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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.

Name State County Height (ft) Hazard Condition Year Purpose
Little Twin Lakes Dam Washington Mason 25 Low — 1966 Recreation
Blazing Tree Ranch Pond 5 North Dam Washington San Juan 25 Low — 1965 Irrigation
Blazing Tree Ranch Pond 5 South Dam Washington San Juan 25 Low — 1965 Irrigation
Fairview Reservoir No 2 Washington Grays Harbor 25 High Fair 1921 Water Supply
Blazing Tree Ranch Pond 6 Dam Washington San Juan 25 Low — 1977 Irrigation
Ice Harbor Ranch Block 211 Reservoir Washington Franklin 25 Low — 2013 Water Supply
Van Stone Pit Lake Dam Washington Stevens 25 High Poor 1999 Tailings
Tapps Lake Dike No 11 Washington Pierce 25 High Satisfactory 1911 Recreation
Minckler Dam B Washington Island 25 High Fair 1975 Recreation
Locke Dam Washington Pend Oreille 25 High Satisfactory 1973 Flood Risk Reduction
Zylstra Dam No 2 Washington San Juan 25 Low — 1963 Irrigation
Spectacle Lake Dike Washington Okanogan 25 Low Not Available 1969 Irrigation
Elwick Dam Washington Clallam 25 High Poor 1962 Irrigation
Swano Lake Dam Washington Grays Harbor 24 High Poor 1949 Fish and Wildlife Pond
Lunds Gulch Creek Regional Stormwater Detention Pond Washington Snohomish 24 High Fair 1992 Flood Risk Reduction
Kinross Old Reclaim Pond Washington Ferry 24 Significant Satisfactory 2008 Tailings
Upper Falls Control Works Washington Spokane 24 Low Satisfactory 1922 Hydroelectric
Duncan Creek Dam Washington Skamania 24 Low — 1963 Fish and Wildlife Pond
Kennewick No 2 Aerated Wastewater Lagoon Washington Benton 24 High Fair 1975 Other
Deer Park Ww Storage Lagoon No 3 Washington Spokane 24 High Satisfactory 1997 Other
Hecla Groundwater Management Impoundment Washington Ferry 24 Significant Fair 2015 Other
Kennewick No 1 Aerated Wastewater Lagoon Washington Benton 24 High Satisfactory 1975 Other
Talus P5 Stormwater Detention Dam Washington King 24 High Satisfactory 2002 Flood Risk Reduction
Issaquah Highlands Npe Pond Washington King 24 High Fair 2003 Flood Risk Reduction
Kayak Lake Dam Washington Snohomish 24 High Poor 1965 Recreation
Kennewick Sewage Lagoon System Washington Benton 24 High Satisfactory 1997 Other
Ponderay Newsprint Mill Settling Lagoon Washington Pend Oreille 24 Low — 1989 Other
Peabody Heights Reservoir Washington Clallam 24 High Satisfactory 1925 Water Supply
Sinlahekin Dam No 3 Washington Okanogan 24 High Satisfactory 1950 Recreation
Olympic View Landfill Leachate Lagoon 1 Washington Kitsap 24 High Satisfactory 1997 Other
Chiawana Frenchman Hills Dam Washington Grant 24 High Fair 1995 Irrigation
George Deruyter & Son Dairy Lagoon 2 Washington Yakima 24 High — 2022 Other
Boyd Lower Reservoir Dam Washington San Juan 24 High Fair 1960 Irrigation
Welcome Lake Dam Washington King 24 High Fair 1959 Recreation
Rockford Wastewater Pond No. 3 Washington Spokane 24 Significant Satisfactory 1999 Other
Everett Reservoir No 4 Washington Snohomish 24 High Satisfactory 1952 Water Supply
Simplot Lrar Lagoon Washington Grant 24 Low — 2006 Other
Finley Ranch Reservoir Washington Benton 23 High Satisfactory 2013 Irrigation
Durhack Dam No 1 Washington San Juan 23 Low — 1968 Recreation
Boman Reservoir Dam Washington Ferry 23 High Fair 1977 Irrigation
Deer Park Ww Storage Lagoons 1 & 2 Washington Spokane 23 High Satisfactory 1985 Other
Cow Palace Lagoon 1 Washington Yakima 23 Significant Fair 2000 Other
Con Agra Foods Main Storage Basin Dam Washington Franklin 23 Low — 1970 Other
Roche Pomona Dam Washington Yakima 23 High Satisfactory 1995 Irrigation
Mccormick North Phase 3 Storm Pond Washington Kitsap 23 High — 2023 Flood Risk Reduction
Rec Silicon Wastewater Pond Washington Grant 23 Low Fair 2009 Other
Connell Wastewater Lagoon 1a Washington Franklin 23 Significant Fair 2009 Other
Paterson Ranch Reservoir Washington Benton 23 High Fair 2010 Irrigation
Roosevelt Reservoir Washington King 23 High Satisfactory 1910 Water Supply
Holiday Lake Dam Washington Whatcom 23 High Fair 1967 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.