Washington Dams

817 dams tracked by the National Inventory of Dams

Total Dams

817

High Hazard

404

49.4%

Poor / Unsatisfactory

65

Average Age

55 yrs

Hazard Classification

High404 (49.4%)
Significant98 (12.0%)
Low312 (38.2%)

Condition Assessment

Satisfactory241 (29.5%)
Fair191 (23.4%)
Poor / Unsatisfactory65 (8.0%)
Not Rated320 (39.2%)

Federal

69

State

42

Local

193

Private

392

Tallest Dams

High Hazard Dams

All Dams in Washington

Showing 5175 of 817

Dam NameHeight (ft)YearHazardCondition
Black Lake Dam

Adams County

71938LowNot Rated
Blair Reservoir Dam

Benton County

281937HighPoor
Blazing Tree Ranch Pond 5 North Dam

San Juan County

251965LowNot Rated
Blazing Tree Ranch Pond 5 South Dam

San Juan County

251965LowNot Rated
Blazing Tree Ranch Pond 6 Dam

San Juan County

251977LowNot Rated
Blue Lake Dam Okanogan Co

Okanogan County

321923LowNot Rated
Boeing Auburn Drainage Ditch Detention D

King County

71994LowNot Rated
Boeing Creek M1 Detention Dam

King County

401983HighSatisfactory
Boeing Creek Park North Pond Dam

King County

541998HighSatisfactory
Boeing Flood Control Dam

Snohomish County

481967HighSatisfactory
Boman Reservoir Dam

Ferry County

231977HighFair
Bonaparte Lake Dam

Okanogan County

91957LowNot Rated
Bonney Lake Wsu Infiltration Pond

Pierce County

92018HighSatisfactory
Bosma Old Pond 1

Yakima County

92000SignificantFair
Boundary

Pend Oreille County

3601967HighFair
Box Canyon Forebay Dam

Pend Oreille County

321955LowSatisfactory
Boyd Lower Reservoir Dam

San Juan County

241960HighFair
Bremerton National Airport Detention Dam

Kitsap County

471995LowNot Rated
Bremerton Reservoir No 4

Kitsap County

171917HighSatisfactory
Brown Dam Lincoln Co

Lincoln County

181965LowNot Rated
Buck Mountain Reservoir Dam No 1

San Juan County

171985HighFair
Buck Mountain Reservoir Dam No 2

San Juan County

321985HighFair
Buck Mountain Reservoir Dam No 3

San Juan County

201985HighFair
Bueler Dairy Waste Storage Pond

Snohomish County

152000SignificantFair
Bullard Dam

Whatcom County

111969HighSatisfactory
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.