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 |
|---|---|---|---|---|---|---|---|
| Veseth and Veseth #3 Dam Pd | Montana | Phillips | 14 | Low | Not Rated | - | |
| Froze-To-Death Land CO #1 | Montana | Treasure | 14 | Low | - | 1958 | Fire Protection, Stock, Or ... |
| Doney Lake #2 (Powell) | Montana | Powell | 14 | High | Fair | 1942 | Irrigation |
| Tepee Detention Dam | Montana | Valley | 14 | Low | Unsatisfactory | 1958 | Fire Protection, Stock, Or ... |
| Sparrow Slough Dam | Montana | Beaverhead | 14 | Low | Fair | 1985 | Fish and Wildlife Pond |
| Alkali Detention Dam | Montana | Valley | 14 | Low | Unsatisfactory | 1958 | Fire Protection, Stock, Or ... |
| Frazer | Montana | Valley | 14 | Low | Not Rated | 1913 | Fire Protection, Stock, Or ... |
| Homestead Dam | Montana | Roosevelt | 14 | Low | Poor | 1953 | Fish and Wildlife Pond |
| Pilster Diversion One Dam | Montana | Carter | 14 | Low | Fair | 1960 | Irrigation |
| Nelson Dike D | Montana | Phillips | 14 | High | Not Available | 1922 | Irrigation |
| Nelson Dike B | Montana | Phillips | 14 | High | Not Available | 1922 | Irrigation |
| Upper Dry Fork East Dike | Montana | Sanders | 14 | Low | Poor | 1942 | Irrigation |
| Green Lake Dam | Montana | Pondera | 13 | Low | Not Available | 1939 | |
| Multiplier | Montana | Toole | 13 | Low | - | 1933 | Fire Protection, Stock, Or ... |
| Bomber | Montana | Valley | 13 | Low | - | 1953 | Flood Risk Reduction |
| Biggerstuf | Montana | Powder River | 13 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Colvin #2 | Montana | Custer | 13 | Low | - | 1946 | Fire Protection, Stock, Or ... |
| Cain Dam | Montana | Valley | 13 | Low | - | 1901 | Irrigation |
| Burkhartsmeyer Too | Montana | Hill | 13 | Low | - | 1950 | Irrigation |
| Green #6 | Montana | Powder River | 13 | Low | - | 1943 | Fire Protection, Stock, Or ... |
| Hanson Reservoir Dam | Montana | Meagher | 13 | Significant | - | 1932 | Irrigation |
| Cooper-Adams #6 | Montana | Fergus | 13 | Low | - | 1960 | Irrigation |
| Cooper-Adams #5 | Montana | Fergus | 13 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Bn #9 | Montana | Treasure | 13 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| L Pawlowski #1 | Montana | McCone | 13 | Low | - | 1950 | Irrigation |
| Deerhead Lake Dam | Montana | Beaverhead | 13 | Significant | - | 1929 | Irrigation |
| Leepin'Antelope | Montana | Chouteau | 13 | Low | - | 1941 | Fire Protection, Stock, Or ... |
| R Downs #5 | Montana | Big Horn | 13 | Low | - | 1950 | Irrigation |
| Vale Creek #1 | Montana | Big Horn | 13 | Low | - | 1966 | Fire Protection, Stock, Or ... |
| Jawbone Dike #1 | Montana | Wheatland | 13 | High | Satisfactory | 1966 | Flood Risk Reduction |
| Christensen L&C #2 | Montana | Big Horn | 13 | Low | - | 1958 | Other |
| J-5 Ranch #3 | Montana | Phillips | 13 | Low | - | 1978 | Fire Protection, Stock, Or ... |
| Wood Lake Dam | Montana | Lewis and Clark | 13 | Low | Not Rated | 1955 | Other |
| Twin Bridges Wastewater Lagoon Dam | Montana | Madison | 13 | High | Not Rated | - | Other |
| Tub Lake Dam | Montana | Beaverhead | 13 | Significant | - | 1904 | Irrigation |
| Ds Scott #1 | Montana | Big Horn | 13 | Low | - | 1935 | Fire Protection, Stock, Or ... |
| Agnes Lake | Montana | Beaverhead | 13 | High | Not Rated | 1928 | Irrigation |
| Big Rock Detention Dam | Montana | Valley | 13 | Low | Unsatisfactory | 1961 | Flood Risk Reduction |
| North Tucks Slough Dam | Montana | Beaverhead | 13 | Low | Poor | 1990 | Fish and Wildlife Pond |
| Weigand Reservoir | Montana | Blaine | 13 | High | Not Rated | - | |
| Ninepipe Dike 3 | Montana | Lake | 13 | Undetermined | Fair | 1911 | Irrigation |
| Haypense | Montana | Garfield | 12 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Drury | Montana | Daniels | 12 | Low | - | 1950 | Irrigation |
| Magnesia | Montana | Garfield | 12 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Floodly | Montana | Garfield | 12 | Low | - | 1940 | Flood Risk Reduction |
| Mars | Montana | Hill | 12 | Low | - | 1958 | Fire Protection, Stock, Or ... |
| Hastetter #1 | Montana | Richland | 12 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Nickles Worth | Montana | Chouteau | 12 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Ballard #1 | Montana | Rosebud | 12 | Low | - | 1941 | Fire Protection, Stock, Or ... |
| Sam | Montana | Blaine | 12 | Low | - | 1960 | 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.