Dams in Chelan County, Washington
37Total Dams
32High Hazard
1Significant
Dam Safety in Chelan County, Washington
Chelan County has 37 dams tracked in the National Inventory of Dams. Of these, 32 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification. Currently, 7 dams have a condition assessment of poor or unsatisfactory.
The average dam in Chelan County is 79 years old. The most common purpose is irrigation. The tallest dam is Asamera Cannon Mine Tailings Dam at 340 ft.
Explore more: Oldest dams in Washington · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Asamera Cannon Mine Tailings Dam | High | Satisfactory | 340 | Flood Risk Reduction | 1986 |
| Wells | High | Poor | 160 | Hydroelectric | 1968 |
| Rocky Reach | High | Satisfactory | 130 | Hydroelectric | 1962 |
| Upper Wheeler Dam | High | Fair | 65 | Irrigation | 1922 |
| Stemilt Main Dam | High | Fair | 65 | Irrigation | 1962 |
| Antilon Lake Dam | High | Fair | 62 | Recreation | 1913 |
| Upper Loop Reservoir | High | Satisfactory | 47 | Irrigation | 2015 |
| Wapato Lake Dam | High | Fair | 40 | Recreation | 1912 |
| Beehive Dam | High | Satisfactory | 38 | Irrigation | 1953 |
| Klonaqua Lake Dam | High | Poor | 35 | Irrigation | 1933 |
| Spring Hill Dam | High | Satisfactory | 30 | Irrigation | 1918 |
| Wenatchee Heights Reservoir No 2 Dam | High | Fair | 28 | Irrigation | 1998 |
| Eightmile Lake Outlet Dam | High | Poor | 22 | Irrigation | 1933 |
| Wood Reservoir Dam No 2 | High | Satisfactory | 22 | Irrigation | 1989 |
| Wood Reservoir Dam No 1 | High | Satisfactory | 22 | Irrigation | 1991 |
| Great Depression Dam | High | Fair | 22 | Irrigation | 1998 |
| Shiflett Reservoir No. 1 | High | Fair | 19 | Irrigation | 1945 |
| Stemilt Equalizing Reservoir | High | Satisfactory | 19 | Irrigation | 1985 |
| H & H Reservoir Dam No 1 | High | Satisfactory | 19 | Irrigation | 1926 |
| Colchuck Lake Dam | High | Poor | 18 | Irrigation | 1930 |
| 3 Amigos Reservoir | High | Satisfactory | 18 | Irrigation | 2003 |
| Meadow Lake Dam | High | Poor | 17 | Irrigation | 1920 |
| Shiflett Reservoir No. 2 | High | Fair | 16 | Irrigation | 1945 |
| Upper Wheeler Saddle Dam | High | Fair | 15 | Irrigation | 1992 |
| Steffen Brothers Reservoir Dam | High | Fair | 15 | Irrigation | 1947 |
| Lily Lake Dam | High | Satisfactory | 14 | Irrigation | 1892 |
| Clear Lake Dam | High | Satisfactory | 13 | Irrigation | 1888 |
| Spring Hill Saddle Dam | High | Satisfactory | 12 | Irrigation | 1918 |
| Beehive Saddle Dam | High | Satisfactory | 10 | Irrigation | 1953 |
| Stemilt Saddle Dam | High | Fair | 9 | Irrigation | 1962 |
| Clear Lake Saddle Dam | High | Satisfactory | 8 | Irrigation | 1888 |
| Square Lake Dam | High | Poor | 7 | Irrigation | 1938 |
| Chelan | Significant | Fair | 66 | Hydroelectric | 1927 |
| Upper Snow Dam | Low | Poor | 10 | Water Supply | 1939 |
| Three Lakes Reservoir Dam | Low | 9 | Irrigation | 1908 | |
| Colchuck Lake Saddle Dam | Low | 9 | Irrigation | 1930 | |
| Nada Dam | Low | Satisfactory | 9 | Water Supply | 1939 |