Dams in Pierce County, Washington
35Total Dams
24High Hazard
3Significant
Dam Safety in Pierce County, Washington
Pierce County has 35 dams tracked in the National Inventory of Dams. Of these, 24 are classified as high hazard — meaning failure would probably cause loss of human life. Another 3 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Pierce County is 76 years old. The most common purpose is recreation. The tallest dam is Alder at 330 ft.
Explore more: Oldest dams in Washington · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Alder | High | Satisfactory | 330 | Hydroelectric | 1945 |
| Tapps Lake Dike No 4 | High | Satisfactory | 48 | Recreation | 1911 |
| Steilacoom Lake Dam | High | Satisfactory | 28 | Fish and Wildlife Pond | 1989 |
| Tapps Lake Dike No 6 | High | Satisfactory | 28 | Recreation | 1911 |
| Tapps Lake Dike No 5 | High | Satisfactory | 28 | Recreation | 1911 |
| Tapps Lake Dike No 11 | High | Satisfactory | 25 | Recreation | 1911 |
| Tapps Lake Backflow Prevention Structure | High | Satisfactory | 22 | Recreation | 2007 |
| Harbor Hill North Pond | High | Satisfactory | 21 | Flood Risk Reduction | 2014 |
| Tapps Lake Dike No 8 | High | Satisfactory | 20 | Recreation | 1911 |
| Tapps Lake Dike No10 | High | Satisfactory | 18 | Recreation | 1911 |
| Tapps Lake Dike No 1 | High | Satisfactory | 18 | Recreation | 1911 |
| Tapps Lake Dike No 9 | High | Satisfactory | 15 | Recreation | 1911 |
| Tapps Lake Dike No 2b | High | Satisfactory | 15 | Recreation | 1911 |
| Tapps Lake Dike No 3 | High | Satisfactory | 15 | Recreation | 1911 |
| Latitude 47 Commerce Center Stormwater Pond | High | Fair | 15 | Flood Risk Reduction | 2020 |
| Frozen Lake Dam | High | Not Available | 14 | Water Supply | 1930 |
| Tapps Lake Dike No 12 | High | Satisfactory | 14 | Recreation | 1911 |
| Lakeland South Pond No 1 | High | Fair | 13 | Flood Risk Reduction | 2003 |
| Leach Creek Stormwater Detention Dam | High | Fair | 13 | Flood Risk Reduction | 1960 |
| North Fork Clover Creek E1 Det Basin | High | Fair | 10 | Flood Risk Reduction | 2000 |
| North Fork Clover Creek W1 Det Facil | High | Fair | 10 | Flood Risk Reduction | 2001 |
| Tapps Lake Dike No 2a | High | Satisfactory | 9 | Recreation | 1911 |
| Bonney Lake Wsu Infiltration Pond | High | Satisfactory | 9 | Flood Risk Reduction | 2018 |
| Tapps Lake Dike No 13 | High | Satisfactory | 5 | Recreation | 1911 |
| Butterworth Dam | Significant | Poor | 60 | Irrigation | 1949 |
| Sylvia Lake Dam Pierce Co | Significant | Fair | 16 | Recreation | 1963 |
| Slavic Lake Dam | Significant | Poor | 13 | Recreation | 1990 |
| Tapps Lake Dike No 14 | Low | Satisfactory | 256 | Recreation | 1911 |
| Eden Creek Dam | Low | 40 | Water Supply | 1937 | |
| Tapps Lake Dike No 15 | Low | Satisfactory | 27 | Recreation | 1911 |
| Chambers Creek Reservoir Dam | Low | 22 | Water Supply | 1970 | |
| Whiteman Cove Dam | Low | 15 | Recreation | 1950 | |
| Lake Minterwood Dam | Low | 14 | Recreation | 1967 | |
| Serene Lake | Low | 9 | Recreation | 1971 | |
| Chambers Lake | Low | Not Available | 7 | Other | 1967 |