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 |
|---|---|---|---|---|---|---|---|
| Sand #1 | Montana | Rosebud | 15 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Harmon Reservoir | Montana | Roosevelt | 15 | Low | — | 1925 | Fire Protection, Stock, Or ... |
| Aries | Montana | Judith Basin | 15 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Zelzo | Montana | Carter | 15 | Low | — | 1920 | Irrigation |
| Nyquist #1 | Montana | Valley | 15 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Mathilda #1 | Montana | McCone | 15 | Significant | — | 1950 | Fire Protection, Stock, Or ... |
| California #1 | Montana | Garfield | 15 | Low | — | 1974 | Fire Protection, Stock, Or ... |
| Mitchell One | Montana | Phillips | 15 | Low | — | 1960 | Irrigation |
| H A Wyrick #1 | Montana | Fallon | 15 | Low | — | 1954 | Irrigation |
| Twin Lakes | Montana | Teton | 15 | Low | — | 1952 | Fire Protection, Stock, Or ... |
| Frady #3 | Montana | McCone | 15 | Low | — | 1967 | Fire Protection, Stock, Or ... |
| O'Henry | Montana | Fallon | 15 | Low | — | 1930 | Fire Protection, Stock, Or ... |
| Calvin | Montana | Sheridan | 15 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Laas | Montana | Liberty | 15 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Stephens | Montana | Blaine | 15 | Low | — | 1966 | Irrigation |
| Veseth and Veseth #1 | Montana | Phillips | 15 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Tiger #2 | Montana | Blaine | 15 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Benes Bank | Montana | Fergus | 15 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Black Out | Montana | Sheridan | 15 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Tonn #2 | Montana | Custer | 15 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Krezelok | Montana | Lewis and Clark | 15 | Low | — | 1945 | Irrigation |
| Gjp Suta | Montana | Toole | 15 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Haylodge #2 | Montana | Hill | 15 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Z Cake | Montana | Rosebud | 15 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Burch | Montana | Carter | 15 | Low | — | 1963 | Fire Protection, Stock, Or ... |
| Kolstad #3 | Montana | Toole | 15 | Low | — | 1964 | Irrigation |
| Saucer #1 | Montana | Prairie | 15 | Low | — | 1948 | Irrigation |
| Mildred #1 | Montana | Fallon | 15 | Low | — | 1948 | Fire Protection, Stock, Or ... |
| Sunday Milk | Montana | Phillips | 15 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| Humperdinck #1 | Montana | Beaverhead | 15 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| Cosmic Nick | Montana | Madison | 15 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Russell #1 | Montana | Powder River | 15 | Low | — | 1941 | Fire Protection, Stock, Or ... |
| Fergus #1 | Montana | Fergus | 15 | Low | — | 1939 | Fire Protection, Stock, Or ... |
| Alay #1 | Montana | Garfield | 15 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Bandy Reservoir | Montana | Powell | 15 | Low | — | 1937 | Irrigation |
| Hingham Sandy Sage | Montana | Hill | 15 | Low | — | 1920 | Irrigation |
| French #17 | Montana | Rosebud | 15 | Low | — | 1953 | Fire Protection, Stock, Or ... |
| Incorporeal | Montana | Chouteau | 15 | Low | — | 1935 | Fire Protection, Stock, Or ... |
| Real Close | Montana | Gallatin | 15 | Low | — | 1963 | Irrigation |
| Edwards Reservoir | Montana | Garfield | 15 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Jack of Diamonds | Montana | Carter | 15 | Low | — | 1959 | Fire Protection, Stock, Or ... |
| Detergent | Montana | Lewis and Clark | 15 | Low | — | 1956 | Fire Protection, Stock, Or ... |
| Hooker | Montana | Garfield | 15 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| Eide Trail | Montana | Toole | 15 | Low | — | 1952 | Fire Protection, Stock, Or ... |
| Alay #2 | Montana | Garfield | 15 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Humperdinck #2 | Montana | Beaverhead | 15 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| German Reservoir | Montana | Toole | 15 | Low | — | 1900 | Fire Protection, Stock, Or ... |
| Haines Reservoir | Montana | Treasure | 15 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| J Galt #8 | Montana | Rosebud | 15 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Wolery Waters | Montana | Hill | 15 | Significant | — | 1945 | 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.