Curlyleaf Pondweed Treatments 5/20/26

On May 20, 2026, aquatic invasive species management activities were conducted on the Sauk River Chain of Lakes targeting Curlyleaf Pondweed (CLP), an invasive aquatic plant known to impact native plant communities, recreation, and overall lake health.

Approximately 115 acres of permitted management areas were treated across Cedar Island, Zumwalde, Krays, and Knaus Lakes. Applications of Flumigard® SC (flumioxazin) were performed by Minnesota-licensed aquatic pesticide applicators from AquaTerra Solutions and PLM Lake & Land Management in accordance with Minnesota DNR permit requirements, product label directions, and all applicable state regulations.

Weather and water conditions on the treatment day were favorable for application, supporting effective product distribution within the targeted management areas. These treatments are part of the Sauk River Chain of Lakes Association's ongoing efforts to manage aquatic invasive species, protect recreational use, and support the long-term ecological health of the chain. For detailed maps of each lake treated click here.