Water Hyacinth Control Program

4 Documents in Project


SCH Number
Lead Agency
California Department of State Parks, Division of Boating and Waterways
Document Title
Water Hyacinth Control Program
Document Type
EIR - Draft EIR
Present Land Use
Document Description
The DBW has 6 crews conducting WHCP treatments (plus one Fresno County crew, and one Merced County crew). Treatments begins April 1st or April 15th in selected areas, however, the main region of the Delta can only be treated between July 1st and October 15th, to avoid potential impacts on fisheries. In 2008, approximately 84 percent of herbicide use, and 80 percent of acreage treated, utilized 2,4-D (Weedar 64). The remaining acreage was treated using the aquatic herbicide glyphosate (Rodeo Herbicide or Aquamaster). Both chemicals are used with an adjuvant surfactant, Agridex, to increase adhesion to water hyacinth leaves and reduce drift. The DBW has divided the WHCP into 368 treatment sites that average between one and 2 miles in length. Sites may be treated multiple times during a treatment season. Treatment sites are prioritzed so that nursery areas, and areas with public, agricultural, or industrial impacts are treated first. Logostical factors such wind, travel time, and weather area also taken into account when selecting treatment times and locations.

Contact Information

Terri Ely
Agency Name
California Department of Boating and Waterways
Contact Types
Lead/Public Agency


Oakley, Sacramento, Stockton, West Sacramento
Alameda, Contra Costa, Fresno, Madera, Merced, Sacramento
Cross Streets
Total Acres
50,000 water
State Highways
4, 12, 160, 220
SP/UP, Sac Northern
Delta, Sac, San Joaquin River, Tuolumne River, Merced River

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Fish and Wildlife, Habitat Conservation Planning (CDFW), California Department of Parks and Recreation, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Central Valley Flood Protection Board, Delta Protection Commission, Department of Toxic Substances Control, Department of Water Resources, Resources Agency, San Francisco Bay Conservation and Development Commission (BCDC), State Water Resources Control Board, Division of Water Quality
Development Types
Other (State Government Legislated Program)
Local Actions
Project Issues
Agriculture and Forestry Resources, Biological Resources, Cumulative Effects, Hazards & Hazardous Materials, Hydrology/Water Quality, Vegetation, Wetland/Riparian

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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