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 326–350 of 817
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Issaquah Highlands Falls Pond Dam King County | 22 | 2008 | High | Satisfactory |
| Issaquah Highlands Np2 Pond Dam King County | 28 | 2002 | High | Fair |
| Issaquah Highlands Npe Pond King County | 24 | 2003 | High | Fair |
| Issaquah Highlands Reid Pond Dam King County | 38 | 2003 | High | Fair |
| Issaquah Highlands South Pond Dam King County | 27 | 2003 | High | Fair |
| Jays Pond Dam San Juan County | 8 | 1973 | High | Fair |
| Jean Lake Dam King County | 15 | 1963 | Low | Not Rated |
| Jefferts Dam San Juan County | 15 | 1988 | Low | Not Rated |
| Jenkins Webley Dam Douglas County | 15 | 1945 | Low | Not Rated |
| Johnson Creek Reservoir Dam Klickitat County | 18 | 1982 | High | Fair |
| Johnson Pond Dam King County | 18 | 2011 | High | Fair |
| Jones Dam Clark County | 20 | 1977 | Low | Not Rated |
| Jorgensen Dam Douglas County | 10 | 1946 | Low | Not Rated |
| Judy Reservoir Dam A Skagit County | 61 | 1946 | High | Fair |
| Judy Reservoir Dam B Skagit County | 80 | 1946 | High | Fair |
| K2h Farms Mcnary No 1 Reservoir Benton County | 15 | 1980 | Low | Not Rated |
| Kachess Dam Kittitas County | 115 | 1912 | High | Not Available |
| Kaufman Dam Thurston County | 38 | 1967 | Low | Not Rated |
| Kayak Lake Dam Snohomish County | 24 | 1965 | High | Poor |
| Keechelus Dam Kittitas County | 128 | 1917 | High | Not Available |
| Kennewick No 1 Aerated Wastewater Lagoon Benton County | 24 | 1975 | High | Satisfactory |
| Kennewick No 2 Aerated Wastewater Lagoon Benton County | 24 | 1975 | High | Fair |
| Kennewick Sewage Lagoon System Benton County | 24 | 1997 | High | Satisfactory |
| Kessler Dam Garfield County | 15 | 1967 | Low | Not Rated |
| Kettwig Wildlife Dam Pend Oreille County | 13 | 1979 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.