Headworks Reservoir West is an other dam located in Los Angeles County, California, built in 2022. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 2,384 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Headworks Reservoir West
The primary purpose of Headworks Reservoir West 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 Los Angeles Department of Water and Power (local government). It impounds the Offstream.
The dam stands 32 feet tall and stretches 2,384 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 227 acre-feet. Completed in 2022, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/19/2025.
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Location
| State | California |
| County | Los Angeles |
| River/Stream | Offstream |
| Coordinates | 34.15333, -118.31578 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 2,384 ft |
| Year Completed | 2022 (4 years old) |
Storage & Hydraulics
| NID Storage | 227 acre-ft |
| Max Storage | 227 acre-ft |
| Surface Area | 7 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Los Angeles Department of Water and Power |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/19/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01598 |
| Federal ID | CA01598 |
| More Info | State Dam Safety Program |