Nogales Park Stormwater Capture Project

Nogales Park Rendering


Water Quality

• Catch basins to capture stormwater from a 27-acre community area
• Underground Infiltration System
• Low Impact Development


• Drought tolerant plants
• Walking paths and benches
• Fitness stations
• Shade shelter
• Public restrooms
• Playground areas
• Splash pad
• Picnic areas
• Open lawn area

The Project site is located on undeveloped land at 2603 Grand Avenue in the unincorporated community of Walnut Park. The development project includes construction of a new 0.5-acre park with a staff office and public restroom building, playground areas, splash pad, an open lawn area, and additional park amenities. The building is designed to provide a base of operations for Department of Parks and Recreation and Sheriff’s Department Parks Bureau personnel to ensure safe and accessible recreation programming to the local community.

The stormwater capture elements include a diversion system and infiltration dry wells to divert and capture both urban and stormwater runoff. The Nogales Park Stormwater Capture Project will reduce bacteria and metal pollutants from entering the Los Angeles River through the capture of stormwater and urban runoff from a 27-acre drainage area.


Project Activity Completion Date
Complete Design Plans November 2021
Advertise and Award July 2022
Construction Start Fall 2022
Construction Complete Early 2024


LA County Logo Parks and Recreation Logo Los Angeles County Flood Control District Logo

• Los Angeles County Supervisor Janice Hahn
• County of Los Angeles Department of Parks and Recreation
• Safe Clean Water Program

Project Plans, Specifications and Reports: Walnut Park Site Plan Updates

February 2022

  • Public Input is requested for the Draft Addendum to the Program Environmental Impact Report (PEIR).

    The 30-day public comment period closes on April 1, 2022. Send any comments by email to Matthew Feldhaus at or by mail to:

    Los Angeles County Public Works
    900 South Fremont Ave., 5th Floor
    Alhambra, CA 91803
    Attn: Matthew Feldhaus


To receive project updates, please contact Ryan Kristan at 626-300-3271 or