Alder
Washington — Pierce County
Location
| State | Washington |
| County | Pierce |
| Coordinates | 46.80104, -122.31016 |
Physical Characteristics
| NID Height | 330 ft |
| Dam Height | 285 ft |
| Dam Length | 1,487 ft |
| NID Storage | 241,195 acre-ft |
| Max Storage | 241,195 acre-ft |
| Surface Area | 3,065 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1945 |
| Primary Purpose | Hydroelectric |
| Dam Type | — |
| Owner Type | — |
| Owner | City of Tacoma |
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.