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 |
|---|---|---|---|---|---|---|---|
| Road Reservoir | Montana | Valley | 10 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Jack of Spades | Montana | Carter | 10 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Skari and Sons #1 | Montana | Liberty | 10 | Low | - | 1958 | Fire Protection, Stock, Or ... |
| Ashley | Montana | Flathead | 10 | Low | - | 1928 | Irrigation |
| Blanchard Pond | Montana | Beaverhead | 10 | Low | - | 1960 | Irrigation |
| Noel #2 | Montana | Phillips | 10 | Low | - | 1925 | Fire Protection, Stock, Or ... |
| Jack of Hearts | Montana | Carter | 10 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Willie Nelson | Montana | Hill | 10 | Low | - | 1954 | Fire Protection, Stock, Or ... |
| Bayer #1 | Montana | Granite | 10 | Low | - | 1900 | Irrigation |
| Voss #1 | Montana | McCone | 10 | Low | - | 1935 | Irrigation |
| Penzer Dam | Montana | Chouteau | 10 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Hougan #6 | Montana | Musselshell | 10 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Circut Breaker | Montana | Chouteau | 10 | Low | - | 1920 | Fire Protection, Stock, Or ... |
| Walker #1 | Montana | Musselshell | 10 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Tedson Reservoir | Montana | Pondera | 10 | Low | - | 1958 | Fire Protection, Stock, Or ... |
| Bertoline #1 | Montana | Carbon | 10 | Low | - | 1953 | Fire Protection, Stock, Or ... |
| Manley #1 | Montana | Powell | 10 | Low | - | 1964 | Irrigation |
| Capudj | Montana | Hill | 10 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| B Henderson | Montana | Richland | 10 | Low | - | 1945 | Fire Protection, Stock, Or ... |
| Early Bird | Montana | Phillips | 10 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Shotgun Creek Dike #2 | Montana | Roosevelt | 10 | Significant | - | 1930 | |
| W B Black | Montana | Phillips | 10 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Pet Rock | Montana | Phillips | 10 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Rocky #2 | Montana | Phillips | 10 | Low | - | 1971 | Fire Protection, Stock, Or ... |
| Apocolipse | Montana | Pondera | 10 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Harlowton Sewage Lagoon | Montana | Wheatland | 10 | Low | - | 1958 | Other |
| Peru | Montana | Beaverhead | 10 | Low | - | 1943 | Fire Protection, Stock, Or ... |
| Swartz Lake Dam | Montana | Lake | 10 | Low | - | 1960 | Irrigation |
| Hansen (Blaine) | Montana | Blaine | 10 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Huffman #1 | Montana | Dawson | 10 | Low | - | 1954 | Fire Protection, Stock, Or ... |
| Townhouse | Montana | Dawson | 10 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Spider One | Montana | Blaine | 10 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Berland Skorupa Berland | Montana | Pondera | 10 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Insanity | Montana | Blaine | 10 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Lyle | Montana | Richland | 10 | Low | - | 1954 | Fire Protection, Stock, Or ... |
| Mccuin | Montana | Valley | 10 | Low | - | 1930 | Irrigation |
| Lipton | Montana | Toole | 10 | Low | - | 1977 | Other |
| M Gaskill #1 | Montana | Powder River | 10 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Allan | Montana | Richland | 10 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Palm Ranch #2 | Montana | Fallon | 10 | Low | - | 1961 | Irrigation |
| Fink #2 | Montana | Fergus | 10 | Low | - | 1957 | Fire Protection, Stock, Or ... |
| Deiphobus | Montana | Cascade | 10 | Low | - | 1953 | Fire Protection, Stock, Or ... |
| Olson #2 (Phillips) | Montana | Phillips | 10 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Nnn Ranch #2 | Montana | Rosebud | 10 | Low | - | 1959 | Irrigation |
| Bahls | Montana | Richland | 10 | Low | - | 1953 | Fire Protection, Stock, Or ... |
| Screwed Up | Montana | Meagher | 10 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Powell #1 (Blaine) | Montana | Blaine | 10 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| A Nichols | Montana | Valley | 10 | Low | - | 1967 | Fire Protection, Stock, Or ... |
| Cross | Montana | Sanders | 10 | Low | - | 1963 | Flood Risk Reduction |
| Shelby Sewage Lagoon | Montana | Toole | 10 | Low | - | 1960 | Other |
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.