Seattle Port Lagoon No 3
Washington — King County — Des Moines Creek - Offstream
Location
| State | Washington |
| County | King |
| River | Des Moines Creek - Offstream |
| Coordinates | 47.43254, -122.31332 |
Physical Characteristics
| NID Height | 32 ft |
| Dam Height | — |
| Dam Length | 1,500 ft |
| NID Storage | 256 acre-ft |
| Max Storage | 256 acre-ft |
| Surface Area | 1 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | May 3, 2022 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 2001 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | Port of Seattle |
| Other Name | Port of Seattle - Lagoon #3 Expansion |
Location Map
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.