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Central California
Release Date: 08/08/11
Contacts: David Christy , 916-941-3146  
News Release No. CA-CC-11-77

Invasive Weed Control Project Planned for Cache Creek

The East Lake and Yolo County resource conservation districts, in cooperation with the Bureau of Land Management’s Ukiah Field Office, other agencies, organizations and private land owners, will do work in mid-August to control an invasive weed on Cache Creek.

“On or around August 15, contractors working with the East Lake Resource Conservation District will begin spraying ravenna grass, an invasive weed, on Cache Creek from a quarter mile below the Clear Lake Dam to the Yolo County line,” said Pardee Bardwell, BLM Cache Creek Natural Area manager.

White Water Rafting and the Back Country Horsemen will help move materials around in the Cache Creek Wilderness Area. The ravenna grass will be sprayed with AquaMaster, a herbicide similar to Round-Up. AquaMaster may be used in all bodies of water including streams and rivers. No aerial spraying will be done and no spraying will be done on weekends.

“The purpose of this project is to remove ravenna grass, similar to pampas grass, from the target areas before they become a serious threat to the aquatic habitat of Cache Creek, including the north fork and the Yolo County portion,” Bardwell said. Ravenna grass, a non-native invasive weed, occurs in about 225 sites along upper Cache Creek and has spread downstream into Yolo County.

Field observations indicate that ravenna grass is having a pronounced effect on the Cache Creek native plant ecosystem. Large stands of these large plants are altering successional processes and riparian community structure.  Individual plants produce thousands of seeds that disperse by both wind and water and the plants are moving downstream into Yolo County.

The eradication project is one of several in the Cache Creek watershed. Due to seed dispersal, plant monitoring and eradication is not limited by ownership boundaries. Federal, state and local agencies; conservation and environmental organizations; and private landowners are cooperating in this large-scale project to remove non-native invasive weed species from the entire watershed including ravenna grass, tamarisk and arundo, Bardwell said.

Eradication of additional plants located on intervening private lands within the project area will be coordinated with the resource conservation districts in Lake, Yolo and Colusa counties and will complement BLM’s efforts.

For more information, contact Bardwell at (707) 468-4055.


Central California   2800 Cottage Way, Sacramento, CA 95825  

Last updated: 08-08-2011