Mississippi River–Gulf Outlet Canal

The Mississippi River–Gulf Outlet Canal (abbreviated as MR-GO or MRGO) is a 76 mi (122 km) channel constructed by the United States Army Corps of Engineers at the direction of Congress in the mid-20th century that provided a shorter route between the Gulf of Mexico and New Orleans' inner harbor Industrial Canal via the Intracoastal Waterway. In 2005, the MRGO channeled Hurricane Katrina's storm surge into the heart of Greater New Orleans, contributing significantly to the subsequent multiple engineering failures experienced by the region's hurricane protection network.

Source: Wikipedia — Mississippi River–Gulf Outlet Canal (CC BY-SA 4.0)