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Arundo Removal at Suisun Creek

Salmonid Passage Barrier Removal on Wooden Valley Creek

Restoration and Monitoring of White Creek

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Arundo Removal and Revegetation of Suisun Creek

Giant Reed, or Arundo donax, is an especially destructive invasive plant that grows in riparian corridors throughout California.   It grows quickly, outcompeting native plant species and creating dense thickets of woody vegetation that provide little to no benefit for fish and wildlife species.  It also has a high water demand, draining the creek of its limited water resources.  Arundo has a substantial presence along Suisun Creek, covering more than 11 acres in the riparian corridor.  Since 2004, CLSI has worked with landowners to remove Arundo from Suisun Creek and increase native canopy cover. 

The Arundo removal and native plant revegetation effort began with the support of a CALFED grant, which funded an extensive mapping project that identified and mapped all patches of Arundo along Suisun Creek.  The mapping project found approximately 11.4 acres of Arundo along 13.6 miles of Suisun Creek.  After mapping was complete, CLSI, with support from CALFED, the State Coastal Conservancy, and Caltrans Environmental Enhancement and Mitigation program, began removal of the Arundo.  CLSI continues to work with landowners along the creek and with its partner, Shelterbelt Builders, to monitor and remove any new re-growth of Arundo along the creek. 

After the 2-3 years of treatment of Arundo and monitoringat a project site, CLSI works with its project partners to determine if revegetation is necessary to promote stream health.  If it is, revegetation of the site is completed using native species including willow, oaks, buckeye, maple, alder, and Oregon ash.  At the end of 2013, over 600 native plants had been installed at Arundo removal sites along the first 6.8 miles of Suisun Creek.

Large stands of Arundo like those seen below

could be found throughout the Suisun Creek riparian corridor.



Arundo removal began with herbicide application. In some cases,

the large stands of biomass were removed after the plant died. 

arundo removal


Following the first treatment, the project sites were monitored

for regrowth and sprayed again if it occurred.

regrowth monitoring 


Following successful Arundo removal, native plants were installed at project sites

to increase canopy cover over the stream and create a healthy riparian ecosystem. 









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