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Case Studies
Water Management Associations
In Battle for Clean Water, Carp Win First Round
The Okabena-Ocheda Watershed District worked on two projects over the winter specifically aimed at reducing carp populations in the local lakes. The first, a wintertime drawdown of Lake Ocheda that hoped to freeze out fish populations, wasn’t successful because streams, tile and groundwater flowed into the lake all winter, keeping the water under the ice well-oxygenated.

The second project that didn’t go as hoped was the carp tracking program on Lake Okabena. The goal was to monitor carp movement and conduct a winter-time seining project on the lake to remove high populations of the roughfish.  While carp tracking seemed to work well, the carp didn’t school up this winter as hoped. That, along with poor ice conditions later in the season, eliminated the opportunity for seining. 

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Harvesters, Herbicide May be Part of 2018 Curlyleaf Plan - Community members, government entities and water quality advocacy groups have partnered to create a plan to address curlyleaf pondweed in the Iowa Great Lakes. The group is considering weed prevention methods, mechanical removal and herbicide application for the 2018 season.

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