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Asian carp barrier erected along Des Plaines River

October 29, 2010 at 04:53 PM

CHICAGO (AP) — A wire mesh fence is now up between the Des Plaines River and a shipping canal in an effort to keep the invasive Asian carp out of the river in the event of flooding.

The U.S. Army Corps of Engineers, environmental agencies and lawmakers marked the completion of the 13-mile-long barrier on Friday.

Asian carp can grow to 4 feet long and 100 pounds, and many fear they could starve out native fish if they get into the Great Lakes.
They’ve been making their way northward after escaping from Southern fish farms decades ago, and electric barriers in the canals are meant to stop them from going farther.

But the barrier between the Des Plaines River and the canal is meant to keep the fish from washing over into the river if the canal ever floods.

Your CommentsComments :: Terms :: .(JavaScript must be enabled to view this email address)

Won’t the fry be able to swim thorugh anything larger than a screen?

Posted by .(JavaScript must be enabled to view this email address) on 11/01 at 01:27 PM

I am all for keeping the carp out, but I think the Corp of Engineers should concentrate on maintaing existing dikes & levees in the state so we don’t have a flood similar to the one in Portage Wi earlier this year.

Posted by .(JavaScript must be enabled to view this email address) on 11/01 at 09:24 PM

Rasputin, go to asiancarp.org. click on official press release that is the Corps of Engineers, at the bottom of the page is a link to flickr or flickr.com/photos/usacechicago. I had the same thoughts as you i.e. what kind of fence would let water through but not carp fry.
Think it will work?

Posted by .(JavaScript must be enabled to view this email address) on 11/02 at 08:40 AM

From the photo, it appears to be a very “fine” mesh screen, which I suppose would work. But my concerns are the same. If you build a fence/barrier with a wide screen, carp fry will surely pass through. If you build a barrier with fine mesh, any type of current in the water will surely put pressure on the barrier. With enough current (or debris build up) the barrier would surely buckle under the pressure. But Hey, I’m not an engineer. What do I know?

Posted by .(JavaScript must be enabled to view this email address) on 11/02 at 10:03 AM

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