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 176–200 of 312
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Koa Dam No 1 Lewis County | 18 | 1965 | Low | Not Rated |
| Kettwig Wildlife Dam Pend Oreille County | 13 | 1979 | Low | Not Rated |
| Kessler Dam Garfield County | 15 | 1967 | Low | Not Rated |
| Kaufman Dam Thurston County | 38 | 1967 | Low | Not Rated |
| K2h Farms Mcnary No 1 Reservoir Benton County | 15 | 1980 | Low | Not Rated |
| Jorgensen Dam Douglas County | 10 | 1946 | Low | Not Rated |
| Jones Dam Clark County | 20 | 1977 | Low | Not Rated |
| Jenkins Webley Dam Douglas County | 15 | 1945 | Low | Not Rated |
| Jefferts Dam San Juan County | 15 | 1988 | Low | Not Rated |
| Jean Lake Dam King County | 15 | 1963 | Low | Not Rated |
| Ione Mill Pond Pend Oreille County | 35 | 1914 | Low | Not Rated |
| Ice Harbor Ranch Block 211 Reservoir Franklin County | 25 | 2013 | Low | Not Rated |
| I405 Coal Creek Stormwater Detention Da King County | 31 | 1987 | Low | Not Rated |
| Horse Spring Coulee Dam Okanogan County | 67 | 1924 | Low | Not Rated |
| Homestead Lake Dam Pend Oreille County | 22 | 1971 | Low | Not Rated |
| Hill Lake Dam Stevens County | 12 | 1984 | Low | Not Rated |
| High Woodlands Stormwater Detention Dam King County | 27 | 1991 | Low | Not Rated |
| Higginbotham Reservoir Dam Grant County | 13 | 1947 | Low | Not Rated |
| Helsell Dam San Juan County | 16 | 1999 | Low | Not Rated |
| Heidenreich Dam San Juan County | 16 | 1972 | Low | Not Rated |
| Havvaski Waterski Pond Thurston County | 12 | 1992 | Low | Not Rated |
| Hansen Dam Lincoln County | 11 | 1962 | Low | Not Rated |
| Haller Dam Clallam County | 45 | 1945 | Low | Not Rated |
| Green Mountain Pond Clark County | 7 | 1987 | Low | Not Rated |
| Goodrow Dam San Juan County | 27 | 1964 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.