Dams in Douglas County, Washington
15Total Dams
4High Hazard
1Significant
Dam Safety in Douglas County, Washington
Douglas County has 15 dams tracked in the National Inventory of Dams. Of these, 4 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification.
The average dam in Douglas County is 61 years old. The most common purpose is irrigation. The tallest dam is Chief Joseph Dam at 230 ft.
Explore more: Oldest dams in Washington · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Chief Joseph Dam | High | Not Available | 230 | Hydroelectric | 1955 |
| Rock Island | High | Satisfactory | 71 | Hydroelectric | 1932 |
| Columbia River Orchard Reservoir 2 | High | Satisfactory | 13 | Irrigation | 2008 |
| Isaak Dam No 4 | High | Fair | 9 | Irrigation | 1987 |
| Lincoln Rock S.p. Evaporative Lagoons | Significant | Satisfactory | 15 | Other | 1981 |
| Lower Rimrock Dam | Low | 67 | Recreation | 1972 | |
| Waterville Effluent Storage Pond | Low | 30 | Other | 1981 | |
| Billingsley Dam | Low | Satisfactory | 15 | Flood Risk Reduction | 1949 |
| Jenkins Webley Dam | Low | 15 | Irrigation | 1945 | |
| Mckay Dam | Low | 15 | Flood Risk Reduction | 1961 | |
| Jorgensen Dam | Low | 10 | Irrigation | 1946 | |
| Carl Malone Wildlife Pond | Low | 9 | Flood Risk Reduction | 1992 | |
| Waterville Sewage Treatment Pond | Low | 8 | Other | 1954 | |
| Sims Dam | Low | 7 | Flood Risk Reduction | 1960 | |
| Kohne Dam No 2 | Low | 7 | Irrigation | 1950 |