Invasive carp closer to threatening Lake Superior
While most eyes have been on the Great Lakes as the likely route for an Asian carp invasion into the Northland, the creatures already may be making a back-door move into the region up the St. Croix and Mississippi rivers.
State and federal officials announced last week that silver Asian carp DNA has been found in 22 of 50 St. Croix River water samples taken as far north as St. Croix Falls, Wis.
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