The Mississippi levee system represents one of the largest such levee systems found anywhere in the world. It comprises over 3,500 miles of levees extending some 620 mi along the Mississippi, stretching from Cape Girardeau, MO, to the Mississippi Delta. The U.S. Army Corps of Engineers, in conjunction with the Mississippi River Commission, extended the levee system beginning in 1882 to cover the riverbanks from Cairo, IL to the mouth of the Mississippi Delta in Louisiana. By the mid-1980s, they had reached their present extent and averaged 24 feet in height; some Mississippi levees are as high as 50 feet. The Mississippi levees also include some of the longest continuous individual levees in the world. MWRA membership includes two important levee board members.