The Army Corps of Engineers has tweaked how it runs Lock and Dam 8 on the Mississippi River in Genoa, Wisconsin, in hopes of impeding the spread upriver of invasive Asian carp.
Officials say five invasive bighead carp have been caught in the St. Croix River in the past week, just south of Stillwater. The Minnesota Department of Natural Resources says it's the farthest upstream that bighead carp have been found in the St. Croix, and it's about 7 miles north of the previous point.
Members of Congress have introduced legislation calling for interim steps to prevent invasive Asian carp from reaching the Great Lakes through Chicago-area waterways while a permanent solution is debated.
University of Minnesota researchers are moving ahead with placing speakers at a lock on the Mississippi River near Genoa, Wisconsin, even though a federal agency has backed off its statement that Asian carp eggs had been found nearby.
Experts say the discovery of a dead Asian carp near Winona confirms the invasive fish are using their leaping ability to attempt to overcome barriers. The Minnesota Department of Natural Resources says the carcass of a silver carp was found recently on a dam abutment just north of Winona, the furthest upstream a silver carp has been discovered in the Mississippi River.
A member of Congress from Michigan says the U.S. Army Corps of Engineers will not meet a legal deadline for completing a plan to preventing Asian carp from invading the Great Lakes.
There's a back door for Asian carp to sneak into Minnesota, and fisheries officials are worried the invaders might have found it already. It runs through Iowa.
Two members of Congress say an electric barrier system near Chicago meant to prevent Asian carp from reaching the Great Lakes had a 13-minute power outage.