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
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Document Description
The goal of the WHCP is to keep waterways safe and navigable by controlling the growth and the spread of water hyacinth in the delta and surrounding tributaries. The primary treatment method for the WHCP is chemical, although the program has utilized some mechanical controls (primarily hand-picking), and has also researched biological controls. Cal Boating has six (6) crews conducting WHCP treatments (plus one Fresno County crew, and one Merced County crew). Treatments begin 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. Cal Boating has divided the WHCP into 369 treatment sites that average between one and two miles in length. Sites may be treated multiple times during a treatment season. Treatment sites are prioritized so that nursery areas, and areas with public, agricultural, or industrial impacts are treated first.

Contact Information

Marcia Carlock
Agency Name
California Department of Boating and Waterways
Contact Types
Lead/Public Agency


Alameda, Contra Costa, Fresno, Madera, Merced, Sacramento
Cross Streets
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 Conservation (DOC), California Department of Fish and Wildlife, Habitat Conservation Planning (CDFW), California Department of Health Care Services (DHCS), California Department of Parks and Recreation, California Department of Transportation, Division of Transportation Planning (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Public Utilities Commission (CPUC), California State Lands Commission (SLC), Central Valley Flood Protection Board, Delta Protection Commission, Department of Toxic Substances Control, Department of Water Resources, Resources Agency, State Water Resources Control Board, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights
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, Land Use/Planning, Vegetation, Wetland/Riparian, Wildlife

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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