A saltwater intrusion in the Mississippi River poses a threat to Louisiana's water supply. The river has low water levels due to drought conditions allowing an intrusion.

New Orleans Mayor LaToya Cantrell has signed an emergency declaration over an intrusion of saltwater into the Mississippi River that officials say could impact the water supply in the region.

“We will continue to work with our partners locally and state-wide as we closely monitor this situation,” Cantrell wrote on X, formerly known as Twitter.

Officials said weather forecasts indicate that river volume will fall to historic lows in the next several weeks. As a result, saltwater from the Gulf of Mexico is intruding upstream in Louisiana.