DETROIT, Mich. (WXOW) -- Samples from waters near Lake Michigan are showing genetic material from invasive Asian carp.
The U.S. Army Corps of Engineers found the genetic material.
Lake Calumet in Chicago and the Little Calumet River showed signs of silver carp after findings from May 22 collections.
Monday, a water policy advocate for the Alliance for the Great Lakes said the findings mean "another year of worry" about Asian carp.
Bighead and silver carp were imported from Asia.
The fish have made their way up the Mississippi River and its tributaries.
An electric barrier is controlling the movement of the fish.
A single Asian carp has been found beyond the barrier.
All content © Copyright 2000 - 2013 WorldNow and WXOW. All Rights Reserved.
Persons with disabilities who need assistance with issues relating to the content of this station's public inspection file should contact Administrative Assistant Theresa Wopat at 507-895-9969. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, at 888-835-5322 (TTY) or at firstname.lastname@example.org.