Old River Control Structure channel and lock were also part of the original facility design. Subsequent expansion created what is now known as the Old River Control Complex, when the Auxiliary Structure, which became operational in 1986, was added to reduce pressure on the original floodgates after extensive damage caused by the flood of 1973. The Sidney A. Murray Jr. Hydroelectric Station, completed in 1990, also provides an additional measure of control at the site. Water from the Mississippi is normally diverted into the Atchafalaya Basin only at Old River, where floodgates are routinely used to redirect the Mississippi's flow into the Atchafalaya River
Morganza High School School Board until being closed in 2008. The school buildings and grounds are currently used as a law enforcement training facility for the Pointe Coupee Parish Sheriff's Office. As part of a community project, the school's gymnasium was renovated in 2014 and is currently used as a community athletic facility, as well as a parish athletic hall of fame museum. John B. Fournet, later a supporter of Huey Pierce Long, Jr., Speaker of the Louisiana House of Representatives, lieutenant governor, and associate and Chief Justice of the Louisiana Supreme Court, was the principal of Morganza High School in the 1916-1917