Reservoir No. 4
Reservoir No. 4 is an other dam located in Los Angeles County, California, built in 1955. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Reservoir No. 4
The primary purpose of Reservoir No. 4 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 City Of Burbank (local government). It impounds the Offstream near Burbank.
The dam stands 38 feet tall and stretches 210 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 34 acre-feet. Completed in 1955, 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 05/29/2025.
At 38 feet, this dam is taller than 85% of dams nationwide.
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 | Burbank |
| River/Stream | Offstream |
| Coordinates | 34.19430, -118.29840 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 210 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 34 acre-ft |
| Max Storage | 34 acre-ft |
| Surface Area | 1 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Burbank |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/29/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00059 |
| Federal ID | CA00059 |
| More Info | State Dam Safety Program |