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Articles on Mississippi River

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In 2022, California built an emergency drought barrier across the West False River near Oakley to protect against saltwater intrusion. AP Photo/Terry Chea

What is seawater intrusion? A hydrogeologist explains the shifting balance between fresh and salt water at the coast

Saltwater intrusion is bad for human health, ecosystems, crops and infrastructure. Here’s how seawater can move inland, and why climate change is making this phenomenon more frequent and severe.
A barge maneuvers its way down the drought-narrowed Mississippi River at Tiptonville, Tenn., Oct. 20, 2022. AP Photo/Jeff Roberson

Record low water levels on the Mississippi River in 2022 show how climate change is altering large rivers

Record low water levels on the Mississippi and other major rivers, as seen in 2022, could become more common, threatening transportation of many key goods and raising prices.

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