Browse Dams

835 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 835 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.

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Name State County Height (ft) Hazard Condition Year Purpose
Sylvia Lake Dam Grays Harbor Cnty Washington Grays Harbor 23 Significant Poor 1918 Recreation
Finley Ranch Reservoir Washington Benton 23 High Satisfactory 2013 Irrigation
Roosevelt Reservoir Washington King 23 High Satisfactory 1910 Water Supply
Mill Creek Canyon Stormwater Detention D Washington King 22 High Satisfactory 1982 Flood Risk Reduction
Devils Hole Dam Washington Kitsap 22 Low Poor 1959 Recreation
Tahuyeh Lake Dam Washington Kitsap 22 High Satisfactory 1961 Recreation
Orchards Block 92 Dam Washington Walla Walla 22 Low — 1992 Irrigation
Wood Reservoir Dam No 2 Washington Chelan 22 High Satisfactory 1989 Irrigation
Everett Reservoir No 3 Washington Snohomish 22 High Satisfactory 1923 Water Supply
George Deruyter & Son Dairy Lagoon 3 Washington Yakima 22 High — 2022 Other
Issaquah Highlands Falls Pond Dam Washington King 22 High Satisfactory 2008 Flood Risk Reduction
Pumping Pond Dike Washington Whatcom 22 Low Satisfactory 1960 Hydroelectric
Pigeon Creek No 1 Stormwater Detention D Washington Snohomish 22 Significant Fair 1990 Flood Risk Reduction
Belfair Wwtp Treated Water Storage Pond Washington Mason 22 High Poor 2014 Other
Selah Home Ranch Reservoir Washington Yakima 22 High Satisfactory 2009 Irrigation
Garvey Dam Washington Stevens 22 Low — 1986 Irrigation
Eightmile Lake Outlet Dam Washington Chelan 22 High Poor 1933 Irrigation
Hog Lake Dam Washington Spokane 22 High Fair 1957 Recreation
Port of Sunnyside Anaerobic Pretreatment System Washington Yakima 22 High Satisfactory 2015 Other
Great Depression Dam Washington Chelan 22 High Fair 1998 Irrigation
Wood Reservoir Dam No 1 Washington Chelan 22 High Satisfactory 1991 Irrigation
Loutsis Dam Washington King 22 Low Satisfactory 1970 Irrigation
Tapps Lake Backflow Prevention Structure Washington Pierce 22 High Satisfactory 2007 Recreation
Homestead Lake Dam Washington Pend Oreille 22 Low — 1971 Recreation
Bacchus Dam Washington Franklin 22 Low — 1973 Irrigation
Conger Lake Dam Washington Pend Oreille 22 Low — 1926 Recreation
Chambers Creek Reservoir Dam Washington Pierce 22 Low — 1970 Water Supply
Davenport Sewage Lagoon No 4 Washington Lincoln 22 High Fair 1987 Other
South Fork Mccorkle Creek Detention Dam Washington Cowlitz 22 High Fair 1989 Flood Risk Reduction
Upper Sunlight Lake Dam Washington Kittitas 22 High Satisfactory 1967 Irrigation
Rio Mount Dam Washington Snohomish 22 Low — 1979 Recreation
Ob-3 Warden Digester Lagoon Washington Grant 21 High Satisfactory 2018 Other
Chiawana Gleed Ranch Dam Washington Yakima 21 High Fair 2003 Irrigation
Trossachs Detention Pond Pc-2 Washington King 21 High Satisfactory 2002 Flood Risk Reduction
Harbor Hill North Pond Washington Pierce 21 High Satisfactory 2014 Flood Risk Reduction
Watts Bros Organic Dairy Lagoon 2 Washington Benton 21 Significant Fair 2007 Other
Durhack Dam No 4 Washington San Juan 21 Low — 1968 Recreation
Watts Bros Organic Dairy Lagoon 3 Washington Benton 21 Significant Fair 2007 Other
Dawn Lake Dam Washington Clallam 21 High Satisfactory 1950 Recreation
Unruh Reservoir Dam Washington Whatcom 21 Low — 1959 Irrigation
Cascade Lake Dam Washington San Juan 21 High Poor 1915 Hydroelectric
Tukwila South Project South Pond Washington King 21 Low Satisfactory 2011 Flood Risk Reduction
Upper Mill Creek Stormwater Detention Da Washington King 21 High Satisfactory 1990 Flood Risk Reduction
Sunny Dene Dairy Waste Pond Washington Yakima 21 Significant Fair 2004 Other
Olympic Orchards Dam 2 Washington Yakima 21 High Fair 1985 Irrigation
Centralia Coal Mine Dam No 3c East Washington Lewis 21 Significant Satisfactory 1987 Tailings
Watts Bros Organic Dairy Lagoon 1 Washington Benton 21 Significant Fair 2007 Other
Olympic Orchards Dam 1 Washington Yakima 21 High Poor 1985 Irrigation
Centralia Coal Mine Dam No 5c Washington Lewis 20 Low — 1970 Tailings
North Aeration Stabilization Basin Lady Island Washington Clark 20 Significant Satisfactory 1977 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.