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By Dan Egan of the Journal Sentinel
July 20, 2011 12:42 p.m. | Even as the federal government insists its electric fish barrier is working just fine, evidence of Asian carp above that barrier continues to roll in.
With no fanfare, the U.S. Army Corps of Engineers posted on its website this week news that nine water samples taken above the barrier in recent weeks have tested positive for the giant, jumping fish. The federal government is spending tens of millions of dollars to keep them out of the Great Lakes.
Seven of those positive "environmental" DNA tests - taken between May 10 and June 27 - came from Lake Calumet south of downtown Chicago, a body of water that has a direct connection to Lake Michigan.
The other two positive samples came from an area near downtown and an area north of downtown on the North Branch of the Chicago River.
Lake Calumet is also the site of the only confirmed find of an Asian carp in waters directly connected to Lake Michigan. Last summer a commercial fisherman hired by the state of Illinois to hunt for the fugitive fish pulled out a 19-pound bighead carp.