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Curl -Leaf Pondweed Summar ~?~~ <br />y v ~ ~3 ~~ <br />~~~~f~~~<~t~c~~ <br />• A team consisting of the Sherburne County Soil and Water Conservation District, City of <br />Elk River Environmental staff and the Lake Orono Improvement Association has <br />concluded that the best Curly-Leaf Pondweed control resolution is a managed lake draw down in <br />the fall to allow a hard freeze kill of this invasive weed. <br />• The water elevation adjustments would be done during the timeframe of mid- to late October in a <br />gradual manner when average daytime temperatures are still 50 - 55 degrees Fahrenheit. The <br />water level is lowered enough to expose the Curly-Leaf Pondweed. The water level would remain <br />down until a hard freeze occurs. <br />• This technique will allow us to achieve the environmental objective of Invasive Curly-Leaf <br />Pondweed reduction while accounting for desired species survival, most notably, the threatened <br />Blanding Turtles. <br />