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Communities Around Chautauqua Lake Begin Aquatic Herbicide Treatments

The treatment begins Wednesday and will take three to six days to complete.

CHAUTAUQUA COUNTY, N.Y. — Lakeside towns and villages will begin applying herbicides to Chautauqua Lake in an effort to cut down on weed overgrowth.

The towns of Ellicott, Ellery, and North Harmony and the villages of Lakewood and Celeron received permits from the New York State Department of Environmental Conservation to use Aquathol K (endothall) and Navigate (2,4-D) to control Eurasian watermilfoil and curlyleaf pondweed.

The application begins Wednesday and will take three to six days to complete. Treatment will happen between 7 a.m. and 8 p.m.

There will be certain restrictions on water use during and after application. Signs will be posted around the lake, at public access points, and downstream to warn people. The signs will be posted as long as restrictions are in place. They are as follows:

  • Swimming: during treatment and 24 hours after
  • Irrigation: 21 days or <100 ppb of 2,4-D
  • Domestic water use: <50 ppb
  • Potable water use: <50 ppb
  • Other use restrictions: none

You can see a map of the application site and permits at the town and village halls of the municipalities applying herbicide. Office staff is also available during normal business hours to answer any questions.

For technical questions about the herbicides or treatment plan, contact Glenn Sullivan (908) 310-8775.

Click here to view the herbicide product labels.