Ladera Park Stormwater Improvements Project

Ladera Park


Water Quality

• Underground Infiltration System
• Bioswales
• Low Impact Development

Water Supply

• Using stormwater and non-stormwater runoff to irrigate the landscape at Ladera Park


• Demonstration Garden with native and drought tolerant plants
• Educational signage

Project features include new drainage infrastructure to capture and treat stormwater. More than half a million gallons of stormwater will be converted annually to irrigate the park and infiltrate approximately 25 million gallons into underground wells below Ladera Park.


LA County Logo Parks and Recreation Logo Department of Water Resources Logo Los Angeles County Flood Control District Logo

• Los Angeles County Supervisor Mark Ridley-Thomas
• County of Los Angeles Department of Parks and Recreation
• California Department of Water Resources - Proposition 84 Implementation Grant Program
• Los Angeles County Flood Control District

Final Design May 2018
Advertisement and Award December 2018
Construction Start June 2019
Construction End Winter 2020-21
Effectiveness Monitoring Winter 2020-21


January 13, 2021

Shade structure built, landscape installation continuing.

November 12, 2020

Bioswales and shade structure installation continuing.

July 28, 2020

Drywell installation has been completed. Above-ground construction has begun.

July 1, 2020

Drywell installation in Ladera Park Avenue under way.

June 10, 2020

Water Reuse System in place.

April 28, 2020

Drywell installation is nearing 75% completion.

March 19, 2020

Drywell Installation is ongoing.

February 10, 2020

Installation underway for RCP connecting drywells.

December 30, 2019

Splitter structure installed; slide gate installation beginning

December 3, 2019

Splitter Structure is being installed.

November 14, 2019

Pretreatment system being installed. Seven drywells have been drilled. Drywell installation is ongoing.

September 9, 2019

Dry well drilling has started in September 2019.

AUGUST 20, 2019

Construction began in June 2019. The diversion structure is being installed on Slauson Avenue and is expected to conclude by the end of August. Dry well installation is anticipated to begin in September 2019.


The construction contract was awarded to Kaveh Engineering and Construction, Inc. and executed in January 17, 2018. Construction is expected to start in late May 2019 and be completed in October 2019. Click on the links below for the project plans and specifications.
   • Project Specifications
   • Project Plans/Addendum No. 1

MARCH 15, 2018

The Addendum to the Ballona Creek Enhanced Watershed Management Program (EWMP) Program Environmental Impact Report (PEIR) was released for a 30-day public review and comment period. Click on the links below for more information:
   • Notice of Addendum to the EWMP PEIR for the proposed project
   • Draft Addendum
   • Final Addendum
   • Ballona Creek EWMP

MARCH 29, 2018

The Ladera Park Project Team will be holding a community meeting at 6 PM at the Yvonne B. Burke Community Center (4750 W. 62nd St., Los Angeles, CA 90056). Click below for Flyer.
   • View Flyer
   • PowerPoint presentation


• To receive project updates, please contact Michael De Leon at (626) 300-3290 or