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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
Upriver Dam Forebay Washington Spokane 30 Significant Satisfactory 1987 Hydroelectric
Morse Lake Overflow Dike Washington King 30 Low — 1904 Water Supply
Waterville Effluent Storage Pond Washington Douglas 30 Low — 1981 Other
Beacon Hill Reservoir Washington Grays Harbor 30 High Poor 1935 Water Supply
Williams Lake Sewer Dist 2 Lagoons Washington Spokane 30 Low — 2007 Other
Lake Forest Park Reservoir Washington King 30 High Satisfactory 1962 Water Supply
Hilltop Waterski Pond Washington Snohomish 30 High Fair 1995 Recreation
Spring Hill Dam Washington Chelan 30 High Satisfactory 1918 Irrigation
Timberlakes Dam Washington Mason 29 High Satisfactory 1968 Recreation
Stout Reservoir Dam Washington Okanogan 29 High Satisfactory 1958 Fire Protection, Stock, Or ...
Lamb Weston Richland Lrad Lagoon Washington Benton 29 Significant Satisfactory 2017 Other
Cow Palace Lagoon 2 Washington Yakima 28 High Satisfactory 2017 Other
Blair Reservoir Dam Washington Benton 28 High Poor 1937 Irrigation
Martin Marietta Sludge Pond Washington Klickitat 28 Low — 1981 Other
Wenatchee Heights Reservoir No 2 Dam Washington Chelan 28 High Fair 1998 Irrigation
Binford Reservoir Dam Washington Clark 28 Low — 1953 Irrigation
Tapps Lake Dike No 6 Washington Pierce 28 High Satisfactory 1911 Recreation
Lacamas & Round Lakes Upper Dam Washington Clark 28 High Satisfactory 1936 Recreation
Issaquah Highlands Np2 Pond Dam Washington King 28 High Fair 2002 Flood Risk Reduction
Hannegan Road Detention Basin Washington Whatcom 28 High Satisfactory 1996 Flood Risk Reduction
Anderson Lake Dam Washington Mason 28 High Satisfactory 1966 Recreation
Steilacoom Lake Dam Washington Pierce 28 High Satisfactory 1989 Fish and Wildlife Pond
Shell Refinery Water Storage Reservoir Washington Skagit 28 Low — 1958 Water Supply
Tapps Lake Dike No 5 Washington Pierce 28 High Satisfactory 1911 Recreation
Reflection Lake South Dam Washington Spokane 28 High Fair 1955 Recreation
Calispell Creek Dike and Pump Plant Washington Pend Oreille 28 High Poor — Hydroelectric
Sundstrom Dam No 2 Washington San Juan 28 Low — 1984 Irrigation
Koura Dam Washington Kitsap 28 High Poor 1949 Irrigation
Tapps Lake Dike No 15 Washington Pierce 27 Low Satisfactory 1911 Recreation
Lower Granite Lock and Dam - East Levee Washington Nez Perce 27 High Not Available 1974 Navigation
Issaquah Highlands South Pond Dam Washington King 27 High Fair 2003 Flood Risk Reduction
Smrekar Reservoir Dam Washington Whatcom 27 Low — 1954 Irrigation
Centralia Coal Mine Dam No 32b Washington Thurston 27 Low Fair 1991 Flood Risk Reduction
Bitter Lake Reservoir Washington King 27 High Satisfactory 1958 Water Supply
Othello Primary Treatment Pond 1a Washington Adams 27 Low — 1982 Other
Southwest Genesee Street Detention Dam Washington King 27 High Fair 1974 Flood Risk Reduction
Port Townsend Paper Asb Pond Washington Jefferson 27 High Satisfactory 1978 Other
Lower Granite Lock and Dam - West Levee Washington Nez Perce 27 High Not Available 1974 Navigation
Goodrow Dam Washington San Juan 27 Low — 1964 Recreation
High Woodlands Stormwater Detention Dam Washington King 27 Low — 1991 Flood Risk Reduction
Scooteney Headworks Dike Washington Franklin 26 Low Not Available 1952
Meyers Falls Washington Stevens 26 Low Satisfactory 1961 Hydroelectric
Swofford Pond Washington Lewis 26 Low Satisfactory — Hydroelectric
Bellevue Detention Pond 179 North Washington King 26 Low — 1977 Flood Risk Reduction
Chinook Water District Dam Washington Pacific 26 Low — 1991 Water Supply
Redmond Ridge Cedar Dam Washington King 26 High Fair 2000 Flood Risk Reduction
Lacamas & Round Lakes Lower Dam Washington Clark 26 Low Satisfactory 1936 Recreation
Blazing Tree Ranch Pond 6 Dam Washington San Juan 25 Low — 1977 Irrigation
Spectacle Lake Dike Washington Okanogan 25 Low Not Available 1969 Irrigation
Columbia Marsh Unit #1 Dam Washington Grant 25 Low Poor 1958 Fish and Wildlife Pond

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.