Report Proposes Plan to Deter Asian Carp From Entering Great Lakes
by Tom Henry
The U.S. Army Corps of Engineers is recommending the electrical barrier near Chicago that has been used to deter Asian carp from entering Lake Michigan be augmented with complex noise, water jets, an engineered channel, and other structural improvements such as a flushing lock, and a mooring area.
The Corps is not recommending a complete separation of the Great Lakes and Mississippi River watersheds, as many Great Lakes scientists and policy-makers, such as Ohio Attorney General Mike DeWine and U.S. Rep. Marcy Kaptur (D., Toledo) have urged for years to provide optimal protection for the region’s $7 billion fishery. The issue has long pitted the Chicago-area shipping industry and Lake Erie sportsmen. The shipping industry wants the status quo while Lake Erie – which spawns more fish than the rest of the Great Lakes combined – could have the most to lose if Asian carp are able to colonize the lake system, regardless of the entry point.
The long-awaited, 488-page Corps report went online Monday at http://bit.ly/2vIibCN. Miss Kaptur pushed for its release after the Great Lakes congressional delegation learned the study was completed in early 2017 but that the Trump administration was keeping it from being made public.
Six alternatives were considered.
The Corps would pay for 65 percent of the estimated $275 million of work outlined, or $179 million. The other $96 million would be paid by non-federal sources. The focus area for the work is the Brandon Road Lock and Dam near Joliet, Ill.
In its report, the Corps called its plan the “Technology Alternative – Complex Noise with Electric Barrier” plan.
That option is recommended “because it meets the project objective by reducing the risk of Mississippi River basin [aquatic invasive species] establishment in the Great Lakes basin to the maximum extent possible, and it provides for continued navigation,” the Corps said in its report, adding that the plan “will be most effective if the electric dispersal barrier operates continuously at optimal parameters to deter fish.”
The Corps is taking comments on its recommendation until Sept. 21. It is making plans for two public meetings.
On June 22, a silver Asian carp – the type so sensitive to boat motor vibrations they flop out of water – was found nine miles from Lake Michigan near the T.J. O’Brien Lock and Dam, upstream from a series of electrical barriers designed to keep it out.
Howard Learner, Chicago-based Environmental Law & Policy Center director, said the report “makes clear it’s time for serious preventative actions to keep Asian carp out of the Great Lakes.”