San Gabriel River Watershed Arundo donax Implementation Program

Arundo donax (giant reed) a highly invasive riparian plant has been designated as one of the top 100 Worst Invasive Species of the World by the Invasive Species Specialist Group of the World Conservation Union (IUCN). Arundo is found infesting waterways throughout much of coastal and central CA from the Mexico border to as far north as southern Humboldt County.

Arundo has significant negative impacts on water availability, water quality (i.e. sediment loads, temperature, pathogens, nutrient loading, flow modification), habitat, fires, and infrastructure and transpires water at a rate that is 5x higher than native vegetation.

The Arundo Eradication Program will plan for, permit, and initiate the removal of ~48-60 acres of Arundo donax from the San Gabriel River (SGR) Watershed. Targeting Arundo populations strategically from the top of the watershed down will eliminate future opportunities for reestablishment and expansion.


* Project supports urban water use efficiency AND raises public awareness of water issues and/or provides community benefits



Start Up Date:


Project Benefits:

Community Engagement & Education

Wildlife & Habitat Protection

Project Type:

Public Awareness and Water Efficiency *


Fully Funded