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

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...

Figure 1. An Egeria flower in an experimental tank. Photo: Maribel Portilla. Aquatic weed may reduce survival of mosquito larvae
Posted 6/9/2017 - Mosquito research by Maribel Portilla and Sharon Lawler recently included an experiment on how Egeria, or Brazilian water weed, affects mosquito populations. Egeria is a submersed aquatic weed that can cause problems in channels and irrigation waterways....


Abstracts are due soon for the State of the San Francisco Estuary Conference.

Mark your calendars for a one-day science symposium on Invasive Species at UC Davis on August 29 co-sponsored by the Delta Interagency Invasive Species Coordination (DIISC) Team, the Delta Stewardship Council’s Delta Science Program, and UC Davis. Please see the announcement for details.

Dr. Lars Anderson will be teaching "Biology and Management of Invasive Aquatic Plants" at UC Davis in fall quarter 2017. This will be a new course (?), Plant Sciences 178.

Funding provided by:
Website hosted by UC Weed Research & Information Center


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