Called saltwater intrusion, the phenomenon happens below coastlines, where two masses of water naturally hold each other at bay. Rainfall on land replenishes, or recharges, fresh water in coastal ...

Saltwater intrusion happens when the Mississippi River level is low. With less water flowing downriver, there is not enough pressure to keep saltwater from the Gulf of Mexico out.

The saltwater is threatening drinking water supplies in the New Orleans metro area. The U.S. Army Corps of Engineers built an underwater levee to stop the intrusion.

Saltwater intrusion is exactly what it sounds like: when saltwater intrudes inland further than expected, often jeopardizing freshwater supplies such as aquifers.

Gulf of Mexico saltwater is moving up the drought-stricken Mississippi River, threatening Louisiana drinking water. Here’s what you need to know.

Gulf saltwater flowing up Mississippi River threatens fresh water sources 02:52. Communities along the freshwater Mississippi River are facing a growing threat from an intrusion of saltwater ...

Saltwater intrusion is not confined to Florida or Delaware, it is a national issue. From coastal California to the Gulf of Mexico, its driven by climate change and unsustainable water management ...

Plaquemines Parish officials are closely monitoring the Mississippi River for saltwater intrusion. The Army Corps of Engineers posted a report saying the toe of the wedge is at River Mile 22.1 as ...

This phenomenon, known as saltwater intrusion, occurs when the rate of flow in the river dips below 300,000 cubic feet per second, leaving the river’s freshwater unable to push back against ...

Usually this effect, called saltwater intrusion, is held in check by a freshwater layer, or "lens." Freshwater is less dense than saltwater.

Saltwater intrusion from groundwater pumping is nothing new: It has been recorded in Nassau since the 1940s and in Suffolk since the 1970s. This study, which was launched in 2016, ...