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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
Jones Dam Washington Clark 20 Low — 1977 Irrigation
Roza Wasteway 6 Reregulation Reservoir Washington Benton 20 Low — 1988 Irrigation
St Clair Stormwater Detention Dam Washington Whatcom 20 High Satisfactory 1986 Flood Risk Reduction
Youngs Lake New Inlet Dam Washington King 20 High Satisfactory 1926 Water Supply
Mill Creek Dam Cosmopolis Washington Grays Harbor 20 High Satisfactory 2019 Fish and Wildlife Pond
Everett Washwater Storage Pond Dam Washington Snohomish 20 Low — 1985 Other
Selah Naches Ranch Reservoir Washington Yakima 20 High Satisfactory 2004 Irrigation
Honeymoon Lake Dam Washington Island 20 High Satisfactory 1969 Recreation
Buck Mountain Reservoir Dam No 3 Washington San Juan 20 High Fair 1985 Water Supply
Tapps Lake Dike No 8 Washington Pierce 20 High Satisfactory 1911 Recreation
Centralia Coal Mine Dam No 5c Washington Lewis 20 Low — 1970 Tailings
Upper Falls Intake Dam Washington Spokane 20 Low Satisfactory 1922 Hydroelectric
Lummi Island Estates Dam Washington Whatcom 20 High Fair 1963 Recreation
North Aeration Stabilization Basin Lady Island Washington Clark 20 Significant Satisfactory 1977 Other
Connell Wastewater Lagoons Washington Franklin 20 Significant Fair 2000 Other
Woods Reservoir Dam Washington San Juan 20 Low — 1972 Irrigation
H & H Reservoir Dam No 1 Washington Chelan 19 High Satisfactory 1926 Irrigation
South 336th Street Stormwater Dam No 2 Washington King 19 High Fair 1996 Flood Risk Reduction
Walla Walla Effluent Storage Lagoon Washington Walla Walla 19 Low Satisfactory 2008 Other
Agreserves Plymouth Wastewater Storage Pond Washington Benton 19 Significant — 2023 Other
Carlisle Lake Dam Washington Lewis 19 High Poor 1920 Fish and Wildlife Pond
Firnstahl Dam Washington Snohomish 19 Low Poor 1965 Irrigation
Goldendale Wastewater Pond 1b Washington Klickitat 19 Low — 1983 Other
Goldendale Wastewater Pond 2 Washington Klickitat 19 Low — 1983 Other
Stemilt Equalizing Reservoir Washington Chelan 19 High Satisfactory 1985 Irrigation
Loreene Lake Dam Washington King 19 Low — 1963 Recreation
Moses Lake North Dam Washington Grant 19 Low — 1930 Irrigation
Davenport Sewage Lagoon No 3 Washington Lincoln 19 High Fair 1987 Other
Shiflett Reservoir No. 1 Washington Chelan 19 High Fair 1945 Irrigation
Koehn Ranch Reservoir Washington Grant 19 High Satisfactory 2009 Irrigation
Centralia Coal Mine Dam No 44 Washington Lewis 19 Low — 1975 Tailings
Pacific Nw Sugar CO Condensation Pond Washington Grant 19 Low — 1998 Other
Snoqualmie Falls Washington King 19 Low Satisfactory 1898 Hydroelectric
Whatcom Lake Dam Washington Whatcom 19 High Satisfactory 1937 Recreation
Horn School Rest Area Sewage Lagoon Washington Whitman 19 High Satisfactory 1996 Other
Skagit Lake Dam Washington Skagit 19 Low — 1971 Recreation
Limekiln Dam Washington San Juan 19 Low — 1976 Recreation
Thorald Dam Washington San Juan 19 Low — 1988 Irrigation
Headquarters Landfill Leachate Pond Washington Cowlitz 19 Significant Satisfactory 1993 Other
Sinlahekin Dam No 2 Washington Okanogan 18 High Fair 1949 Recreation
Islewood Dam Washington Skagit 18 High Fair 1971 Irrigation
Tapps Lake Dike No10 Washington Pierce 18 High Satisfactory 1911 Recreation
Des Moines Ck Reg Det Facility East Berm Washington King 18 High Satisfactory 2009 Flood Risk Reduction
Dragoon Lake Dam Washington Spokane 18 Low — 1913 Recreation
Tree Top Prosser Lagoons 2 & 3 Washington Benton 18 Significant Fair 1991 Other
Tapps Lake Dike No 1 Washington Pierce 18 High Satisfactory 1911 Recreation
Vaagen Mitigation Control Structure Washington Pend Oreille 18 Low — 1990 Flood Risk Reduction
Chapman Lake Dam Washington Spokane 18 Low — 1940 Recreation
Centralia Coal Mine Dam No 8a Washington Lewis 18 High Satisfactory 1972 Tailings
Erickson Dam Washington Clark 18 Significant Poor 1968 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.