Scientists recently collected 32 DNA samples of Asian carp between the barrier and Lake Michigan in waterways south of Chicago, although the fish have yet to be spotted in the area, said Maj. Gen. John Peabody of the U.S. Army Corps of Engineers.
If the feared bighead and silver carp have made it through the $9 million barrier, the only remaining obstacle between the carp and Lake Michigan is a navigational lock on the Calumet River.
Still, federal officials insisted, a Great Lakes invasion is not inevitable.
“We’re going to keep throwing everything we possibly can at them to keep them out,” said Cameron Davis, senior Great Lakes adviser to Lisa Jackson, head of the Environmental Protection Agency.
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