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 |
|---|---|---|---|---|---|---|---|
| Killen #3 | Montana | Rosebud | 16 | Low | — | 1952 | Irrigation |
| Stevens #1 | Montana | Rosebud | 16 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Reichert #1 | Montana | Custer | 16 | Low | — | 1944 | Fire Protection, Stock, Or ... |
| Grimes Dam | Montana | Custer | 16 | Low | — | 1950 | Irrigation |
| Big Dumb Bunny | Montana | Cascade | 16 | Low | — | 1972 | Fire Protection, Stock, Or ... |
| Langohr #1 | Montana | Rosebud | 16 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Clark (Custer) | Montana | Custer | 16 | Low | — | 1958 | Irrigation |
| Pluto | Montana | Chouteau | 16 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Vassaus #5 | Montana | Rosebud | 16 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Lockie #7 | Montana | Custer | 16 | Low | — | 1961 | Fire Protection, Stock, Or ... |
| Jennaway #1 | Montana | Musselshell | 16 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Double N Ranch | Montana | Lincoln | 16 | Significant | — | 1965 | Recreation |
| Hanson #1 | Montana | Custer | 16 | Low | — | 1949 | Fire Protection, Stock, Or ... |
| Beaver Tooth | Montana | Valley | 16 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Stratton Reservoir | Montana | Phillips | 16 | Low | — | 1945 | Irrigation |
| Zinger #1 | Montana | Richland | 16 | Low | — | 1960 | Flood Risk Reduction |
| Killen #4 | Montana | Rosebud | 16 | Low | — | 1954 | Fire Protection, Stock, Or ... |
| Kniep Kamp | Montana | McCone | 16 | Low | — | 1941 | Irrigation |
| Ross Dam | Montana | Garfield | 16 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Carpenter Creek | Montana | Valley | 16 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Hintz | Montana | McCone | 16 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Hook #23 | Montana | Rosebud | 16 | Low | — | 1935 | Fire Protection, Stock, Or ... |
| Setinc #1 | Montana | Carter | 16 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Hook #61 | Montana | Rosebud | 16 | Low | — | 1957 | Fire Protection, Stock, Or ... |
| Saucer #2 | Montana | Prairie | 16 | Low | — | 1962 | Fire Protection, Stock, Or ... |
| Beecher #6 | Montana | Garfield | 16 | Low | — | 1966 | Fire Protection, Stock, Or ... |
| Mckinnsey Reservoir | Montana | Hill | 16 | Low | — | 1914 | Irrigation |
| Brady #2 | Montana | Petroleum | 16 | Low | — | 1967 | Fire Protection, Stock, Or ... |
| Lockie #4 | Montana | Custer | 16 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Jamgo #1 | Montana | Musselshell | 16 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Cope | Montana | Fergus | 16 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Couch Coulee #1 | Montana | Hill | 16 | Low | — | 1918 | Fire Protection, Stock, Or ... |
| Erb #1 | Montana | Big Horn | 16 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Campbell #1 | Montana | Big Horn | 16 | Low | — | 1954 | Fire Protection, Stock, Or ... |
| Boies | Montana | Rosebud | 16 | Low | — | 1958 | Irrigation |
| Foss | Montana | Richland | 16 | Low | — | 1964 | Irrigation |
| Ottun #6 | Montana | Big Horn | 16 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Padden #2 | Montana | Carter | 16 | Low | — | 1971 | Irrigation |
| Peterson #1 | Montana | Big Horn | 16 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| Box Office | Montana | Hill | 16 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Lindstrom | Montana | Fallon | 16 | Low | — | 1952 | Irrigation |
| Virgil Larson | Montana | Wibaux | 16 | Low | — | 1977 | Irrigation |
| Cherry Creek #1 | Montana | Rosebud | 16 | Low | — | 1943 | Fire Protection, Stock, Or ... |
| Bobs Mud Lake | Montana | Hill | 16 | Low | — | 1976 | Fire Protection, Stock, Or ... |
| Dees Brothers | Montana | Hill | 16 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| Long Horn #4 | Montana | Valley | 16 | Low | — | 1952 | Fire Protection, Stock, Or ... |
| Havre Reservoir | Montana | Fergus | 16 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Adams #2 | Montana | Fergus | 16 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Big Reservoir | Montana | Rosebud | 16 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Swan Dam | Montana | Toole | 16 | Low | Not Rated | 2003 |
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.