Los Angeles County Supervisors Approve $16M Emergency Flood Channel Hardening in Antelope Valley

LOS ANGELES, CA — The Los Angeles County Board of Supervisors approved a $16.2 million capital allocation on Tuesday for the Department of Public Works to execute critical emergency flood channel hardening and sediment removal across the Antelope Valley watershed.

Flood Mitigation Infrastructure and Engineering Scope

The funding targets 14 miles of earthen flood control channels in northern Palmdale, Lancaster, and unincorporated desert communities that sustained severe erosion during intense atmospheric river storm events earlier this year.

The capital project constructs articulated concrete block linings, reinforces bridge abutments, installs high-capacity debris basins, and expands telemetry-linked stormwater monitoring stations to provide early warnings to county emergency management operations.

Community Protection in High-Desert Corridors

Fifth District Supervisor Kathryn Barger emphasized that rapidly growing high-desert communities face severe flash flooding risks due to surrounding mountainous terrain and burn scars from prior brush fires.

The hardened channels will protect more than 6,500 residential homes, local agricultural operations, and regional aerospace manufacturing campuses from catastrophic inundation.

Project Delivery Schedule

Public Works crews will commence heavy civil excavation in September, targeting full channel reinforcement ahead of the winter precipitation season.