CITY OF EAU CLAIRE: Half Moon Lake CLP Treat, Assess


The City of Eau Claire proposes to apply herbacides in whole lake treatments to control Curly Leaf Pondweed in Half Moon Lake, Eau Claire County, in 2012 and 2013. Other project elements to include: 1) aquatic plant sampling and monitoring, 2) water quality sampling and monitoring, and 3) final report. Additional Special Condition: The attached Special Conditions are requirements of the U.S. Environmental Protection Agency (EPA) Federal Great Lakes Restoration Initiative (GLRI) funding being used to provide a portion of the State cost share for this project.

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The aquatic plant community of a lake is full of complex interactions that contribute to the overall health of an aquatic ecosystem. Every level of the aquatic food chain from bacteria and invertebrates to fish and waterfowl are dependent upon aquatic plants to some degree for their survival (Engel, 1985; Wetzel, 2001). Photosynthesis and respiration are important in maintaining clear waters (Engel, 1990). Aquatic plants stabilize sediments and absorb wave action which in turn prevents turbidity caused by suspended sediments. Light penetration, excess nutrients from run-off, wave action and lake morphometry all affect the plant community of the littoral zone (Barko 1988; Duarte and Kalff, 1986). The importance of aquatic plants in an aquatic ecosystem creates the need to study the diversity, density and distribution of the aquatic plant community as well as an examination of the factors impacting the plant community.
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Monitor Water Quality or Sediment