The U.S. Army Corps of Engineers accepted public comments on its Great Lakes-Mississippi River Interbasin Study (GLMRIS) Report through the month of March. LWV Illinois, LWV Wisconsin and LWV Michigan each submitted letters supporting hydrologic separation to prevent the transfer of invasive species between the Mississippi River watershed and the Lake Michigan watershed. USACE analyzed the expected effectiveness of eight different scenarios that might be used to control the spread of aquatic nuisance species. The analysis is based on the 13 species, listed in the chart at right, that are considered the most risky. The two plans that include permanent barriers between the watersheds are the only ones that are effective against all species, according to the government's analysis. The Leagues' actions were based on their respective Great Lakes Ecosystem positions. Comments are closed.
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