Army Corps of Engineers

The U.S. Army Corps of Engineers is responsible for breakwaters around the country, including the Great Lakes.  

The structures calm the waters within them to allow ships and smaller vessels to navigate safely, but take quite a beating, given shifting lake levels and seasonal storms.   

The usual "fix" is to install big boulders, 6 to 10-feet in size, to reinforce failing stretches of breakwater.

Army Corps of Engineers

The Army Corps of Engineers issued a long-awaited report about ways to keep Asian carp out of the Great Lakes.