Ler Van Norman Bypass
Ler Van Norman Bypass is an earth dam located in Los Angeles County, California, built in 1970. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Ler Van Norman Bypass
Ler Van Norman Bypass is a dam in Los Angeles, California. The dam is owned by City Of Los Angeles Department Of Water And Power (local government). It impounds the Offstream.
The dam stands 78 feet tall and stretches 600 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, 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 11/03/2025.
At 78 feet, this dam is taller than 97% of all dams in the United States.
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Location
| State | California |
| County | Los Angeles |
| River/Stream | Offstream |
| Coordinates | 34.29120, -118.48500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 78 ft |
| Dam Height | 78 ft |
| Dam Length | 600 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 240 acre-ft |
| Max Storage | 240 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | City of Los Angeles Department of Water and Power |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/03/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00101 |
| Federal ID | CA00101 |
| More Info | State Dam Safety Program |