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 |
|---|---|---|---|---|---|---|---|
| Buddle #1 | Montana | Custer | 19 | Low | - | 1949 | Fire Protection, Stock, Or ... |
| Tin Cup Lake (Powell) | Montana | Powell | 19 | High | Fair | 1965 | Irrigation |
| Felt Coulee Dam | Montana | Petroleum | 19 | Low | - | 1971 | Irrigation |
| Dubbe Reservoir | Montana | Valley | 19 | Low | - | 1937 | Fire Protection, Stock, Or ... |
| Balsam #6 | Montana | Custer | 19 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Todd #1 | Montana | Custer | 19 | Low | - | 1936 | Irrigation |
| Larson #2 | Montana | Custer | 19 | Low | - | 1963 | Fire Protection, Stock, Or ... |
| Lori Detention Dam | Montana | Valley | 19 | Low | Unsatisfactory | 1964 | Flood Risk Reduction |
| Underdal #1 | Montana | Toole | 19 | Low | - | 1963 | Recreation |
| Coal Creek Dam #1 | Montana | Custer | 19 | Low | - | 1949 | Fire Protection, Stock, Or ... |
| Jackson #1 | Montana | Madison | 19 | Significant | - | 1924 | Irrigation |
| Taylor (Garfield) | Montana | Garfield | 19 | Low | - | 1968 | Other |
| Robinson #7 | Montana | Custer | 19 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Wood (Toole) | Montana | Toole | 19 | Low | - | 1963 | Irrigation |
| Cattle Dam | Montana | Custer | 19 | Low | - | 1945 | Fire Protection, Stock, Or ... |
| North Beaver Detention Dam | Montana | Valley | 19 | Low | Unsatisfactory | 1957 | Flood Risk Reduction |
| Grant Dam | Montana | Prairie | 19 | Low | Not Rated | - | |
| Buffalo | Montana | Valley | 19 | Low | - | 1910 | Irrigation |
| Sweo | Montana | Valley | 19 | Low | - | 1945 | Fire Protection, Stock, Or ... |
| North Fork Plug Dam | Montana | Valley | 19 | Low | Unsatisfactory | - | |
| Lockie #2 | Montana | Custer | 19 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Fox #1 | Montana | Custer | 19 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Heble | Montana | Fergus | 19 | Low | - | 1954 | Fire Protection, Stock, Or ... |
| H M Scott #2 | Montana | Custer | 19 | Low | - | 1963 | Fire Protection, Stock, Or ... |
| Albert #1 | Montana | Fergus | 19 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Tuff Retention Dam | Montana | Valley | 19 | Low | Not Rated | 1975 | Flood Risk Reduction |
| Hand #3 | Montana | Phillips | 19 | Low | - | 1954 | Irrigation |
| Jim Detention Dam | Montana | Valley | 19 | Low | Satisfactory | 1964 | Flood Risk Reduction |
| Paddle Board | Montana | Chouteau | 19 | Low | - | 1972 | Irrigation |
| Zimmerman Retention Dam #1 | Montana | Petroleum | 19 | Low | Not Rated | 2003 | Fire Protection, Stock, Or ... |
| Albert #2 | Montana | Fergus | 19 | Low | - | 1936 | Fire Protection, Stock, Or ... |
| Hainie Reservoir | Montana | McCone | 19 | Low | - | 1942 | Fire Protection, Stock, Or ... |
| Sassy Top Deck | Montana | Hill | 19 | Low | - | 1938 | Fire Protection, Stock, Or ... |
| Eliasson (Petroleum) | Montana | Petroleum | 19 | Low | - | 1939 | Fire Protection, Stock, Or ... |
| Br-52 Retention Dam | Montana | Blaine | 19 | Low | Not Rated | 1937 | Flood Risk Reduction |
| Claribell #11 Dam | Montana | Garfield | 19 | Low | Unsatisfactory | - | |
| Rp Griffith #1 | Montana | Musselshell | 19 | Low | - | 1963 | Irrigation |
| Melstone Detention Dam | Montana | Musselshell | 19 | High | Unsatisfactory | 2003 | Fire Protection, Stock, Or ... |
| R Downs #6 | Montana | Big Horn | 19 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Hanson | Montana | Valley | 19 | Low | - | 1965 | Irrigation |
| Pear Lake Dam | Montana | Beaverhead | 19 | High | Poor | 1904 | Irrigation |
| Vanette'S Dam | Montana | Powder River | 19 | Significant | - | 1912 | Irrigation |
| Nefsy #1 | Montana | Custer | 19 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Wiggins #3 | Montana | Petroleum | 19 | Low | - | 1967 | Irrigation |
| Liming Reservoir | Montana | Big Horn | 19 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Jensen Reservoir (Dawson) | Montana | Dawson | 19 | Low | - | 1951 | Irrigation |
| Thelma #1 | Montana | Park | 19 | Low | - | 1962 | Irrigation |
| John Ragsdale Dam | Montana | Park | 19 | Low | - | 1980 | Irrigation |
| Cinnamon #2 | Montana | Wheatland | 19 | Low | - | 1974 | Irrigation |
| Lake Thibadeau Diversion Dam | Montana | Hill | 18 | Low | Satisfactory | 1938 | Fish and Wildlife Pond |
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.