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 |
|---|---|---|---|---|---|---|---|
| E Hardy #4 | Montana | Custer | 24 | Low | — | 1974 | Fire Protection, Stock, Or ... |
| Rafferty #4 | Montana | Custer | 24 | Low | — | 1957 | Fire Protection, Stock, Or ... |
| Moore #7 | Montana | Custer | 24 | Low | — | 1959 | Fire Protection, Stock, Or ... |
| Peters #2 | Montana | Fergus | 24 | Low | — | 1961 | Irrigation |
| Petranek | Montana | Fergus | 24 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| Twitchell #1 | Montana | Garfield | 24 | Low | — | 1960 | Irrigation |
| Styer #2 | Montana | Fergus | 24 | Low | — | 1961 | Irrigation |
| Barley Reservoir | Montana | Rosebud | 24 | Significant | — | 1958 | Irrigation |
| French #12 | Montana | Custer | 24 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Penny | Montana | Carter | 24 | Significant | — | 1950 | Irrigation |
| Erickson | Montana | Richland | 23 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Shipley Reservoir (Powder R.) | Montana | Powder River | 23 | Low | — | 1961 | Irrigation |
| School #2 | Montana | Garfield | 23 | Low | — | 1954 | Fire Protection, Stock, Or ... |
| Downs, Jack | Montana | Dawson | 23 | Low | — | 1938 | Irrigation |
| Lars Borg | Montana | Richland | 23 | Significant | — | 1977 | Fire Protection, Stock, Or ... |
| Karen #7 | Montana | Garfield | 23 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Tomahawk Detention Dam | Montana | Valley | 23 | Low | Unsatisfactory | 1962 | Flood Risk Reduction |
| Deadmans Basin Dike | Montana | Wheatland | 23 | High | Satisfactory | 1941 | Irrigation |
| Vr-80 Retention Dam | Montana | Valley | 23 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Allen #6 | Montana | Powder River | 23 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Ringstveit Reservoir | Montana | Rosebud | 23 | Low | — | 1976 | Fire Protection, Stock, Or ... |
| Chico Flats | Montana | Valley | 23 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Blackfoot Detention Dam | Montana | Carter | 23 | Low | Unsatisfactory | 1959 | Fire Protection, Stock, Or ... |
| Engdahl #6 | Montana | Garfield | 23 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| O'Halloran #1 | Montana | Park | 23 | Low | — | 1958 | Irrigation |
| Hirsch #1 | Montana | Custer | 23 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Willow Creek BOR MT-Dike 5 | Montana | Lewis and Clark | 23 | High | Not Available | 1940 | Irrigation |
| Big Timber #49 | Montana | Rosebud | 23 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Sterret | Montana | Meagher | 23 | Low | — | 1910 | Irrigation |
| Lower Baker Dam | Montana | Fallon | 23 | High | Satisfactory | 1908 | Recreation |
| Scott #2 | Montana | Custer | 23 | Low | — | 1944 | Fire Protection, Stock, Or ... |
| Wicker Basket #1 | Montana | Fergus | 23 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Rogers #2 | Montana | Custer | 23 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Hurricane Detention Dam | Montana | Valley | 23 | Low | Unsatisfactory | 1957 | Fire Protection, Stock, Or ... |
| Murnion Dam | Montana | Garfield | 23 | Low | — | — | Irrigation |
| Br-12 Retention Dam | Montana | Blaine | 23 | High | Satisfactory | 1936 | Flood Risk Reduction |
| Binions Reservoir #2 | Montana | Garfield | 23 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| O'Halloran | Montana | Park | 23 | Significant | — | 1960 | Irrigation |
| O'Haire | Montana | Toole | 23 | Low | — | 1954 | Irrigation |
| Arthun Dam | Montana | Park | 23 | Significant | — | 1956 | Irrigation |
| Cornwell | Montana | Valley | 23 | Significant | — | 1952 | Irrigation |
| Hamster | Montana | Wibaux | 23 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Saskview Dam | Montana | Valley | 23 | Low | Not Rated | 2003 | |
| Beecher #3 | Montana | Garfield | 23 | Low | — | 1973 | Fire Protection, Stock, Or ... |
| Binion #3 | Montana | Garfield | 23 | Significant | — | 1945 | Fire Protection, Stock, Or ... |
| Lois Lake | Montana | Powell | 23 | Low | — | 1966 | Irrigation |
| Ward Dam | Montana | Valley | 23 | Low | Fair | 2003 | Fish and Wildlife Pond |
| Pr-19 Retention Dam | Montana | Phillips | 23 | High | Satisfactory | 1936 | Fire Protection, Stock, Or ... |
| Helluva | Montana | Fergus | 22 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Schlesinger #7 | Montana | Rosebud | 22 | Low | — | 1952 | 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.