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 |
|---|---|---|---|---|---|---|---|
| Ghost #1 | Montana | Valley | 20 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Little Wall | Montana | Musselshell | 20 | Low | — | 1930 | Fire Protection, Stock, Or ... |
| Burgess #2 | Montana | Garfield | 20 | Low | — | 1969 | Irrigation |
| Miller Brothers Livestock Reservoir | Montana | Judith Basin | 20 | Low | — | 1975 | Fire Protection, Stock, Or ... |
| Demontigny | Montana | Phillips | 20 | Low | — | 1954 | Irrigation |
| Edward Lanning #1 | Montana | Carter | 20 | Low | — | 1970 | Fire Protection, Stock, Or ... |
| Vic Jay #1 | Montana | Garfield | 20 | Low | — | 1936 | Fire Protection, Stock, Or ... |
| Black Lake (Lincoln) | Montana | Lincoln | 20 | Low | — | 1935 | Other |
| Warmbrod | Montana | Roosevelt | 20 | Low | — | 1945 | Fire Protection, Stock, Or ... |
| Ja Montgomery #1 | Montana | Rosebud | 20 | Low | — | 1946 | Fire Protection, Stock, Or ... |
| Pawlowski #1 | Montana | McCone | 20 | Significant | — | 1944 | Fire Protection, Stock, Or ... |
| Brady Lakes (Eyraud Lakes) | Montana | Toole | 20 | Low | — | 1936 | Irrigation |
| Christensen #1 (Meagher) | Montana | Meagher | 20 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| German #3 | Montana | Carter | 20 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Garden | Montana | Blaine | 20 | Low | — | 1930 | Irrigation |
| Wales Creek Reservoir | Montana | Powell | 20 | Low | — | 1953 | Irrigation |
| Pepper | Montana | Park | 20 | Low | — | 1954 | Irrigation |
| Kjeldgaard #2 | Montana | Big Horn | 20 | Low | — | 1963 | Fire Protection, Stock, Or ... |
| Fifty Dollar Bill | Montana | Meagher | 20 | Significant | — | 1960 | Fire Protection, Stock, Or ... |
| Big Bucks #14 | Montana | Garfield | 20 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Big Jugs | Montana | Hill | 20 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| B&A Hammond #1 | Montana | Big Horn | 20 | Low | — | 1967 | Irrigation |
| Lower Twin Lakes | Montana | Ravalli | 20 | Low | Not Available | 1916 | Irrigation |
| Ryan (Garfield) | Montana | Garfield | 20 | Low | — | 1968 | Fire Protection, Stock, Or ... |
| Sandman #1 | Montana | Petroleum | 20 | Low | — | 1960 | Irrigation |
| Buffalo Hill | Montana | Garfield | 20 | Significant | — | 1936 | Irrigation |
| Over The Hill Reservoir | Montana | Blaine | 20 | Low | — | 1962 | Irrigation |
| Big Bucks #15 | Montana | Garfield | 20 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Glasscock Reservoir #2 | Montana | Garfield | 20 | Low | — | 1937 | Fire Protection, Stock, Or ... |
| Tree Bark #1 | Montana | Phillips | 20 | Low | — | 1947 | Fire Protection, Stock, Or ... |
| Pettersen #1 | Montana | Dawson | 20 | Low | — | 1950 | Fire Protection, Stock, Or ... |
| Wills, R. | Montana | Missoula | 20 | Low | — | 1966 | Irrigation |
| Cement Dam | Montana | Fergus | 20 | Low | — | 1936 | Irrigation |
| Dean S #1 | Montana | McCone | 20 | Low | — | 1943 | Fire Protection, Stock, Or ... |
| Dana-Cameron Ranch | Montana | Cascade | 20 | Low | — | 1940 | Fire Protection, Stock, Or ... |
| Pryor Land #1 | Montana | Big Horn | 20 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Dunning #2 | Montana | Rosebud | 20 | Low | — | 1961 | Fire Protection, Stock, Or ... |
| Johnson #1 | Montana | Rosebud | 20 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Archie #1 | Montana | Garfield | 20 | Low | — | 1959 | Fire Protection, Stock, Or ... |
| Big Timber #41 | Montana | Rosebud | 20 | Low | — | 1946 | Fire Protection, Stock, Or ... |
| Green Coulee Dam | Montana | Garfield | 20 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Cap Rock #1 | Montana | Custer | 20 | Low | — | 1966 | Fire Protection, Stock, Or ... |
| Isaac Frye #1 | Montana | Phillips | 20 | Low | — | 1946 | Fire Protection, Stock, Or ... |
| Withee #2 | Montana | Garfield | 20 | Low | — | 1967 | Fire Protection, Stock, Or ... |
| Duck/Sugrast Dam | Montana | Prairie | 20 | Low | Not Rated | — | |
| C Sowle Reservoir #2 | Montana | Richland | 20 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Bowman Lake 2 | Montana | Powell | 20 | Low | Not Available | 1961 | Irrigation |
| Johnston and Son Ranch #4 | Montana | Carter | 20 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| Smith Ranch 4 | Montana | Garfield | 20 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| Manuel #2 | Montana | Petroleum | 20 | Low | — | 1969 | 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.