Twin Lake
California — Alpine County — North Fork Mokelumne River-tr
Location
| State | California |
| County | Alpine |
| River | North Fork Mokelumne River-tr |
| Coordinates | 38.60890, -119.94452 |
Physical Characteristics
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,520 ft |
| NID Storage | 21,581 acre-ft |
| Max Storage | 21,581 acre-ft |
| Surface Area | 600 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | September 7, 2022 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1903 |
| Primary Purpose | Hydroelectric |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Pacific Gas and Electric Company |
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.