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Los Angeles County

Los Angeles River Master Plan Update

2026-05-25T14:09:09-06:00September 28th, 2018|

The Los Angeles River (LA River) is one of Los Angeles County, California's most valuable assets, providing flood risk management for millions of County residents. Since floods in the early 20th century cost dozens of lives and hundreds of millions of dollars in property damage, efforts have primarily focused on using the LA River for flood control. In 1996, the county developed its first LA River Master Plan (LARMP) with the goal of identifying ways to revitalize the river and create community resources through aesthetic enhancement, recreational opportunities, flood control, and environmental values.

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