Electric barrier, last line against invasive species

Day 2: Front Door, Back Door

June 21, 2011

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(WBEZ/Gabriel Spitzer)
Lieutenant Colonel David Berczek of the U.S. Army Corp. of engineers at Sanitary and Ship Canal.
(WBEZ/Gabriel Spitzer)
Electric barriers keep fish from swimming up the river.
(WBEZ/Gabriel Spitzer)
Some engineers are concerned smaller fish could slip through electric barriers.
(WBEZ/Gabriel Spitzer)
Lieutenant Colonel David Berczek of the U.S. Army Corp. of engineers stands in front of electric barrier controls.

In connecting the Great Lake Michigan to the Mighty Mississippi, Chicago left the back door open to some unwelcome visitors. Asian Carp are the latest threat and our last line of defense spans the Sanitary and Ship Canal, about 30 miles southwest of the city. WBEZ’s Gabriel Spitzer visited the electric barriers there.  In this report he explains how engineers are trying to hold the line against the fish.