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.
"Plaquemines Parish has been affected by this issue since June. Drought conditions have only gotten worse since that time, which means additional communities along the Mississippi River could be impacted," Louisiana Gov. John Bel Edwards said in a statement Friday.
The U.S. Army Corps of Engineers constructed an underwater barrier sill in July to create an artificial basin to help delay the ingress of saltwater. The upriver intrusion of saltwater overtopped the sill's elevation earlier this week. Next week, officials will begin making the existing sill larger to further delay the saltwater intrusion by an estimated 10 to 15 days.
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