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 |
|---|---|---|---|---|---|---|---|
| Camp Detention Dam | Montana | Valley | 21 | Low | Unsatisfactory | 1954 | Flood Risk Reduction |
| Pr-110 Retention Dam | Montana | Phillips | 21 | Low | Not Rated | 1936 | Fire Protection, Stock, Or ... |
| Fatzinger #2 | Montana | Richland | 21 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Herzog #3 | Montana | Custer | 21 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Mgdevlon Dam | Montana | Prairie | 21 | Low | Not Rated | — | |
| F Whitmus #2 | Montana | McCone | 21 | Low | — | 1966 | Fire Protection, Stock, Or ... |
| Walkerville | Montana | McCone | 21 | Low | — | 1939 | Fire Protection, Stock, Or ... |
| Whitetail (Daniels) | Montana | Daniels | 21 | Low | — | 1930 | Irrigation |
| Mystic Dike | Montana | Stillwater | 21 | High | Satisfactory | 1927 | Hydroelectric |
| Allen #5 | Montana | Custer | 21 | Low | — | 1964 | Fire Protection, Stock, Or ... |
| Southerland Lacosta | Montana | Garfield | 21 | Low | — | 1957 | Fire Protection, Stock, Or ... |
| Lockie #6 | Montana | Custer | 21 | Low | — | 1975 | Fire Protection, Stock, Or ... |
| Jasper | Montana | Blaine | 21 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| Paradise Diversion Dam | Montana | Blaine | 21 | Low | Not Available | 1905 | Irrigation |
| Dammel Reservoir | Montana | Chouteau | 21 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Homestead Retention Dam | Montana | Prairie | 21 | Low | Unsatisfactory | 1964 | Fire Protection, Stock, Or ... |
| Lobella Detention Dam | Montana | Dawson | 21 | Low | Unsatisfactory | 1956 | Fire Protection, Stock, Or ... |
| Crow #3 | Montana | Big Horn | 21 | Low | Not Rated | 1950 | Fire Protection, Stock, Or ... |
| Longhorn #1/Horny Detention Dam | Montana | Valley | 21 | Low | Fair | 1966 | Flood Risk Reduction |
| Temple Dam | Montana | Wibaux | 21 | Low | — | 1938 | Fire Protection, Stock, Or ... |
| Maney | Montana | Jefferson | 21 | Low | Not Rated | 1979 | Irrigation |
| Pozega Lake 1 | Montana | Granite | 21 | Low | Not Available | 1958 | Irrigation |
| Lockie #10 | Montana | Custer | 21 | Low | — | 1955 | Fire Protection, Stock, Or ... |
| Knudson | Montana | Dawson | 21 | Low | — | 1958 | Fire Protection, Stock, Or ... |
| Russiff #2 | Montana | Powder River | 21 | Low | — | 1960 | Fire Protection, Stock, Or ... |
| Goffena #2 | Montana | Petroleum | 21 | Low | — | 1953 | Fire Protection, Stock, Or ... |
| Half Barrel Detention Dam | Montana | Valley | 21 | Low | Unsatisfactory | 1956 | Fire Protection, Stock, Or ... |
| Redeen #2 | Montana | Rosebud | 21 | Low | — | 1953 | Fire Protection, Stock, Or ... |
| Br-43 Retention Dam | Montana | Blaine | 21 | Low | Not Rated | 1936 | Flood Risk Reduction |
| Skeeter Detention Dam | Montana | Valley | 21 | Low | Unsatisfactory | 1964 | Flood Risk Reduction |
| W Krutzfeldt #1 | Montana | Custer | 21 | Low | — | 1960 | Irrigation |
| Big Elk | Montana | Wheatland | 21 | Significant | — | 1927 | Irrigation |
| Schaffer #1 | Montana | Powder River | 21 | Low | — | 1961 | Fire Protection, Stock, Or ... |
| Holzhey | Montana | Sweet Grass | 21 | Low | — | 1956 | Irrigation |
| Rieger | Montana | Fallon | 21 | Significant | — | 1958 | Irrigation |
| Dondarlee #1 | Montana | Prairie | 21 | Low | — | 1948 | Fire Protection, Stock, Or ... |
| Norman #4 (Fergus) | Montana | Fergus | 21 | Low | — | 1945 | Irrigation |
| Weigand Reservoir East | Montana | Phillips | 21 | High | Not Rated | — | |
| Halmans #2 | Montana | Fallon | 21 | Low | — | 1954 | Irrigation |
| Johnson Reservoir | Montana | Dawson | 21 | Low | — | 1937 | Recreation |
| Kendrick#1 | Montana | Powder River | 21 | Low | — | 1949 | Irrigation |
| Billings #2 | Montana | Garfield | 21 | Low | — | 1967 | Fire Protection, Stock, Or ... |
| Nefsy #2 (Custer) | Montana | Custer | 21 | Low | — | 1966 | Fire Protection, Stock, Or ... |
| Carter Pond, Upper (Fergus) | Montana | Fergus | 21 | Significant | — | 1951 | Fire Protection, Stock, Or ... |
| Carter Pond, Lower (Fergus) | Montana | Fergus | 21 | Significant | — | 1938 | Fire Protection, Stock, Or ... |
| Gibbs, Gerold | Montana | Garfield | 21 | Low | — | 1969 | Fire Protection, Stock, Or ... |
| 761 Lang | Montana | Fallon | 21 | Low | — | 1965 | Fire Protection, Stock, Or ... |
| Baba Blacksheep | Montana | Chouteau | 21 | Low | — | 1903 | Fire Protection, Stock, Or ... |
| Bixler #2 | Montana | Custer | 21 | Low | — | 1949 | Fire Protection, Stock, Or ... |
| Mowbray #3 | Montana | Carter | 20 | Low | — | 1950 | 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.