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State DNR stepping up invasive species enforcement

Upper St. Anthony Falls Lock and Dam
The Patrick Gannaway entered the Upper St. Anthony Falls lock in Minneapolis, Minn. Wednesday, May 20, 2015. After more than 50 years of operation, the Upper St. Anthony Falls lock will be closed to quell the possible spread of invasive carp species.
Jeffrey Thompson | MPR News

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Asian carp
Silver carp in a tank Thursday, Apr. 4, 2013 at the Minnesota Aquatic Invasive Species Research Center on the University of Minnesota St. Paul campus.
Jennifer Simonson | MPR Photo file

The fight against invasive carp starts a new chapter Tuesday night when the Upper St. Anthony Falls Lock and Dam in downtown Minneapolis closes for good. There's a hope the closure will create a barrier past which the fish can't swim.

Let's not forget that carp are just one of many aquatic invasive species threatening Minnesota's rivers and lakes. With the boating season now underway, MPR News' Tom Weber checked in with the state's Department of Natural Resources for an update.