A new report by the Great Lakes Commission and the Great Lakes and St. Lawrence Cities Initiative has identified the possibility of incorporating permanent physical barriers to keep Asian carp from entering the Great Lakes system.

From the Great Lakes Commission:

“The three separation alternatives include a down-river single barrier between the confluence of the Chicago Sanitary and Ship Canal and the Cal-Sag Channel and the Lockport Lock; a mid-system alternative of four barriers on CAWS branches between Lockport and Lake Michigan; and a near-lake alternative of up to five barriers closest to the lakeshore. All three include measures to improve the CAWS’s role in flood management, wastewater treatment and maritime transportation, as well as stopping the interbasin movement of aquatic invasive species.” Read more here.