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 176–191 of 191
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Cardinal Crest Reservoir Dam Franklin County | 14 | 1990 | High | Fair |
| Camping Dairy Lagoon Dam Whatcom County | 7 | 1980 | High | Fair |
| Camano Island Cattle CO Dam Adams County | 17 | 2004 | High | Fair |
| Bueler Dairy Waste Storage Pond Snohomish County | 15 | 2000 | Significant | Fair |
| Buck Mountain Reservoir Dam No 3 San Juan County | 20 | 1985 | High | Fair |
| Buck Mountain Reservoir Dam No 2 San Juan County | 32 | 1985 | High | Fair |
| Buck Mountain Reservoir Dam No 1 San Juan County | 17 | 1985 | High | Fair |
| Boyd Lower Reservoir Dam San Juan County | 24 | 1960 | High | Fair |
| Boundary Pend Oreille County | 360 | 1967 | High | Fair |
| Bosma Old Pond 1 Yakima County | 9 | 2000 | Significant | Fair |
| Boman Reservoir Dam Ferry County | 23 | 1977 | High | Fair |
| Berger Dam Thurston County | 11 | 1970 | High | Fair |
| Barlond Dairy Lagoon Snohomish County | 11 | 1990 | Significant | Fair |
| Badger Mountain Irr Dist Reservoir Expan Benton County | 14 | 1977 | High | Fair |
| Antilon Lake Dam Chelan County | 62 | 1913 | High | Fair |
| 204th Street Stormwater Detention Basin King County | 9 | 2001 | Significant | Fair |
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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.