana | Valley | 22 | Low | — | 1951 | Irrigation |
| South Meadow Creek Dam | Montana | Madison | 22 | High | Not Available | 1968 | Irrigation |
| L and L | Montana | Custer | 22 | Low | — | 1939 | Fire Protection, Stock, Or ... |
| Colver | Montana | Fergus | 22 | Low | — | 1939 | Irrigation |
| Gregg #1 | Montana | Garfield | 22 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Us #25 | Montana | Garfield | 22 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Iverson Retention Dam | Montana | Petroleum | 22 | Low | Poor | 1968 | Flood Risk Reduction |
| Just Barely | Montana | Pondera | 22 | Low | — | 1964 | Recreation |
| Moccasin Detention Dam | Montana | Valley | 22 | Low | Unsatisfactory | 1957 | Fire Protection, Stock, Or ... |
| Chinook, North | Montana | Blaine | 22 | Low | — | 1910 | Irrigation |
| Danelson Reservoir | Montana | Daniels | 22 | Low | — | 1968 | Recreation |
| Schlesinger #7 | Montana | Rosebud | 22 | Low | — | 1952 | Irrigation |
| Karen #3 | Montana | Garfield | 22 | Low | — | 1974 | Irrigation |
Frequently Asked Questions
Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.
Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.
Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.