Morgan City, Louisiana it soon replaced the Loganberry of California. According to the United States Census Bureau, the city has a total area of , of which is land and , or 4.03%, is water. If the Mississippi River were to experience a major course change in the vicinity of the Old River Control Structure or Morganza Spillway, the main channel of the river would likely enter the Gulf of Mexico near Morgan City instead of New Orleans. As of the census of 2000, there were 12,703 people, 5,037 households, and 3,394 families residing in the city. The population density was 2,166.5 people
Morganza Spillway was expected in the Atchafalaya Basin regardless of the choice made regarding the Morganza Spillway, the Corps decided to start the 2011 diversion by opening the spillway a bit less than described in scenario 1a (21%, not 25%) The Governor of Louisiana, Bobby Jindal, had meanwhile sent a letter on May 4, 2011, to Robert Gates, the United States Secretary of Defense, requesting that the National Guard be deployed under Title 32 of the United States Code status to respond to record water levels in Louisiana, where there was "a significant probability that the U.S. Army Corps of Engineers [would]