The Council for Watershed Health is implementing a project to remove Arundo donax, an invasive species severely impacting California’s waterways and biodiversity. Focused on the Los Angeles River basin, with targeted removal in Porter Ranch and Sepulveda Basin, the project will reduce excess evapotranspiration of water and mitigate downstream ecological damage. Removal methods include biomass removal and targeted herbicide application, followed by monitoring and passive revegetation to support native species recovery. This effort aligns with California’s 30×30 Conservation Plan and LA County’s Integrated Water Resources Management goals to enhance riparian habitats and protect threatened species.