Spraying for water hyacinth in the Delta will start on Thursday with the use of more more boats, manpower and other resources.
New motors for six boats, and four new boats will be added later in the year along with a mechanical harvester.
Gloria Sandoval with the department says the most heavily infested areas will be sprayed first.
"Most importantly it's going to be in the Stockton waterfront and Port of Stockton, as well,” she says. “Those are areas that have been repeatedly, year after year, been affected by the water hyacinth so we definitely want to target those areas."