Santiago Creek
High HazardPoor ConditionEmergency Action Plan: Yes
Location
| County | Orange |
| Nearest City | Orange |
| River/Stream | Santiago Creek |
| Coordinates | 33.78630, -117.72260 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 136 ft |
| Dam Height | 136 ft |
| Dam Length | 1,425 ft |
| Year Completed | 1933 (93 years old) |
Storage & Hydraulics
| NID Storage | 25,000 acre-ft |
| Max Storage | 25,000 acre-ft |
| Surface Area | 650 acres |
| Drainage Area | 63 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Irvine Ranch Water District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 05/06/2025 |
| Emergency Action Plan | Yes |