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 701–725 of 817
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Chambers Creek Reservoir Dam Pierce County | 22 | 1970 | Low | Not Rated |
| Chalfa Dam Okanogan County | 15 | 1940 | High | Satisfactory |
| Centralia Power Plant Surge Pond Dam Lewis County | 13 | 1971 | Low | Not Rated |
| Centralia Coal Mine Pond 46 Dam Lewis County | 30 | 2004 | High | Fair |
| Centralia Coal Mine Pond 46a Dam Lewis County | 16 | 2004 | High | Satisfactory |
| Centralia Coal Mine Dam No 8a Lewis County | 18 | 1972 | High | Satisfactory |
| Centralia Coal Mine Dam No 8 Lewis County | 12 | 1972 | High | Satisfactory |
| Centralia Coal Mine Dam No 6b Lewis County | 13 | 1970 | Low | Not Rated |
| Centralia Coal Mine Dam No 5c Lewis County | 20 | 1970 | Low | Not Rated |
| Centralia Coal Mine Dam No 5 Lewis County | 14 | 1971 | Low | Not Rated |
| Centralia Coal Mine Dam No 44 Lewis County | 19 | 1975 | Low | Not Rated |
| Centralia Coal Mine Dam No 3d Lewis County | 285 | 1988 | Low | Not Rated |
| Centralia Coal Mine Dam No 3c South Lewis County | 69 | 1987 | Significant | Satisfactory |
| Centralia Coal Mine Dam No 3c North Lewis County | 134 | 1987 | Significant | Satisfactory |
| Centralia Coal Mine Dam No 3c East Lewis County | 21 | 1987 | Significant | Satisfactory |
| Centralia Coal Mine Dam No 3b Lewis County | 140 | 1980 | Significant | Fair |
| Centralia Coal Mine Dam No 3a Lewis County | 18 | 1970 | Low | Not Rated |
| Centralia Coal Mine Dam No 36a Lewis County | 14 | 1989 | Low | Not Rated |
| Centralia Coal Mine Dam No 36 Lewis County | 13 | 1989 | Low | Not Rated |
| Centralia Coal Mine Dam No 32b Thurston County | 27 | 1991 | Low | Fair |
| Centralia Coal Mine Dam No 20c Thurston County | 10 | 1981 | Low | Not Rated |
| Centralia Coal Mine Dam No 19a Lewis County | 13 | 1977 | Low | Not Rated |
| Centralia Coal Mine Dam No 19 Lewis County | 13 | 1977 | Low | Not Rated |
| Cedar Way Stormwater Detention Dam Snohomish County | 31 | 1985 | High | Fair |
| Cedar Hills Landfill Csw Pond King County | 14 | 2016 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.