This May 1, 2019, file photo, shows the Davis Pond Diversion, a project that diverts water from the Mississippi River, left, into the Barataria Basin to reduce coastal erosion in St. Charles Parish, La. Officials are breaking ground in southeast Louisiana on a nearly $3 billion project to fight coastal wetland loss. It involves building massive gates in a section of levee in a rural area southeast of New Orleans and creating a channel to divert some of the Mississippi River’s sediment-laden water into an area known as the Barataria Basin. (AP Photo/Gerald Herbert, File)
