Lyons
California — Tuolumne County — South Fork Stanislaus River
Location
| State | California |
| County | Tuolumne |
| River | South Fork Stanislaus River |
| Coordinates | 38.09410, -120.16740 |
Physical Characteristics
| NID Height | 132 ft |
| Dam Height | 132 ft |
| Dam Length | 535 ft |
| NID Storage | 6,228 acre-ft |
| Max Storage | 6,228 acre-ft |
| Surface Area | 184 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | July 8, 2022 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1930 |
| Primary Purpose | Hydroelectric |
| Dam Type | Concrete |
| 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.