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For questions concerning established safety zones and/or closures of the Chicago Sanitary and Ship Canal, please submit your question below.

For questions concerning the operation of the Aquatic Nuisance Species Dispersal Barrier or the science behind preventing the spread of invasive species, go to the U.S. Army Corps of Enginners web site at http://www.lrc.usace.army.mil/projects/fish_barrier/index.html.

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