Water Hyacinth and Spongeplant Control Treatments for July 25 Through July 29, 2016


CA State Parks, Division of Boating and Waterways
Water Hyacinth and Spongeplant
Treatments for July 25 thru July 29, 2016

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“Treatment sites and schedules are subject to change based on regulatory requirements, weather conditions, plant growth and movement, waterway traffic, listed fish presence surveys, and other conditions.”
  • Spraying will be conducted during the hours of 7am to 4pm weekly, Monday thru Friday.  
  • Herbicide applications during the treatment period will utilize Glyphosate (Roundup Custom), Imazamox (Clearcast) and 2,4-D (Weedar 64)

Treatment Period:


Area 2-4: Mar. 10, 2016 – Nov. 30, 2016

Area 1: June 1, 2016 – Nov. 30, 2016

County References:
ALA – Alameda; CC – Contra Costa;
MER – Merced; SAC – Sacramento; SJ – San Joaquin;
STAN – Stanislaus; SOL – Solano; YOLO – Yolo

Since March 10, 2016, approximately 1,336* acres of water hyacinth and/or spongeplant have been treated at 141 sites with 372 total treatments.
* Data are preliminary and
    subject to change. 


Southern Treatment Site Map 

 Fish Passage Protocol


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