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Hydrilla Treatment Continuing this Summer on Cayuga Lake


The push to eradicate hydrilla from Cayuga Lake is continuing this summer.

The US Army Corps of Engineers, in collaboration with the New York State Department of Environmental Conservation, plans to apply aquatic herbicides in the area of Wells College Bay.

Beginning the week of June 24, seven fluridone treatments will occur between June and August. One potential chelated copper treatment may also occur in August.

The Corps of Engineers will post signs at public access points along the lake when the herbicides are applied.

The Cayuga County Health Department will conduct water quality monitoring for drinking water and the public bathing beach during the treatment period. Sampling results will be published on the department’s website when they become available.

The department adds that, due to the levels of fluridone being used, there will be no restrictions on drinking, fishing, swimming, boating, or domestic use of treated water; however, water containing the herbicide should not be for sensitive greenhouse and nursery plants, newly seeded lawns, ad some vegetables.

Hydrilla is an invasive plant native to Korea. It is highly aggressive with long stems which can grow up to an inch a day and 30ft.

Typically found in shallow waters, the plants form dense mats that block sunlight for native plants and can lead to fish kills by decreasing dissolved oxygen levels in the water.

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