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Case Studies
Water Management Associations
Sauk River Chain of Lakes Association Commits $30,000 to Fight Aquatic Invasive Weeds
The Sauk River Chain of Lakes Association commits $30,000 over a five year peiord to fight the aquatic invasive plant curly-leaf pondweed.

Curly-leaf pondweed is not native to Minnesota and can be a detriment to lakes. In spring curly-leaf pondweed can form dense mats that may interfere with boating and other recreation on lakes. Curly-leaf also can cause ecological problems because it can displace native aquatic plants. In midsummer, curly-leaf pondweed usually die back, which results in fats of dying plants piling up on shorelines, and often is followed by an increase in phosphorus and algal blooms.

Past experience in Minnesota and elsewhere has shown that eradication or elimination of curly-leaf pondweed from lakes is not a realistic goal. Problems caused by curly-leaf can be managed using available methods of control. Herbicides will be used in pilot projects, but mechanical equipment such as aquatic plant harvesters are an effective means of control. Along with removing the vegetation, harvesters remove the phosphorus suspended in the plant material.

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