Dams in Mason County, Washington
16Total Dams
8High Hazard
2Significant
Dam Safety in Mason County, Washington
Mason County has 16 dams tracked in the National Inventory of Dams. Of these, 8 are classified as high hazard — meaning failure would probably cause loss of human life. Another 2 carry a significant hazard classification. Currently, 1 dams have a condition assessment of poor or unsatisfactory.
The average dam in Mason County is 54 years old. The most common purpose is recreation. The tallest dam is Cushman No 2 at 275 ft.
Explore more: Oldest dams in Washington · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Cushman No 2 | High | Satisfactory | 275 | Hydroelectric | 1930 |
| Cushman No 1 | High | Fair | 272 | Hydroelectric | 1926 |
| Limerick Lake Dam | High | Satisfactory | 34 | Recreation | 1966 |
| Timberlakes Dam | High | Satisfactory | 29 | Recreation | 1968 |
| Anderson Lake Dam | High | Satisfactory | 28 | Recreation | 1966 |
| Belfair Wwtp Treated Water Storage Pond | High | Poor | 22 | Other | 2014 |
| Leprechaun Lake Dam | High | Satisfactory | 16 | Recreation | 1966 |
| Cranberry Lake Stormwater Detention Dam | High | Satisfactory | 10 | Flood Risk Reduction | 1990 |
| North Ranch Storage Lagoon | Significant | Satisfactory | 18 | Other | 2018 |
| North Bay Water Reclamation Pond 1 | Significant | Satisfactory | 14 | Other | 2000 |
| Fawn Lake Dam | Low | 36 | Recreation | 1966 | |
| Little Twin Lakes Dam | Low | 25 | Recreation | 1966 | |
| Christine Lake Dam | Low | 18 | Recreation | 1967 | |
| Bennettsen Lake Dam | Low | 11 | Recreation | 1971 | |
| Armstrong Lake Dam | Low | 10 | Recreation | 1968 | |
| Melbourne Lake Dam | Low | 9 | Fish and Wildlife Pond | 1957 |