Lyons
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | California |
| County | Tuolumne |
| Nearest City | Long Barn |
| River/Stream | South Fork Stanislaus River |
| Coordinates | 38.09410, -120.16740 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 132 ft |
| Dam Height | 132 ft |
| Dam Length | 535 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 6,228 acre-ft |
| Max Storage | 6,228 acre-ft |
| Normal Storage | 6,228 acre-ft |
| Surface Area | 184 acres |
| Drainage Area | 66 sq mi |
| Max Discharge | 21,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Pacific Gas and Electric Company |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/08/2022 |
| Emergency Action Plan | Yes |