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<br />Peltier-Centerville Backflow Feasibility Study <br />If youÓve been wondering what that weird pile of <br />equipment is doing between the lakes (see photo), <br />you can read about it below. <br />Centerville Lake does not meet MN State water <br />quality standards and suffers from frequent <br />and occasionally intense algae blooms. Monitoring <br />data indicates an increasing trend in phosphorus and <br />chlorophyll-a annual summer means. A significant <br />portion of the annual phosphorus load for Centerville <br />Lake (~40-50%, TMDL, <br />2013) is thought to be from <br />Peltier Lake backflow. Peltier <br />and Centerville Lake are <br />connected by a pipe under <br />County Highway 14 (See <br />Project Area Map). Backflow <br />is thought to occur when <br />Peltier Lake's surface <br />elevation rises above <br />Centerville Lake's after <br />snowmelt or rain events due to <br />Peltier Lake's much larger <br />watershed and drawn out time <br />of concentration. <br /> <br /> However, <br />the <br />hydraulic <br />relationship <br />between the <br />two lakes is <br />not well <br />understood. <br />Further, the <br />relative <br />impact of <br />potential backflow loading on <br />water quality in Centerville <br />Lake needs further <br />development. If the impact on <br />Centerville Lake is <br />significant, alternatives for mitigating that impact should be developed. <br />The primary purpose of this study is to quantify potential nutrient loading associated with backflow <br />from Peltier Lake into Centerville Lake. A secondary purpose is to develop alternatives to mitigate <br />potential backflow nutrient loading. Primary funding for this effort is provided by a BWSR <br />Watershed-Based Funding Implementation Program grant. <br /> <br /> <br /> <br /> <br /> <br /> <br />