Big Canyon
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Orange |
| River/Stream | Tr Big Canyon Cr |
| Coordinates | 33.61210, -117.85540 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 65 ft |
| Dam Height | 65 ft |
| Dam Length | 3,824 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 600 acre-ft |
| Max Storage | 600 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Newport Beach |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/02/2025 |
| Emergency Action Plan | Yes |