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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
Potters Pond Dam Washington Stevens 12 Low Fair 1959 Fish and Wildlife Pond
Loon Lake Storage Lagoon No 2 Washington Stevens 12 High Satisfactory 1986 Other
Loon Lake Storage Lagoon No 1 Washington Stevens 12 High Satisfactory 1986 Other
South 336th Street Stormwater Dam No 1 Washington King 12 High Fair 1996 Flood Risk Reduction
Powell Dam Washington Lewis 11 Low — 1963 Irrigation
Berger Dam Washington Thurston 11 High Fair 1970 Recreation
Hansen Dam Washington Lincoln 11 Low — 1962 Flood Risk Reduction
Barlond Dairy Lagoon Washington Snohomish 11 Significant Fair 1990 Other
Quincy Brine Evaporation Ponds Washington Grant 11 Significant Fair 1989 Other
Koppert Pond Washington Lewis 11 High Fair 1984 Recreation
Conner Jarvis East Pond Washington King 11 Significant Satisfactory 2018 Flood Risk Reduction
Springdale Wastewater Pond System Washington Stevens 11 Low — 1995 Other
Minckler Dam A Washington Island 11 High Fair 1975 Recreation
Gamache Dam Washington Yakima 11 High Fair 1987 Irrigation
Snohomish Sewage Lagoon Washington Snohomish 11 Low — 1958 Other
Newcastle Vista Pond 3 Washington King 11 High Fair 2012 Flood Risk Reduction
Windsor Waterski Pond Washington Thurston 11 High Fair 1992 Recreation
Little Green Lake Dam Washington Okanogan 11 High Fair 1959 Fish and Wildlife Pond
Bullard Dam Washington Whatcom 11 High Satisfactory 1969 Recreation
Tesoro Water Storage Reservoir Washington Skagit 11 High Fair 1958 Water Supply
Bennettsen Lake Dam Washington Mason 11 Low — 1971 Recreation
Marysville Sewage Lagoon Washington Snohomish 11 Low — 1959 Other
Scabrock Feeders Dam 6c Washington Adams 11 Low — 1970 Other
Winlock Waterski Pond Dam Washington Lewis 11 Low — 1990 Recreation
Mountain View East Storm Ponds Washington Snohomish 11 High — 2021 Flood Risk Reduction
Longeway Dam Washington Ferry 11 Low — 1970 Recreation
Longview Sewage Lagoon No 2 Washington Cowlitz 11 Low — 1986 Other
Selah Aerated Lagoon Washington Yakima 11 High Fair 1985 Other
Gardner Dam Washington Snohomish 11 Low — 1961 Recreation
Crab Creek Flood Flat Water Control Structure Washington Grant 11 Low — 2024 Fish and Wildlife Pond
Seatac Airport Pond G Washington King 11 High Satisfactory 2009 Flood Risk Reduction
N Marysville Regional Stormwater Pond Washington Snohomish 11 High Satisfactory 2004 Flood Risk Reduction
Middle Pine Lake Dam Washington Spokane 11 Low Poor 1938 Fish and Wildlife Pond
Metaline Falls Wastewater Lagoon No 3 Washington Pend Oreille 11 Significant Fair 1963 Other
Quadrant East Campus Parcel 1 Washington King 11 Significant Satisfactory 2000 Flood Risk Reduction
Redmond Ridge East Srs 1 Pond No 1 Washington King 11 High Satisfactory 2013 Flood Risk Reduction
Tacoma Sportsman Pond Washington Pend Oreille 10 Low — 1954 Recreation
Beaver Lake Dam Washington Okanogan 10 Low — 1910 Recreation
Rosalia Sewage Lagoon Washington Whitman 10 Significant Fair 1989 Other
Jorgensen Dam Washington Douglas 10 Low — 1946 Irrigation
Scooteney Dike 1 Washington Franklin 10 Low Not Available 1952
Ringold Pond Dam Washington Franklin 10 Low — 1962 Fish and Wildlife Pond
Campbell Lake Dam Washington Okanogan 10 Low — 1948 Recreation
Sasse Reservoir Dam Washington Okanogan 10 Low — 1910 Recreation
Merry Dam Washington Grant 10 Low — 1976 Recreation
Lenice Dam Washington Grant 10 Low — 1976 Recreation
Shoecraft Lake Outlet Washington Snohomish 10 Low — 1952 Recreation
Dagger Lake Dam Washington Snohomish 10 Low — 1912 Recreation
Baker Lake Dam Washington Whatcom 10 Low — 1966 Irrigation
Roslyn Wastewater Lagoon No 3 Washington Kittitas 10 Low — 1973 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.