Big Tujunga No. 1
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Los Angeles |
| Nearest City | Tujunga |
| River/Stream | Big Tujunga Cr |
| Coordinates | 34.29470, -118.18850 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 220 ft |
| Dam Height | 220 ft |
| Dam Length | 505 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 5,750 acre-ft |
| Max Storage | 5,750 acre-ft |
| Surface Area | 83 acres |
| Drainage Area | 81 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Los Angeles County Department Of Public Works |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/21/2025 |
| Emergency Action Plan | Yes |