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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
Davis Idaho Valley 34 Significant Fair 1942 Irrigation
Rhead Ranch Idaho Elmore 34 Low Satisfactory 1974 Irrigation
Big Blue Creek Idaho Owyhee 34 Significant Fair 1910 Other
Dry Creek Dike Idaho Payette 34 Significant Fair 1976 Irrigation
King Reservoir South Dam Idaho Owyhee 33 Significant Fair 1969 Irrigation
Hall Idaho Elmore 33 Significant Poor 1945 Other
Upper Diversion Dam #2 Idaho Bonneville 33 Low Satisfactory 1982 Hydroelectric
Star No 6 Idaho Shoshone 33 High Fair 1979 Tailings
Andreasen Lower Idaho Franklin 33 Significant Satisfactory 1960 Irrigation
Bradshaw Detention Dam #3 Idaho Custer 33 Low Not Rated — Flood Risk Reduction
Hammond Idaho Bear Lake 33 Significant Fair 1933 Irrigation
Payne Creek Idaho Owyhee 33 Low Fair 1930 Other
Little Crane Creek Idaho Washington 33 Low Satisfactory 1908 Irrigation
Francis Idaho Elmore 33 Significant Fair 1914 Irrigation
Twin Lakes North Idaho Franklin 32 High Fair 1920 Irrigation
Upper Salmon Falls Dam Idaho Gooding 32 Low Fair 1937 Hydroelectric
Surmeier Idaho Payette 32 Significant Fair 1978 Other
Teapot Lower Idaho Elmore 32 Significant Fair 1977 Other
Jug Creek Upper Idaho Valley 32 Significant Fair 1946 Irrigation
South Fork Detention Dam Idaho Custer 31 Low Not Rated — Flood Risk Reduction
Post Falls North Channel Idaho Kootenai 31 High Fair 1906 Hydroelectric
Hardisty Idaho Owyhee 31 Significant Fair 1914 Other
Lost Valley Idaho Adams 31 High Poor 1910 Other
Wilson Lake Idaho Jerome 31 Significant Fair 1909 Irrigation
Gem State Right Dike Idaho Bonneville 30 High Satisfactory 1988 Hydroelectric
Trail Idaho Elmore 30 Significant Fair 1960 Irrigation
Beal No 3 Idaho Valley 30 Significant Fair 1974 Irrigation
City Diversion Idaho Bonneville 30 Low Satisfactory 1982 Hydroelectric
Little Canyon Idaho Elmore 30 Significant Fair 1919 Other
Dewey Idaho Cassia 30 Significant Satisfactory 1913 Irrigation
Twin Falls Intake Dam Idaho Twin Falls 30 Low Satisfactory 1935 Hydroelectric
Point of Rock Idaho Cassia 30 Significant Satisfactory 2004 Other
Haul Road Pond (Monsanto) Idaho Caribou 30 Low Satisfactory 2009 Other
King Reservoir (West Dam) Idaho Owyhee 30 Significant Fair 1969 Irrigation
Gem State Left Dike Idaho Bonneville 30 High Satisfactory 1988 Hydroelectric
Shiner Upper Idaho Lemhi 29 Significant Fair 1968 Irrigation
Yanke Idaho Valley 29 Low Fair 1988 Fish and Wildlife Pond
Sommerville Idaho Owyhee 29 Low Fair 1926 Other
Welling No 2 Idaho Bear Lake 29 Low Satisfactory 1962 Irrigation
China Hat Dike Idaho Caribou 29 High Satisfactory 1923 Irrigation
Hancock Idaho Adams 29 Significant Fair 1931 Fish and Wildlife Pond
Andreasen Upper Idaho Franklin 29 Significant Unsatisfactory 1957 Irrigation
Horseshoe Idaho Custer 29 Low Not Rated 1967 Flood Risk Reduction
Diamond A Idaho Owyhee 29 Low Fair 1931 Other
Hollenbeak Idaho Valley 29 Low Fair 1972 Other
Paul Idaho Clark 28 Low Poor 1911 Other
Johnson Idaho Franklin 28 Significant Fair 1860 Irrigation
Hot Springs No 3 Idaho Elmore 28 Significant Fair 1984 Irrigation
Teapot Upper Idaho Elmore 28 Significant Poor 1977 Other
Stoneridge Idaho Bonner 28 Significant Fair 1969 Recreation

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.