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 376–400 of 404
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Upper Mill Creek Stormwater Detention Da King County | 21 | 1990 | High | Satisfactory |
| Upper Sunlight Lake Dam Kittitas County | 22 | 1967 | High | Satisfactory |
| Upper Wheeler Dam Chelan County | 65 | 1922 | High | Fair |
| Upper Wheeler Saddle Dam Chelan County | 15 | 1992 | High | Fair |
| Upriver Dam Spokane County | 38 | 1937 | High | Poor |
| Van Stone Pit Lake Dam Stevens County | 25 | 1999 | High | Poor |
| Wanapum Kittitas County | 206 | 1965 | High | Fair |
| Wapato Lake Dam Chelan County | 40 | 1912 | High | Fair |
| Welcome Lake Dam King County | 24 | 1959 | High | Fair |
| Wells Chelan County | 160 | 1968 | High | Poor |
| Wenas Dam Yakima County | 90 | 1911 | High | Fair |
| Wenatchee Heights Reservoir No 2 Dam Chelan County | 28 | 1998 | High | Fair |
| West Bank Project Reservoir Franklin County | 34 | 2003 | High | Satisfactory |
| Weyerhaeuser Enumclaw Flood Control Dam King County | 30 | 1993 | High | Fair |
| Whatcom Lake Dam Whatcom County | 19 | 1937 | High | Satisfactory |
| Whistle Lake Dam Skagit County | 15 | 1925 | High | Poor |
| William Symington Dam Kitsap County | 39 | 1965 | High | Satisfactory |
| Windsor Waterski Pond Thurston County | 11 | 1992 | High | Fair |
| Wood Reservoir Dam No 1 Chelan County | 22 | 1991 | High | Satisfactory |
| Wood Reservoir Dam No 2 Chelan County | 22 | 1989 | High | Satisfactory |
| Wynoochee Grays Harbor County | 175 | 1972 | High | Satisfactory |
| Yale Cowlitz County | 323 | 1953 | High | Fair |
| Yale Saddle Dam Cowlitz County | 40 | 1953 | High | Unsatisfactory |
| Yellow Lake Outlet Dike King County | 10 | 1986 | High | Satisfactory |
| Yelm Canal Dike Thurston County | 35 | 1930 | High | Unsatisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.