Live Oak Reservoir
Live Oak Reservoir is an earth dam located in Los Angeles County, California, built in 1975. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Live Oak Reservoir
The primary purpose of Live Oak Reservoir is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Metropolitan Water District Of Southern California (public utility). It impounds the Tr Marshall Cr near La Verne.
The dam stands 105 feet tall and stretches 3,000 feet across, creates a reservoir covering 77 acres, has a maximum storage capacity of 2,500 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 02/27/2025.
At 105 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The California dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Los Angeles |
| Nearest City | La Verne |
| River/Stream | Tr Marshall Cr |
| Coordinates | 34.13950, -117.75420 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 105 ft |
| Dam Height | 105 ft |
| Dam Length | 3,000 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 2,500 acre-ft |
| Max Storage | 2,500 acre-ft |
| Surface Area | 77 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Metropolitan Water District Of Southern California |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/27/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01084 |
| Federal ID | CA01084 |
| More Info | State Dam Safety Program |