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 26–50 of 817
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Barrier Dam Lewis County | 16 | 1968 | Low | Satisfactory |
| Bayley Lake Dam Stevens County | 9 | 1924 | Low | Not Rated |
| Beacon Hill Reservoir Grays Harbor County | 30 | 1935 | High | Poor |
| Beaver Lake Dam Okanogan County | 10 | 1910 | Low | Not Rated |
| Beehive Dam Chelan County | 38 | 1953 | High | Satisfactory |
| Beehive Saddle Dam Chelan County | 10 | 1953 | High | Satisfactory |
| Beitey Lake Dam Stevens County | 17 | 1934 | High | Poor |
| Belfair Wwtp Treated Water Storage Pond Mason County | 22 | 2014 | High | Poor |
| Bellevue Detention Pond 133 King County | 12 | 1983 | Low | Not Rated |
| Bellevue Detention Pond 165 King County | 16 | 1983 | Low | Not Rated |
| Bellevue Detention Pond 179 North King County | 26 | 1977 | Low | Not Rated |
| Bellevue Detention Pond 197 King County | 12 | 1983 | Low | Not Rated |
| Bellingham Airport Sw Detention Pond 3 Whatcom County | 8 | 2011 | High | Satisfactory |
| Bennettsen Lake Dam Mason County | 11 | 1971 | Low | Not Rated |
| Berger Dam Thurston County | 11 | 1970 | High | Fair |
| Berge Reservoir Dam Skamania County | 31 | 1954 | Low | Not Rated |
| Bernsens 810 Reservoir Dam No 1 Franklin County | 15 | 1979 | Low | Not Rated |
| Bernsens 810 Reservoir Dam No 2 Franklin County | 15 | 1979 | Low | Not Rated |
| Bernsens 810 Reservoir Dam No 3 Franklin County | 10 | 1979 | Low | Not Rated |
| Beryl Baker Dam Stevens County | 31 | 1977 | High | Satisfactory |
| Beth Lake Okanogan County | 16 | — | Significant | Not Rated |
| Billingsley Dam Douglas County | 15 | 1949 | Low | Satisfactory |
| Binford Reservoir Dam Clark County | 28 | 1953 | Low | Not Rated |
| Bitter Lake Reservoir King County | 27 | 1958 | High | Satisfactory |
| Blackhorse East Dam Spokane County | 12 | 1960 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.