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
- Grand Coulee Dam550 ft
- Ross540 ft
- Mud Mountain Dam425 ft
- Swift No. 1412 ft
- Diablo389 ft
High Hazard Dams
- Grand Coulee DamHigh
- RossHigh
- Mud Mountain DamHigh
- Swift No. 1High
- DiabloHigh
Poor Condition Dams
- Lower BakerPoor
- WellsPoor
- Van Stone Tailings DamPoor
- Indian Creek DamPoor
- Butterworth DamPoor
All Dams in Washington
Showing 226–241 of 241
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Boeing Creek Park North Pond Dam King County | 54 | 1998 | High | Satisfactory |
| Boeing Creek M1 Detention Dam King County | 40 | 1983 | High | Satisfactory |
| Bitter Lake Reservoir King County | 27 | 1958 | High | Satisfactory |
| Billingsley Dam Douglas County | 15 | 1949 | Low | Satisfactory |
| Beryl Baker Dam Stevens County | 31 | 1977 | High | Satisfactory |
| Bellingham Airport Sw Detention Pond 3 Whatcom County | 8 | 2011 | High | Satisfactory |
| Beehive Saddle Dam Chelan County | 10 | 1953 | High | Satisfactory |
| Beehive Dam Chelan County | 38 | 1953 | High | Satisfactory |
| Barrier Dam Lewis County | 16 | 1968 | Low | Satisfactory |
| Baby Gap Ranch Reservoir Benton County | 13 | 2015 | High | Satisfactory |
| Asamera Cannon Mine Tailings Dam Chelan County | 340 | 1986 | High | Satisfactory |
| Anderson Lake Dam Mason County | 28 | 1966 | High | Satisfactory |
| Alder Pierce County | 330 | 1945 | High | Satisfactory |
| Aberdeen Lake Dam Grays Harbor County | 33 | 1928 | High | Satisfactory |
| 60th Street Stormwater Detention Dam Snohomish County | 104 | 1988 | Significant | Satisfactory |
| 3 Amigos Reservoir Chelan County | 18 | 2003 | High | Satisfactory |
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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.