Big Creek
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Tuolumne |
| Nearest City | Groveland |
| River/Stream | Big Creek |
| Coordinates | 37.85760, -120.20100 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 120 ft |
| Dam Height | 120 ft |
| Dam Length | 480 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 7,650 acre-ft |
| Max Storage | 7,650 acre-ft |
| Surface Area | 200 acres |
| Drainage Area | 25 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Pine Mountain Lake Association |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/21/2025 |
| Emergency Action Plan | Yes |