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 601–625 of 817
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eightmile Lake Outlet Dam Chelan County | 22 | 1933 | High | Poor |
| Educket Creek Dam Clallam County | 35 | 1983 | Significant | Not Available |
| Eden Creek Dam Pierce County | 40 | 1937 | Low | Not Rated |
| Edaleen Dairy Waste Storage Pond No 3 Whatcom County | 12 | 2007 | High | Fair |
| Edaleen Dairy Waste Storage Pond No. 2 Whatcom County | 8 | 1989 | High | Fair |
| Echo Falls Golf Course Reservoir No 2 Snohomish County | 30 | 2000 | Low | Not Rated |
| Easton Diversion Dam Kittitas County | 66 | 1929 | High | Not Available |
| Eaglemont Storm Pond Snohomish County | 14 | 2014 | High | Poor |
| Eagle Lake Dam Franklin County | 8 | 1955 | Low | Not Rated |
| Durhack Dam No 5 San Juan County | 15 | 1972 | Low | Not Rated |
| Durhack Dam No 4 San Juan County | 21 | 1968 | Low | Not Rated |
| Durhack Dam No 3 San Juan County | 18 | 1968 | Low | Not Rated |
| Durhack Dam No 2 San Juan County | 10 | 1968 | Low | Not Rated |
| Durhack Dam No 1 San Juan County | 23 | 1968 | Low | Not Rated |
| Duncan Dam No 2 Pend Oreille County | 18 | 1966 | Low | Not Rated |
| Duncan Creek Dam Skamania County | 24 | 1963 | Low | Not Rated |
| Dry Falls Dam Grant County | 123 | 1949 | High | Not Available |
| Dragoon Lake Dam Spokane County | 18 | 1913 | Low | Not Rated |
| Dosser Reservoir Dam Spokane County | 14 | 1959 | Low | Not Rated |
| Dohman Creek Dam Pacific County | 41 | 1978 | Low | Not Rated |
| D&J Dairy Consolidated Lagoon No. 1 Yakima County | 6 | 2021 | Significant | Not Rated |
| Dionysus Dam Franklin County | 18 | 1973 | High | Fair |
| Diamond Lake Sewage Lagoon No 1 Pend Oreille County | 12 | 1988 | High | Satisfactory |
| Diamond Lake Aeration Lagoon No 3 Pend Oreille County | 17 | 1987 | High | Satisfactory |
| Diamond Lake Aeration Lagoon No 2 Pend Oreille County | 16 | 1987 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.