Copperopolis
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Calaveras |
| Nearest City | Copperopolis |
| River/Stream | Penney Creek |
| Coordinates | 37.98310, -120.64950 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 600 ft |
| Year Completed | 1905 (121 years old) |
Storage & Hydraulics
| NID Storage | 225 acre-ft |
| Max Storage | 225 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | William (Huei) and Tina Chang |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/16/2025 |
| Emergency Action Plan | Yes |