Project Description

The County is replacing the concrete flood control channel between Laguna Canyon Road and the Frontage Road that failed during a rainstorm in 2019. Construction began in September 2022 and is expected to be completed in June 2023.

The scope of work includes removing and replacing approximately 1,200 linear feet of the rectangular concrete channel in-kind, reconfiguring pedestrian crossings to improve pedestrian safety and circulation, replacing hardscape and landscaping, and removing existing trees adjacent to the project limits that pose a risk to the Channel. Planning Commission Design Review and a Coastal Development Permit were approved for the replacement of a public utility structure located in the Arts District of the Downtown Specific Plan area.

This replacement project is to maintain the current flood protection and the original geometry will be maintained. Any channel enhancements or modifications are not feasible at this time as the channel is under sized. To upgrade this channel and convey 100-year flows, a secondary storm drain system is needed under Laguna Canyon Road in the future. At that time, studies can be completed to explore enhancement options to the existing channel. This project will involve relocating several below and aboveground utilities which will be more accessible after project completion.

See link below for the latest construction updates.

https://ocip.ocpublicworks.com/lcc