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 |
|---|---|---|---|---|---|---|---|
| Mitchell One | Montana | Phillips | 15 | Low | - | 1960 | Irrigation |
| Alay #1 | Montana | Garfield | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Alay #2 | Montana | Garfield | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Mathilda #1 | Montana | McCone | 15 | Significant | - | 1950 | Fire Protection, Stock, Or ... |
| Hasland #2 | Montana | Sheridan | 15 | Low | - | 1946 | Flood Risk Reduction |
| Black Out | Montana | Sheridan | 15 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Obermayer Lake | Montana | Lincoln | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Rock Springs | Montana | Rosebud | 15 | Low | - | 1949 | Fire Protection, Stock, Or ... |
| Kat Ruler | Montana | Hill | 15 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Hagerty | Montana | Glacier | 15 | Low | - | 1942 | Fire Protection, Stock, Or ... |
| Okaga Lake | Montana | Lincoln | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Cinnamon #1 | Montana | Wheatland | 15 | Low | - | 1972 | Irrigation |
| Mr Wipple | Montana | Hill | 15 | Low | - | 1974 | Fire Protection, Stock, Or ... |
| Schiffer #6 | Montana | Rosebud | 15 | Low | - | 1954 | Irrigation |
| Hunt #2 | Montana | Rosebud | 15 | Low | - | 1964 | Fire Protection, Stock, Or ... |
| Schmidt #1 | Montana | Rosebud | 15 | Low | - | 1932 | Fire Protection, Stock, Or ... |
| Cooper-Adams #4 | Montana | Fergus | 15 | Low | - | 1960 | Irrigation |
| Cinnamon #6 | Montana | Wheatland | 15 | Low | - | 1967 | Fire Protection, Stock, Or ... |
| Transistor #2 | Montana | Blaine | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Too Far Gone | Montana | Fergus | 15 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Watson #1 | Montana | Rosebud | 15 | Low | - | 1975 | Fire Protection, Stock, Or ... |
| Barnard (Valley) | Montana | Valley | 15 | Low | - | 1953 | Irrigation |
| Tigar Milk | Montana | Valley | 15 | Low | - | 1965 | Irrigation |
| Landers #1 | Montana | Park | 15 | Low | - | 1949 | Irrigation |
| Rigby, South | Montana | Pondera | 15 | Low | - | 1918 | Irrigation |
| Gearhart #4 | Montana | Rosebud | 15 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Murphy #1 | Montana | McCone | 15 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Vredenburg Dam | Montana | Lincoln | 15 | Low | - | 1970 | Recreation |
| Dioscuri | Montana | Chouteau | 15 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Spun | Montana | Cascade | 15 | Significant | - | 1960 | Water Supply |
| Couch Coulee #3 | Montana | Hill | 15 | Low | - | 1941 | Fire Protection, Stock, Or ... |
| Vine Reservoir | Montana | McCone | 15 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Lee #13 | Montana | Rosebud | 15 | Low | - | 1950 | Irrigation |
| Keirle | Montana | Fallon | 15 | Low | - | 1963 | Fire Protection, Stock, Or ... |
| Tex Oh Leo | Montana | Liberty | 15 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Transistor #1 | Montana | Blaine | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Hansen | Montana | Roosevelt | 15 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Kelso #1 | Montana | Phillips | 15 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Young Sun | Montana | Teton | 15 | Low | - | 1970 | Fire Protection, Stock, Or ... |
| Thompson Creek Dam(Proposed) | Montana | Carter | 15 | Low | - | - | Fire Protection, Stock, Or ... |
| Baby Food | Montana | Fergus | 15 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Happy Jack #1 | Montana | Garfield | 15 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Tarum | Montana | Valley | 15 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Wyotana Ranch #5 | Montana | Carter | 15 | Low | - | 1962 | Fire Protection, Stock, Or ... |
| Two Dollar Bill | Montana | Meagher | 15 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Shay Dam | Montana | Toole | 15 | Significant | - | 1915 | Irrigation |
| Schlesinger #4 | Montana | Rosebud | 15 | Low | - | 1962 | Fire Protection, Stock, Or ... |
| Anderson Lake | Montana | Lewis and Clark | 15 | Low | - | 1956 | Fire Protection, Stock, Or ... |
| Ratzburg,M | Montana | Toole | 15 | Low | - | 1924 | Fire Protection, Stock, Or ... |
| Jensen No 3 (Dawson) | Montana | Dawson | 15 | Low | - | 1949 | 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.