Dams in Ferry County, Washington
8Total Dams
3High Hazard
4Significant
Dam Safety in Ferry County, Washington
Ferry County has 8 dams tracked in the National Inventory of Dams. Of these, 3 are classified as high hazard — meaning failure would probably cause loss of human life. Another 4 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Ferry County is 48 years old. The most common purpose is tailings. The tallest dam is Kinross Gold Kettle River Tailings Dam at 189 ft.
Explore more: Oldest dams in Washington · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Kinross Gold Kettle River Tailings Dam | High | Satisfactory | 189 | Tailings | 1994 |
| Twin Lakes | High | Poor | 25 | Irrigation | 1931 |
| Boman Reservoir Dam | High | Fair | 23 | Irrigation | 1977 |
| Hecla-day Mine Aspen Tailings Dam | Significant | Fair | 95 | Tailings | 1940 |
| Hecla-day Mine Aspen Tailings Saddle Dam | Significant | Fair | 40 | Tailings | 1987 |
| Hecla Groundwater Management Impoundment | Significant | Fair | 24 | Other | 2015 |
| Kinross Old Reclaim Pond | Significant | Satisfactory | 24 | Tailings | 2008 |
| Longeway Dam | Low | 11 | Recreation | 1970 |