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 |
|---|---|---|---|---|---|---|---|
| Ghost #2 | Montana | Valley | 30 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Wild Flower | Montana | Musselshell | 30 | Low | — | 1966 | Fire Protection, Stock, Or ... |
| Gritty Milk | Montana | Hill | 30 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| Petticoat Junction | Montana | Fergus | 30 | Low | — | 1963 | Fire Protection, Stock, Or ... |
| Big Lake | Montana | Missoula | 30 | Significant | — | 1915 | Water Supply |
| Knockin'Knees Reservoir | Montana | Liberty | 30 | Low | — | 1952 | Fire Protection, Stock, Or ... |
| Crystal Lake | Montana | Lincoln | 30 | Low | — | 1950 | Other |
| Birkeland Reservoir | Montana | Chouteau | 30 | Low | — | 1950 | Other |
| Roamin'Reservoir | Montana | Chouteau | 30 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Charangus | Montana | Garfield | 30 | Low | — | 1936 | Irrigation |
| L&V Rowten #1 | Montana | Petroleum | 30 | Low | — | 1963 | Fire Protection, Stock, Or ... |
| Loubren INCorporated #1 | Montana | Toole | 30 | Low | — | 1940 | Water Supply |
| Quick (L.) | Montana | McCone | 30 | Low | — | 1968 | Irrigation |
| Needle Butte Reservoir | Montana | Rosebud | 30 | Low | — | 1953 | Fire Protection, Stock, Or ... |
| Herzog #1 | Montana | Custer | 30 | Low | — | 1952 | Fire Protection, Stock, Or ... |
| Haymaker Dam | Montana | Wheatland | 30 | Low | — | 1978 | Fire Protection, Stock, Or ... |
| Brown Buffalo #1 | Montana | Yellowstone | 30 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Leidholt Dam | Montana | Custer | 30 | Low | Not Rated | — | |
| Complimentary | Montana | Judith Basin | 30 | Low | — | 1950 | Irrigation |
| Ed Styer #3 | Montana | Fergus | 30 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| D G Orchowski #2 | Montana | Big Horn | 30 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| Mcintyre Reservoir | Montana | Toole | 30 | Significant | — | 1930 | Fire Protection, Stock, Or ... |
| Buffalo Wallow Dam | Montana | Fergus | 30 | Low | Not Rated | — | |
| Mesaros | Montana | Cascade | 30 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| Billings #3 | Montana | Garfield | 30 | Low | — | 1938 | Irrigation |
| Agnes Bob and Noel | Montana | Chouteau | 30 | Low | — | 1957 | Fire Protection, Stock, Or ... |
| Jo | Montana | Fergus | 30 | Low | — | 1962 | Fire Protection, Stock, Or ... |
| Mcmullin Bros Cooperative | Montana | Prairie | 30 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| Olson (Garfield) | Montana | Garfield | 30 | Low | — | 1960 | Irrigation |
| Bass (Rosebud) | Montana | Rosebud | 30 | Low | — | 1963 | Fire Protection, Stock, Or ... |
| Eagle Land #1 | Montana | Big Horn | 30 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Mcmullin Bros Detention | Montana | Prairie | 30 | Low | — | 1966 | Fire Protection, Stock, Or ... |
| Letz Lake | Montana | Pondera | 30 | Low | — | 1952 | Fire Protection, Stock, Or ... |
| Crow #2 | Montana | McCone | 30 | Significant | — | 1973 | Fire Protection, Stock, Or ... |
| Brown Coulee (Rosebud) | Montana | Rosebud | 30 | Low | — | 1950 | Irrigation |
| Grove Gulch | Montana | Silver Bow | 30 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| Murray | Montana | Fergus | 30 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Bs Kincheloe | Montana | Rosebud | 30 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Dawson Ranch #1 | Montana | Cascade | 30 | Low | — | 1948 | Flood Risk Reduction |
| Keil Ranch Reservoir #1 | Montana | Pondera | 30 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Fowler #1 (Pondera) | Montana | Pondera | 30 | Low | — | 1909 | Fire Protection, Stock, Or ... |
| Vaira | Montana | Richland | 30 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Red | Montana | Fergus | 30 | Significant | — | 1963 | Fire Protection, Stock, Or ... |
| Traweek #2 | Montana | Fallon | 30 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| Dick Golie Wildlife Dam | Montana | Cascade | 30 | Low | — | 1965 | Recreation |
| Balsam #3 | Montana | Custer | 30 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Bull Pen #2 | Montana | Pondera | 30 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Edward Enterprises | Montana | Hill | 30 | Low | — | 1978 | Fire Protection, Stock, Or ... |
| Gearhart #13 | Montana | Rosebud | 30 | Low | — | 1953 | Fire Protection, Stock, Or ... |
| Olson (Prairie) | Montana | Prairie | 30 | Low | — | 1963 | 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.