After the Great Mississippi Flood of 1927 , the engineering policy on the Mississippi River changed from building levees high enough to withstand the greatest recorded flood to include floodways . The Flood Control Act of 1928 authorized the United States Army Corps of Engineers to construct the Birds Point-New Madrid Floodway in Missouri and the Morganza Spillway and Bonnet Carre Spillway in Louisiana
Great Mississippi Flood of 1927
Great Mississippi Flood of 1927
Birds Point-New Madrid Floodway