Saltwater moving up the Mississippi River in southeast Louisiana
9/19/2025 10:52:58 AM
CATEGORIES:
Relief, Response & Restrictions
Society & Public Health
Water Supply & Quality
AFFECTED AREAS:
Arkansas
Illinois
Kentucky
Louisiana
Plaquemines Parish, LA
Missouri
Mississippi
Tennessee
Start Date: 9/19/2025
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The Army Corps of Engineers planned to begin construction on an underwater sill across the bed of the Mississippi River to help prevent upriver progression of saltwater from the Gulf. The Mississippi River’s volume of water has dropped enough to allow saltwater to move upstream as much of the Mississippi River Valley was affected by drought.
WDSU (New Orleans, La.), Sep 19, 2025
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