Los Angeles River Master Plan: Program Environmental Impact Report

Los Angeles River

Los Angeles County has prepared the LA River Master Plan, a comprehensive approach covering all 51 miles of the LA River. The effort was launched to update the original 1996 Master Plan, synthesizing more recent ideas for portions of the River and bringing a comprehensive vision to the transformation of the LA River. For information on the LA River Master Plan, please visit www.larivermasterplan.org.

As part of this effort, the County of Los Angeles, through the Department of Public Works, is the Lead Agency and has prepared a Program Environmental Impact Report (PEIR) to evaluate any potential impacts to the environment pursuant to the California Environmental Quality Act.

On June 14, 2022, the County of Los Angeles Board of Supervisors approved the LA River Master Plan and certified the PEIR on behalf of the County and the Los Angeles County Flood Control District.



  • Notice of Availability for Final PEIR - English | En español
  • Notice of Availability for Draft PEIR - English | En español
  • Recording of March 3, 2021 Draft PEIR Public Meeting - English
  • Draft PEIR Public Meeting presentation - English | En español
  • Updated FAQs - English | En español
  • Definitions from State CEQA Guidelines - English | En español
  • Notice of Preparation - English | En español
  • Fact Sheet - English | En español
  • Scoping Meeting Presentation - English | En español
  • Recording of June 29, 2020 Scoping Meeting Presentation - English
  • Scoping Meeting Frequently-Asked-Questions (FAQs) - English | En español


    For any questions about the 2020 LA River Master Plan CEQA process, please contact Grace Komjakraphan-Tek at LARiverCEQA@pw.lacounty.gov or at (833) 993-1739 or (626) 458-4330.