Delta Region Areawide Aquatic Weed Project
Delta Region Areawide Aquatic Weed Project
Delta Region Areawide Aquatic Weed Project
University of California
Delta Region Areawide Aquatic Weed Project


The California Sacramento-San Joaquin River Delta hosts many unique ecosystems and forms the hub of California’s water supply. The invasion of aquatic weeds threatens ecosystems, impedes restoration efforts, and is economically and sociologically detrimental to the Delta.

NASA Ames Research Center
California Dept of Parks & Recreation - Division of Boating & Waterways
California Dept of Food & Agriculture
Sacramento-San Joaquin Delta Conservancy
University of California, Davis
Local mosquito vector control districts
General areas of study
Weed mapping tools
Management techniques and strategies
Weed effects on ecosystems, native plants, and water quality
Biological control agents
Effects of weeds on mosquito populations


UC Weed Science blog

Figure 1. Example of a water hyacinth daughter plant growing from a stolon. Water temperature effect on waterhyacinth regrowth
Posted 11/27/2017 - Waterhyacinth (Eichhornia crassipes) is a floating perennial species that has become a serious management issue as it invades aquatic ecosystems around the world. In the Sacramento-San Joaquin Delta in California, the species forms large, dense mats on...

California Aqueduct, San Joaquin Valley (photo by David McNew/Getty Images) How aquatic weeds affect costs to the U.S. Bureau of Reclamation
Posted 8/7/2017 - The U.S. Bureau of Reclamation (BOR) is one of the agencies responsible for operating a facility that pumps water from the Sacramento-San Joaquin Delta into the California Aqueduct. The California Aqueduct pumps water for uses south of the facilities....

Delta smelt (source: Feeding frenzy? Testing the ability of endangered and threatened fish species in the Delta to feed on waterhyacinth biocontrol agents
Posted 7/27/2017 - Biological control of water hyacinth in the Delta is being developed as part of an integrated, adaptive management plan for sustainable, long-term control of water hyacinth. Water hyacinth is one of the most troublesome floating aquatic weeds in the...


DRAAWP Technical Update Meeting. Delta Region Areawide Aquatic Weed Program project leaders will meet December 4, 2017, 9 to noon, in PES 2005 (UC Davis).

DRAAWP Symposium at Western Aquatic Plant Management Society annual meeting. WAPMS is hosting a DRAAWP session at the Reno conference (March 26-28, 2018, Reno NV).

Weed Research & Information Center - Aquatic Weed School. We are already starting to organize the 2018 Aquatic Weed School, so save the date:  September 5-6, 2018 in Davis, California.  Watch the website

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Website hosted by UC Weed Research & Information Center


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