Michigan Attorney General Mike Cox, together with the AGs from Minnesota, Ohio, Pennsylvania and Wisconsin, is asking an Illinois federal court to temporarily close Chicago area shipping locks in order to block the migration of invasive Asian carp.
The Chicago Tribune reports that the suit charges the Metropolitan Water Reclamation District of Greater Chicago and the U.S. Army Corps of Engineers with failing to stop the fish from moving toward the Lake Michigan.
Asian carp can grow to 100 lbs. and eat 40 percent of their body weight each day. Experts warn that they could decimate the native fish populations and the fishing industry if they become established in the Great Lakes. Last month a sexually mature bighead carp was caught in Lake Calumet, which is connected to Lake Michigan.
“Based on what we’ve seen, it’s pretty clear that carp are getting beyond the (electric) barrier, and that has simply not been good enough,” said Cox, a Republican candidate for governor in Michigan. “These fish are a clear and present danger to the Great Lakes.”
In addition to lock closings, the suit calls for the use of nets, physical barriers and fish toxins to control carp movement. It also urges the Army Corps to complete a study looking at severing the Chicago-area shipping corridor that connects Lake Michigan to the Mississippi River watershed within 18 months.
This is the third attempt by Michigan and the other Great Lakes states to get a federal court to take action on the carp issue. In January the U.S. Supreme Court refused to issue an emergency order to close the Chicago shipping locks and in April the court refused to hear the case which pitted Michigan and other Great Lakes states against Illinois, the Metropolitan Water Reclamation District of Greater Chicago, and the federal government.