https://www.wunderground.com/cat6/Americas-Achilles-Heel-Mississippi-Rivers-Old-River-Control-Structure?cm_ven=cat6-widget
<snip>
America has an Achilles' heel. It lies on a quiet, unpopulated stretch of the Mississippi River in Louisiana, 45 miles upstream from Baton Rouge. Rising up from the flat, wooded west flood plain of the Mississippi River are four massive concrete and steel structures that would make a pharaoh envious: the U.S. Army Corps of Engineers’ greatest work, the two billion-dollar Old River Control Structure (ORCS). The ORCS saw its second highest flood on record in March 2019, and flood levels have risen again this week to their fifth highest level on record. While the structure is built to handle the unusual stress this year's floods have subjected it to, there is reason for concern for its long-term survival, since failure of the Old RIver Control Structure would be a catastrophe with global impact.
This first part of a 3-part series will study the history and importance of this critical structure, and how it almost failed in 1973. Part II, scheduled to run on Monday, is titled, Escalating Flood Heights Puts Mississippi River’s Old River Control Structure at Increasing Threat of Failure. Part III is titled, If the Old River Control Structure Fails: A Catastrophe With Global Impact, and will run later next week.
This marvel of modern civil engineering has, for fifty-five years, done what many thought impossible—impose man's will on the Mississippi River. Mark Twain, who captained a Mississippi river boat for many years, wrote in his book Life on the Mississippi, "ten thousand river commissions, with the mines of the world at their back, cannot tame that lawless stream, cannot curb it or define it, cannot say to it 'Go here,' or Go there, and make it obey; cannot save a shore which it has sentenced; cannot bar its path with an obstruction which it will not tear down, dance over, and laugh at." The great river wants to carve a new path to the Gulf of Mexico; only the Old River Control Structure keeps it at bay.
Failure of the Old River Control Structure and the resulting jump of the Mississippi to a new path to the Gulf would be a severe blow to America's economy, robbing New Orleans, Baton Rouge, and the critical industrial corridor between them of the fresh water needed to live and do business. Since a huge portion of our imports and exports ship along the Mississippi River, a closure would cost $295 million per day, said Gary LaGrange, executive director of the Port of New Orleans, during the great flood of 2011. An extended closure of the Lower Mississippi to shipping might cost tens of billions. Since barges on the Mississippi carry 60% of U.S. grain to market, a long closure of the river to barge traffic could cause a significant spike in global food prices, potentially resulting in political upheaval like the “Arab Spring” unrest in 2011, and the specter of famine in vulnerable food-insecure nations of the Third World.
= new reply since forum marked as read
