Notice: Chemical Treatment is completed

The Whitewater-Rice Lakes Management District is planning (Completed) to treat for aquatic invasive weeds to take place during the first week of June. Prior to treatment, signs will be posted along the lakes with the specifics detailing the treatment applied and any restrictions if applicable. Any irrigation from the lake should be paused for five (5) days following treatment. This treatment is not harmful to children, pets or fish.

Re: Proposed Aquatic Herbicide Application for Eurasian watermilfoil and Curlyleaf pondweed control on Whitewater and Rice Lakes.
Permit Application (click to view 2.6 Mb pdf)
Whitewater Lake Approval (0.2Mb pdf)
Rice Lake Approval (0.2Mb pdf)

The Whitewater and Rice Lakes Management District (the District) proposes to assess and chemically treat up to 175 acres on Whitewater Lake and up to 65 acres on Rice Lake to control the excessive growth of the exotic invasive aquatic plants, Eurasian Watermilfoil and Curlyleaf Pondweed.  The District proposes to conduct an application of ProcellaCOR EC (florpyrauxifen-benzyl) and Aquathol K (endothall) to be performed by Clarke Aquatic Services. We anticipate the treatment to occur sometime in spring, 2021 and will proceed only after the District obtains a permit for the treatment from the Wisconsin Department of Natural Resources.

Notification of the exact dates of treatment and water use restrictions associated with the use of ProcellaCOR EC and Aquathol K will be provided by the posting of shoreline in and adjacent to treatment areas, and public access points.

The water use restrictions associated with use of the above pesticide are noted below:

Up to 5 Day Irrigation Restriction (ProcellaCOR EC)

For additional information on the proposed treatment including a completed copy of the permit application, DNR Chemical Fact Sheets on florpyrauxifen-benzyl and endothall as well as proposed treatment map please visit :

If you do not have internet access, would like a hard copy or for additional questions about the proposed treatment, please contact:

Mike Lindenmuth, WWRLD

(630) 707-1843