Dams in Lewis County, Washington
34Total Dams
9High Hazard
6Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Mossyrock | High | Unsatisfactory | 606 | Hydroelectric | 1968 |
| Mayfield | High | Unsatisfactory | 250 | Hydroelectric | 1963 |
| Centralia Coal Mine Pond 46 Dam | High | Fair | 30 | Flood Risk Reduction | 2004 |
| Carlisle Lake Dam | High | Poor | 19 | Fish and Wildlife Pond | 1920 |
| Centralia Coal Mine Dam No 8a | High | Satisfactory | 18 | Tailings | 1972 |
| Centralia Coal Mine Pond 46a Dam | High | Satisfactory | 16 | Flood Risk Reduction | 2004 |
| Packwood Lake | High | Satisfactory | 14 | Hydroelectric | 1964 |
| Centralia Coal Mine Dam No 8 | High | Satisfactory | 12 | Tailings | 1972 |
| Koppert Pond | High | Fair | 11 | Recreation | 1984 |
| Cowlitz Falls | Significant | Satisfactory | 145 | Hydroelectric | 1994 |
| Centralia Coal Mine Dam No 3b | Significant | Fair | 140 | Tailings | 1980 |
| Centralia Coal Mine Dam No 3c North | Significant | Satisfactory | 134 | Tailings | 1987 |
| Centralia Coal Mine Dam No 3c South | Significant | Satisfactory | 69 | Tailings | 1987 |
| Centralia Coal Mine Dam No 3c East | Significant | Satisfactory | 21 | Tailings | 1987 |
| Chehalis Regional Water Reclamation Pond | Significant | Satisfactory | 17 | Other | 2005 |
| Centralia Coal Mine Dam No 3d | Low | 285 | Tailings | 1988 | |
| South Bank Dairy Lagoon Dam | Low | 40 | Other | 1980 | |
| Swofford Pond | Low | Satisfactory | 26 | Hydroelectric | |
| Centralia Coal Mine Dam No 5c | Low | 20 | Tailings | 1970 | |
| Centralia Coal Mine Dam No 44 | Low | 19 | Tailings | 1975 | |
| Koa Dam No 1 | Low | 18 | Recreation | 1965 | |
| Long Bell Mill Pond Dam | Low | 18 | Other | 1943 | |
| Centralia Coal Mine Dam No 3a | Low | 18 | Tailings | 1970 | |
| Barrier Dam | Low | Satisfactory | 16 | Hydroelectric | 1968 |
| Mayfield Plunge Pool Barrier | Low | Satisfactory | 14 | Hydroelectric | 1963 |
| Centralia Coal Mine Dam No 36a | Low | 14 | Tailings | 1989 | |
| Centralia Coal Mine Dam No 5 | Low | 14 | Tailings | 1971 | |
| Centralia Power Plant Surge Pond Dam | Low | 13 | Water Supply | 1971 | |
| Centralia Coal Mine Dam No 36 | Low | 13 | Tailings | 1989 | |
| Centralia Coal Mine Dam No 19a | Low | 13 | Tailings | 1977 | |
| Centralia Coal Mine Dam No 19 | Low | 13 | Tailings | 1977 | |
| Centralia Coal Mine Dam No 6b | Low | 13 | Tailings | 1970 | |
| Powell Dam | Low | 11 | Irrigation | 1963 | |
| Winlock Waterski Pond Dam | Low | 11 | Recreation | 1990 |