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 |
|---|---|---|---|---|---|---|---|
| Stark Dam | Montana | Fallon | 20 | Low | - | 1945 | Fire Protection, Stock, Or ... |
| Dovetail #1 | Montana | Petroleum | 20 | Low | - | 1961 | Fire Protection, Stock, Or ... |
| Bumgardner | Montana | Custer | 20 | Low | - | 1972 | Fire Protection, Stock, Or ... |
| Gildford Colony #1000 | Montana | Hill | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Shady Lane | Montana | McCone | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Dolomites | Montana | Judith Basin | 20 | Low | - | 1958 | Fire Protection, Stock, Or ... |
| Murray #1 | Montana | Custer | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Daniel #1 | Montana | Hill | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Fifty Dollar Bill | Montana | Meagher | 20 | Significant | - | 1960 | Fire Protection, Stock, Or ... |
| Alkali (Toole) | Montana | Toole | 20 | Low | - | 1907 | Irrigation |
| U N Reservoir | Montana | Hill | 20 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Douglas Creek Dam | Montana | Granite | 20 | Low | - | 1968 | Other |
| Meccage #3 | Montana | Fallon | 20 | Low | - | 1955 | Fire Protection, Stock, Or ... |
| Steinreisser #10 | Montana | Richland | 20 | Significant | - | 1955 | Fire Protection, Stock, Or ... |
| #6 | Montana | Blaine | 20 | Low | - | 1938 | Irrigation |
| Gmg | Montana | Cascade | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Reeves | Montana | Fergus | 20 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Banka Dama | Montana | Pondera | 20 | Low | - | 1930 | Fire Protection, Stock, Or ... |
| Wilson #1 (Toole) | Montana | Toole | 20 | Low | - | 1935 | Water Supply |
| Waro Reservoir | Montana | Roosevelt | 20 | Low | - | 1946 | Fire Protection, Stock, Or ... |
| Halmans #3 | Montana | Fallon | 20 | Low | - | 1954 | Irrigation |
| Wallenstein | Montana | Carter | 20 | Low | - | 1945 | Irrigation |
| Waterman | Montana | Chouteau | 20 | Low | - | 1945 | Fire Protection, Stock, Or ... |
| Looney Tuney | Montana | Toole | 20 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Herzog #2 | Montana | Custer | 20 | Low | - | 1973 | Irrigation |
| Plunket Lake | Montana | Broadwater | 20 | Low | - | 1920 | Irrigation |
| Dolcefarniente | Montana | Judith Basin | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| O Lane #1 | Montana | Fergus | 20 | Low | - | 1975 | Fire Protection, Stock, Or ... |
| Best Rocky Twist | Montana | Blaine | 20 | Low | - | 1965 | Fire Protection, Stock, Or ... |
| Koss #3 | Montana | Phillips | 20 | Low | - | 1945 | Irrigation |
| John Lane | Montana | Teton | 20 | Low | - | 1952 | Irrigation |
| Pawlowski Reservoir | Montana | McCone | 20 | Low | - | 1950 | Irrigation |
| Peila #1 | Montana | Custer | 20 | Low | - | 1945 | Fire Protection, Stock, Or ... |
| Tolksdorf #1 | Montana | Richland | 20 | Low | - | 1953 | Recreation |
| Caldwell | Montana | Garfield | 20 | Low | - | 1960 | Fire Protection, Stock, Or ... |
| Phillippi #1 | Montana | Carter | 20 | Significant | - | 1952 | Irrigation |
| Cherry Creek #4 | Montana | Rosebud | 20 | Low | - | 1945 | Irrigation |
| Wilde | Montana | Roosevelt | 20 | Low | - | 1942 | Irrigation |
| Ten | Montana | Garfield | 20 | Low | - | 1940 | Fire Protection, Stock, Or ... |
| Green #4 | Montana | Powder River | 20 | Low | - | 1970 | Irrigation |
| Leo #2 | Montana | Fallon | 20 | Low | - | 1954 | Fire Protection, Stock, Or ... |
| Ponderosa Pine | Montana | Pondera | 20 | Low | - | 1968 | Fire Protection, Stock, Or ... |
| Ostrich Egg | Montana | Hill | 20 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| D Hannaland #1 | Montana | McCone | 20 | Low | - | 1959 | Fire Protection, Stock, Or ... |
| Professor Pool | Montana | Valley | 20 | Low | - | 1950 | Fire Protection, Stock, Or ... |
| Ronning #1 | Montana | Custer | 20 | Low | - | 1958 | Fire Protection, Stock, Or ... |
| Buffalo Hill | Montana | Garfield | 20 | Significant | - | 1936 | Irrigation |
| Deerborn Reservoir | Montana | Lewis and Clark | 20 | Low | - | 1900 | Irrigation |
| Brain | Montana | Dawson | 20 | Low | - | 1948 | Fire Protection, Stock, Or ... |
| Hauso Reservoir | Montana | Garfield | 20 | Low | - | 1958 | 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.