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 226–250 of 404
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lakemont Stormwater Pond King County | 13 | 1992 | High | Satisfactory |
| Lakeland South Pond No 1 Pierce County | 13 | 2003 | High | Fair |
| Lake Kittyprince Dam King County | 10 | 1967 | High | Fair |
| Lake Forest Park Reservoir King County | 30 | 1962 | High | Satisfactory |
| La Grande Thurston County | 217 | 1944 | High | Satisfactory |
| Lacamas & Round Lakes Upper Dam Clark County | 28 | 1936 | High | Satisfactory |
| Kyte Dam Thurston County | 20 | 1966 | High | Poor |
| Koura Dam Kitsap County | 28 | 1949 | High | Poor |
| Koppert Pond Lewis County | 11 | 1984 | High | Fair |
| Koehn Ranch Reservoir Grant County | 19 | 2009 | High | Satisfactory |
| Klonaqua Lake Dam Chelan County | 35 | 1933 | High | Poor |
| Klahanie Stormwater Detention Dam No 13 King County | 10 | 1989 | High | Fair |
| Kinross Gold Kettle River Tailings Dam Ferry County | 189 | 1994 | High | Satisfactory |
| Kennewick Sewage Lagoon System Benton County | 24 | 1997 | High | Satisfactory |
| Kennewick No 2 Aerated Wastewater Lagoon Benton County | 24 | 1975 | High | Fair |
| Kennewick No 1 Aerated Wastewater Lagoon Benton County | 24 | 1975 | High | Satisfactory |
| Keechelus Dam Kittitas County | 128 | 1917 | High | Not Available |
| Kayak Lake Dam Snohomish County | 24 | 1965 | High | Poor |
| Kachess Dam Kittitas County | 115 | 1912 | High | Not Available |
| Judy Reservoir Dam B Skagit County | 80 | 1946 | High | Fair |
| Judy Reservoir Dam A Skagit County | 61 | 1946 | High | Fair |
| Johnson Pond Dam King County | 18 | 2011 | High | Fair |
| Johnson Creek Reservoir Dam Klickitat County | 18 | 1982 | High | Fair |
| Jays Pond Dam San Juan County | 8 | 1973 | High | Fair |
| Issaquah Highlands South Pond Dam King County | 27 | 2003 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.