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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
Crane Gulch Main Fork Idaho Ada 46 Significant Satisfactory 1998 Flood Risk Reduction
Sage Hen Idaho Gem 46 Significant Fair 1939 Other
Shoofly Idaho Owyhee 46 Low Fair 1977 Irrigation
Samaria No 2 Upper Idaho Oneida 46 Significant Fair 1947 Other
Blackhawk Lake Idaho Valley 45 Significant Fair 1968 Irrigation
Conda Site Mtis (Simplot) Idaho Caribou 45 Significant Satisfactory 1979 Tailings
Five Mile Erosion Contr Idaho Franklin 44 Low Satisfactory 1952 Other
Hughes Idaho Valley 43 Significant Fair 1957 Irrigation
Saint John Idaho Oneida 43 High Unsatisfactory 1918 Irrigation
Corral Creek Idaho Valley 43 Significant Fair 1952 Irrigation
Hidden Springs Cell 3a Idaho Ada 43 Significant Satisfactory 2007 Other
Orchard Idaho Ada 43 Significant Poor 1902 Other
Tyson West Idaho Owyhee 42 Low Fair 1967 Irrigation
Deep Creek No 2 Idaho Twin Falls 42 Significant Fair 1911 Other
Murtaugh Lake Idaho Twin Falls 42 High Fair 1905 Irrigation
Delamar Wmp-1 Idaho Owyhee 42 Low Satisfactory 2009 Tailings
Weston Idaho Oneida 42 High Fair 1929 Other
Deyo Idaho Clearwater 41 Significant Satisfactory 2011 Other
Sunset Palisades Idaho Nez Perce 41 Significant Fair 1973 Irrigation
Condie Idaho Franklin 41 Significant Satisfactory 1948 Other
Louisa Creek Idaho Owyhee 41 Low Poor 1931 Other
Curlew Valley Idaho Oneida 41 Significant Poor 1911 Other
Hot Springs No 2 Idaho Elmore 41 High Fair 1968 Irrigation
Jenkins Creek Idaho Washington 41 Low Fair 1915 Other
Winchester Idaho Lewis 40 High Fair 1910 Other
Gem State Idaho Bonneville 40 High Satisfactory 1988 Hydroelectric
Strong Arm No 1 (Upper) Idaho Franklin 39 High Fair 1887 Other
Portneuf Wellness Complex Idaho — 39 Significant Satisfactory 2014 Recreation
Simplot Effluent Irrigation Lagoon Idaho Bannock 39 High Fair 1981 Irrigation
Herrick Idaho Valley 38 Significant Fair 1953 Other
Stewart Gulch North Fork Idaho Ada 38 Significant Satisfactory 1997 Flood Risk Reduction
Oxbow Fuse Plug Idaho Adams 37 High Fair 1961 Hydroelectric
Rock Creek Idaho Owyhee 37 Significant Fair 1965 Irrigation
Idaho Falls Upper Powerhouse Dam No 2 Idaho Bonneville 37 Low Satisfactory 1982 Hydroelectric
Little Blue Creek Idaho Owyhee 37 Significant Poor 1914 Other
Little (Upper Bissel Creek Dam) Idaho Gem 37 Significant Fair 1963 Other
Monroe Idaho Washington 36 Low Fair 1916 Irrigation
Bray Lake Idaho Gooding 36 Significant Fair 1915 Irrigation
Twin Lakes South Idaho Franklin 36 High Satisfactory 1920 Irrigation
Soda Creek Main Dam Idaho Caribou 36 High Fair 1967 Other
Deep Creek Upper Idaho Oneida 36 Significant Fair 1906 Irrigation
Hawkins Idaho Bannock 35 Significant Fair 1870 Irrigation
Smalley Idaho Valley 35 Low Fair 1952 Irrigation
Samaria No 1 Lower Idaho Oneida 35 Significant Fair 1934 Other
Dry Creek Diversion Idaho Payette 35 Low Fair 1976 Irrigation
Boulder Meadow Idaho Valley 35 Significant Poor 1968 Irrigation
Elkington Idaho Bonneville 35 Low Fair 1994 Irrigation
Blackfoot Bridge Wmp #1 & #2 Idaho Caribou 35 Significant Satisfactory 2012 Other
Strickland Idaho Owyhee 35 Low Fair 1927 Other
Cow Creek Idaho Elmore 34 Low Fair 1915 Irrigation

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.