Elderberry Forebay
Elderberry Forebay is an earth dam located in Los Angeles County, California, built in 1972. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Elderberry Forebay
The primary purpose of Elderberry Forebay 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 Los Angeles, City Of (local government). It impounds the Castaic Creek.
The dam stands 200 feet tall and stretches 1,935 feet across, creates a reservoir covering 463 acres, has a maximum storage capacity of 32,500 acre-feet, and collects water from a drainage area of 75 square miles. Completed in 1972, the structure is well into its service life at over 50 years old.
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 05/08/2023.
At 200 feet, this dam is taller than 99% of all dams in the United States.
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Location
| State | California |
| County | Los Angeles |
| Nearest City | None |
| River/Stream | Castaic Creek |
| Coordinates | 34.56168, -118.63175 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 200 ft |
| Dam Height | 179 ft |
| Dam Length | 1,935 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 32,500 acre-ft |
| Max Storage | 32,500 acre-ft |
| Normal Storage | 27,700 acre-ft |
| Surface Area | 463 acres |
| Drainage Area | 75 sq mi |
| Max Discharge | 6,800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Los Angeles, City of |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/08/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CA01080 |
| Federal ID | CA01080 |
| More Info | State Dam Safety Program |