Researchers are taking water samples from nearly 300 different spots in the Minnesota, Mississippi and St. Croix rivers to determine whether the invasive carp have spread this far upstream.
Groups float ideas for stopping Asian carp migration
A privately funded group continues work on a fast-track plan to stop invasive Asian carp from reaching the Great Lakes. The group hopes to release its plan in January. The Detroit Free Press reports one of the options includes a series of barriers in the Illinois River to stop the destructive species from traveling from the Mississippi River through Chicago to Lake Michigan. Minnesota is part of a suit to force federal officials to speed up the effort to halt the fish before they spread further.