Karen M. Jetter and Kjersti Nes

from ARE Update Vol. 21, No. 3, Jan/Feb, 2018View Full Article PDF   https://s.giannini.ucop.edu/uploads/giannini_public/55/2a/552a7310-8134-48d9-b4cf-601aa3364f8e/v21n3_3.pdf 


Invasive aquatic weeds have become an increasing problem in the California Bay-Delta, with Brazilian waterweed and water hyacinth being particular problems. In 2014 and 2015, large mats of water hyacinth began to choke Delta waterways, increasing control costs of a variety of public agencies and marinas. Between 2013 and 2016, these groups spent about $46 million to manage all invasive aquatic weeds.