News Detail

Inside the Race to Build a $1.2 Billion Fish Barricade

By: Tom Johnson, Undark

OVER THE PAST 50-some years, invasive carp, a stunningly destructive invasive species, have infested almost every waterway in the Midwest, from South Dakota to beyond the Mississippi Delta, and have even reached West Virginia. In some waters, it’s been reported that around 90 percent of the fish are invasive carp; in one section of the Illinois River, a Mississippi tributary, they make up more than 75 percent of the total biomass in the water. They are obnoxious invaders, overwhelming other fish species, muddying clear waters, and — in some cases — jumping out of the water when startled. A passing boat can throw hundreds of fish into a frenzy, creating an airborne blizzard of 25-pound lunkers that have broken the arms and jaws of recreational boaters.

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