CHICAGO -- The U.S. Army Corps of Engineers says it might need to increase the voltage on the electric barrier built to keep Asian carp out of the Great Lakes.
A report released Friday says the barrier won't completely stop small carp on the Chicago Sanitary and Ship Canal unless the barrier uses more power.
But the Corps of Engineers says it doesn't plan to increase voltage right away because the nearest carp of the size tested are more than 100 miles from the barrier. Officials say higher voltage also could pose safety risks.
Asian carp have long been seen as a severe threat to the Great Lakes. Biologists say that if carp get past the barrier, they could threaten other wildlife and the $7 billion fishing industry.
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