Tolt River - South Fork
Washington, King County, South Fork Tolt River
Location
| State | Washington |
| County | King |
| River | South Fork Tolt River |
| Coordinates | 47.69300, -121.68870 |
Physical Characteristics
| NID Height | 200 ft |
| Dam Height | 200 ft |
| Dam Length | 980 ft |
| NID Storage | 68,400 acre-ft |
| Max Storage | 68,400 acre-ft |
| Surface Area | 1,040 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | Yes |
| Last Inspection | September 28, 2022 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1962 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | City of Seattle |
| Other Name | Tolt Main Dam |
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.