SFWMD, FWC re-schedule hydrilla treatment on Cypress Lake
Thursday, April 07, 2011
Media contact: Bill Graf (SFWMD), 407-858-6100, ext. 3837
UPDATE: Due to recent rains, the Lake Cypress
hydrilla treatments scheduled for this week have been rescheduled
for the week beginning April 11. Specifically, Aquathol K will be
applied to the 600-acre block on Thursday, April 14, unless water
flows have not abated by that time. Also, applications of
Clipper and Clearcast to the smaller demonstration plots will occur
that same week, although a specific date has not yet been
Because of the recent heavy rains, water is being released
through the S-61 water control structure on Lake Toho and moving
through Lake Cypress at a higher rate than earlier
predicted. As a result, if hydrilla treatments proceeded as
originally scheduled, they would likely not be as successful as
The South Florida Water Management District (SFWMD) and the
Florida Fish and Wildlife Conservation Commission (FWC) will treat
hydrilla on about 600 acres of Cypress Lake. The invasive plant can
clog waterways, impede navigation and affect wildlife.
Working in cooperation with the FWC Invasive Plant Management
Section, the SFWMD Vegetation Management Division will apply the
herbicide Aquathol, which is approved for lake use by the U.S.
Environmental Protection Agency.
Areas to be treated were carefully selected to improve fish and
wildlife habitat, as well as improve navigation and flood control
on the lake.
Since hydrilla was first introduced from Asia as an ornamental
aquarium plant in the 1950s, the rapidly growing aquatic plant has
invaded almost 80 percent of Florida's freshwater ponds, rivers and
waterways. The plant can grow in underwater stands or surface mats
and is easily transferred to other water bodies by boats.
Hydrilla slows water flow, can be detrimental to fish and
wildlife habitat and limit access to waterways by clogging boat
The SFWMD Vegetation Management Division is responsible for
managing nuisance and invasive exotic vegetation throughout the
16-county District. The implementation of a vegetation management
program is necessary to ensure the continued use and function of
the region's water resources and preservation of South Florida's
For more information on the District's vegetation management
efforts, please visit the District's website at www.sfwmd.gov.