Upper Blue Lake
California — Alpine County — Blue Creek
Location
| State | California |
| County | Alpine |
| River | Blue Creek |
| Coordinates | 38.62813, -119.94060 |
Physical Characteristics
| NID Height | 31 ft |
| Dam Height | 21 ft |
| Dam Length | 786 ft |
| NID Storage | 7,300 acre-ft |
| Max Storage | 7,300 acre-ft |
| Surface Area | 333 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | August 19, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1901 |
| 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.