Louisiana fights saltwater intrusion in Mississippi River 2023

In 2023, Louisiana is facing a significant challenge with saltwater intrusion in the Mississippi River, which threatens the drinking water supply for southeastern communities. For the third consecutive year, an underwater levee, known as a sill, is being constructed in Myrtle Grove, approximately 30 miles south of New Orleans. This structure aims to slow the movement of saltwater, which is denser than fresh water and flows along the riverbed. The U.S. Army Corps of Engineers is overseeing the construction, which is expected to be completed by October. The situation has prompted close monitoring by state officials, as the influx of brackish water has previously forced residents in areas like Plaquemines Parish to rely on bottled water for extended periods. In response to last year's crisis, federal assistance was provided, including emergency declarations from President Biden, which facilitated the transport of fresh water to treatment facilities to dilute salt levels. While no immediate threats to drinking water have been reported this year, officials remain vigilant and prepared for potential escalations. Alternative measures, such as using barges to transport fresh water or issuing boil advisories, are being considered should the situation worsen. The reliance on the Mississippi River for fresh water underscores the urgency of addressing this environmental issue. The construction of the sill is part of a broader strategy to combat saltwater intrusion, which has been a recurring problem in the region. The outcome of this year's efforts will be crucial in determining the long-term viability of drinking water supplies for the affected communities.