NOTICE OF 2025 PEND OREILLE LAKE, IDAHO
EURASIAN WATERMILFOIL TREATMENT
Dear property owners and lake users,
Eurasian watermilfoil has been identified as a significant invasive species within the Pend Oreille Lake system of Idaho and is known to negatively affect the beneficial uses of a waterbody. As such, an aquatic herbicide treatment is planned for specific areas of Pend Oreille Lake between August 25 -27, 2025, based on water and weather conditions. The treatment timing was selected to maximize treatment efficacy when Eurasian watermilfoil is actively growing. Specific areas of the lake will be treated with liquid florpyrauxifen-benzyl (ProcellaCOR EC, USEPA Registration # 67690-80). This notice is being provided for Eurasian watermilfoil treatment locations within 1/4 mile of management areas.
The following water use restrictions will apply:
- Irrigation Use of Water: Do not irrigate established food crops until water use restrictions are lifted. Do not irrigate other non-food crops, such as landscape ornamentals, until water use restrictions are lifted. There is no restriction for turf irrigation.
- Recreational Use of Water in Treatment Areas: There are no swimming or fishing restrictions within the treatment areas.
- Potable Water in Treatment Area: There are no restrictions on consumption of treated water for potable use or by pets or other animals within the treatment area.
For up to date information on water use restrictions, treatment date and treatment locations, please visit the Idaho State Department of Agriculture's and the applicator's websites:
Please contact Tom Moorhouse, Aquatic Pest Control Adviser with Clean Lakes, Inc., (208-929-2757) or the Idaho State Department of Agriculture (208-332-8667), with any questions.
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