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 |
|---|---|---|---|---|---|---|---|
| Cap Rock #1 | Montana | Custer | 20 | Low | - | 1966 | Fire Protection, Stock, Or ... |
| Shaw Reservoir (Garfield) | Montana | Garfield | 20 | Low | - | 1948 | Fire Protection, Stock, Or ... |
| Leachman #4 | Montana | Yellowstone | 20 | Low | - | 1979 | Fire Protection, Stock, Or ... |
| Ryan (Garfield) | Montana | Garfield | 20 | Low | - | 1968 | Fire Protection, Stock, Or ... |
| Sandman #1 | Montana | Petroleum | 20 | Low | - | 1960 | Irrigation |
| Thompson, Frank | Montana | Lewis and Clark | 20 | Low | - | 1972 | Irrigation |
| Curran-Barrett #2 | Montana | Lewis and Clark | 20 | Low | - | 1899 | Irrigation |
| Bateman #1 | Montana | Garfield | 20 | Low | - | 1973 | Irrigation |
| Glacier Lake South Dam | Montana | Carbon | 20 | High | Satisfactory | 1937 | Irrigation |
| Hunnes #1 | Montana | Rosebud | 20 | Low | - | 1929 | Fire Protection, Stock, Or ... |
| Vogele Reservoir | Montana | Dawson | 20 | Low | - | 1950 | Irrigation |
| Leachman #1 | Montana | Yellowstone | 20 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Ghost #1 | Montana | Valley | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Garverich #1 | Montana | Treasure | 20 | Low | - | 1952 | Fire Protection, Stock, Or ... |
| Scott Ranch | Montana | Pondera | 20 | Low | - | 1961 | Irrigation |
| Jim Judisch | Montana | Toole | 20 | Low | - | 1977 | Fire Protection, Stock, Or ... |
| Johnson #1 | Montana | Rosebud | 20 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Instant Tang | Montana | Carter | 20 | Low | - | 1954 | Fire Protection, Stock, Or ... |
| Mcslay,John Estate | Montana | Hill | 20 | Low | - | 1947 | Fire Protection, Stock, Or ... |
| Ivy | Montana | Musselshell | 20 | Low | - | 1974 | Fire Protection, Stock, Or ... |
| Vassaus #11 | Montana | Rosebud | 20 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Archie #1 | Montana | Garfield | 20 | Low | - | 1959 | Fire Protection, Stock, Or ... |
| Eva Murphy #4 | Montana | Fergus | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Hunter (Valley) | Montana | Valley | 20 | Low | - | 1963 | Irrigation |
| Harmes Dam | Montana | Prairie | 20 | Low | Not Rated | - | |
| J B and R Haversland | Montana | Daniels | 20 | Low | - | 1959 | Fire Protection, Stock, Or ... |
| Dry Fields | Montana | Beaverhead | 20 | Low | - | 1965 | Irrigation |
| Lower Blacktail Reservoir | Montana | Rosebud | 20 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Dr Lee #1 | Montana | Yellowstone | 20 | Low | - | 1979 | Fire Protection, Stock, Or ... |
| C Sowle Reservoir #2 | Montana | Richland | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| South Fork Reservoir | Montana | Silver Bow | 20 | Significant | - | 1946 | Fire Protection, Stock, Or ... |
| Horgan Reservoir | Montana | Valley | 20 | Low | - | 1952 | Fire Protection, Stock, Or ... |
| Pr-156 Retention Dam | Montana | Phillips | 20 | Low | Not Rated | 1937 | Flood Risk Reduction |
| Buffalo Hill | Montana | Garfield | 20 | Significant | - | 1936 | Irrigation |
| Whitetail Detention Dam | Montana | Carter | 20 | Low | Poor | 1966 | Fire Protection, Stock, Or ... |
| Ivy #3 | Montana | Musselshell | 20 | Low | - | 1974 | Fire Protection, Stock, Or ... |
| Sumo | Montana | Chouteau | 20 | Low | - | 1934 | Fire Protection, Stock, Or ... |
| Kistner Hardy Dam | Montana | Gallatin | 20 | High | Satisfactory | 1945 | Fire Protection, Stock, Or ... |
| Good | Montana | McCone | 19 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Hook #67 | Montana | Rosebud | 19 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| North Beaver Detention Dam | Montana | Valley | 19 | Low | Unsatisfactory | 1957 | Flood Risk Reduction |
| Balsam #6 | Montana | Custer | 19 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Todd #1 | Montana | Custer | 19 | Low | - | 1936 | Irrigation |
| Br-52 Retention Dam | Montana | Blaine | 19 | Low | Not Rated | 1937 | Flood Risk Reduction |
| Lockie #2 | Montana | Custer | 19 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Claribell #11 Dam | Montana | Garfield | 19 | Low | Unsatisfactory | - | |
| 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 ... |
| Liming Reservoir | Montana | Big Horn | 19 | Low | - | 1960 | Fire Protection, Stock, Or ... |
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.