Browse Dams
406 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 406 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 |
|---|---|---|---|---|---|---|---|
| Deer Flat Upper Dam | Idaho | Canyon | 74 | High | Not Available | 1908 | Irrigation |
| Glendale | Idaho | Franklin | 73 | High | Fair | 1930 | Other |
| Upper Salmon Falls B-Plant Forebay | Idaho | Twin Falls | 73 | Low | Satisfactory | 1947 | Hydroelectric |
| Itafos Tailings Pond #4 | Idaho | Caribou | 71 | Significant | Satisfactory | 1985 | Tailings |
| Jemima K | Idaho | Valley | 71 | Significant | Fair | 1974 | Irrigation |
| Osburn | Idaho | Shoshone | 71 | High | Fair | — | Tailings |
| Foster | Idaho | Franklin | 70 | High | Fair | 1962 | Irrigation |
| Soldiers Meadow Dam | Idaho | Nez Perce | 69 | High | Not Available | 1922 | Irrigation |
| Lamont | Idaho | Franklin | 68 | High | Fair | 1948 | Irrigation |
| Dry Creek Main | Idaho | Payette | 68 | High | Fair | 1976 | Irrigation |
| Boise River Diversion Dam | Idaho | Ada | 68 | High | Not Available | 1908 | Irrigation |
| Milner S Embankment | Idaho | Twin Falls | 65 | High | Satisfactory | 1992 | Irrigation |
| Ashton | Idaho | Fremont | 65 | High | Satisfactory | 1917 | Irrigation |
| Post Falls Middle Channel | Idaho | Kootenai | 64 | High | Satisfactory | 1906 | Hydroelectric |
| Galena Mill No 3 Lower | Idaho | Shoshone | 64 | Significant | Fair | 1979 | Tailings |
| Crane Creek Main Dam | Idaho | Washington | 64 | High | Fair | 1912 | Other |
| Brundage | Idaho | Adams | 63 | High | Fair | 1936 | Other |
| Reservoir A Dam | Idaho | Nez Perce | 61 | High | Not Available | 1907 | Irrigation |
| C Ben Ross | Idaho | Adams | 61 | High | Fair | 1937 | Other |
| Squaw Creek | Idaho | Owyhee | 61 | High | Fair | 1968 | Irrigation |
| Long Tom | Idaho | Elmore | 60 | Significant | Fair | 1906 | Irrigation |
| Bybee | Idaho | Owyhee | 60 | Low | Fair | 1987 | Irrigation |
| J-Ditch Effluent Lagoon | Idaho | Valley | 60 | High | Fair | 2001 | Other |
| Oneida Embankment | Idaho | Franklin | 60 | High | Fair | 1921 | Irrigation |
| Crane Gulch East Dam | Idaho | Ada | 60 | Significant | Satisfactory | 1998 | Flood Risk Reduction |
| Mosquito Flat | Idaho | Custer | 58 | Significant | Fair | 1950 | Other |
| Macks Creek | Idaho | Owyhee | 58 | Significant | Fair | 1993 | Other |
| Tom J | Idaho | Valley | 57 | Significant | Fair | 1995 | Irrigation |
| Winder | Idaho | Franklin | 57 | Significant | Fair | 1958 | Irrigation |
| Little Camas | Idaho | Elmore | 55 | Significant | Fair | 1912 | Irrigation |
| Portneuf | Idaho | Caribou | 55 | High | Fair | 1912 | Other |
| Hulet No 2 Dam | Idaho | Owyhee | 55 | Significant | Fair | 1987 | Irrigation |
| Blackfoot | Idaho | Caribou | 54 | High | Fair | 1911 | Irrigation |
| Sunshine No 2 | Idaho | Shoshone | 54 | Significant | Fair | — | Tailings |
| Horsethief | Idaho | Valley | 53 | Significant | Fair | 1967 | Other |
| Williams | Idaho | Twin Falls | 53 | Significant | Fair | 1952 | Irrigation |
| Blacks Creek | Idaho | Ada | 52 | High | Fair | 1915 | Other |
| Barton | Idaho | Washington | 52 | Significant | Fair | 1915 | Other |
| Beartrack H2o Overflow Pond | Idaho | Lemhi | 52 | Low | Satisfactory | 1995 | Tailings |
| Grace Main | Idaho | Caribou | 52 | High | Fair | 1908 | Irrigation |
| Magic Spillway | Idaho | Blaine | 50 | High | Fair | 1910 | Hydroelectric |
| Current Creek | Idaho | Bannock | 49 | Significant | Satisfactory | 1977 | Other |
| Deer Flat Lower Dam | Idaho | Canyon | 49 | High | Not Available | 1908 | Irrigation |
| Paddock Valley | Idaho | Washington | 49 | High | Fair | 1949 | Irrigation |
| Bradshaw Detention Dam #4 | Idaho | Custer | 49 | Low | Not Rated | 1967 | Flood Risk Reduction |
| Sublett | Idaho | Cassia | 48 | High | Fair | 1914 | Irrigation |
| Galena No 2 Mtis | Idaho | Shoshone | 48 | Significant | Fair | — | Tailings |
| Mountain Home | Idaho | Elmore | 48 | High | Fair | 1884 | Other |
| Deer Creek | Idaho | Clearwater | 48 | Significant | Fair | 2003 | Recreation |
| Spring Valley | Idaho | Latah | 47 | High | Fair | 1962 | Other |
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.