Heavy rains raised the water levels of the northwest Iowa Great Lakes and led to concerns about bank erosion. D-N-R fisheries biologist Mike Hawkins says the high water also an issue with a device designed to protect the lakes from invaders.
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Hawkins had to tweak the electric fence at Lower Gar Lake as the water got higher this week.
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The barrier has been in place for a couple of years to prevent the invasive carp from getting into the lakes. The fish reproduce rapidly and can come in and quickly overtake the natural species in the lake. They are known for jumping out of the water and have injured boaters.