A black junction box houses the electrical cables that supply power to the Acquatic Nuisance Species Dispersal Barrier Project located on the banks of the Chicago Ship and Sanitary Canal in Lockport, Ill., April 18, 2002.
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Updated: Wednesday, 19 Oct 2011, 3:54 PM EDT
Published : Wednesday, 19 Oct 2011, 3:54 PM EDT
TRAVERSE CITY, Mich. (AP) - Authorities are reducing power on an electric barrier designed to prevent Asian carp from reaching the Great Lakes, barely a week after turning up the juice to make the device more effective.
The U.S. Army Corps of Engineers said Wednesday test results suggest the higher setting might be interfering with a crossing gate and operating signals for a railroad near the electric barrier, located 37 miles by water from Chicago. The Corps says that could cause safety problems for trains.
The Corps says it cut power from 2.3 volts back to 2 volts, the setting before it was boosted Oct. 11.
The barrier emits electric pulses in the Chicago Sanitary and Ship Canal to prevent Asian carp and other fish from migrating between the Great Lakes and Mississippi River watersheds.
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