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Saltwater intrusion is an ecological problem produced by the encroachment and infiltration of salt water (typically brackish water or seawater) into the fresh surface water and groundwater supplies of coastal areas.
Saltwater intrusion is the movement of saline water into freshwater aquifers, which can lead to groundwater quality degradation, including drinking water sources, and other consequences. Saltwater intrusion can naturally occur in coastal aquifers, owing to the hydraulic connection between groundwater and seawater.
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.
Saltwater intrusion decreases freshwater storage in the aquifers, and, in extreme cases, can result in the abandonment of wells. Saltwater intrusion occurs by many ways, including lateral encroachment from coastal waters and vertical movement of saltwater near discharging wells.
The short answer is saltwater intrusion and a rise in the coastal water table. When sea levels rise due to storm surges, saltwater from the ocean can encroach inland into freshwater systems, a process known as saltwater intrusion. While this inundation of seawater is often temporary, rising sea levels from melting ice sheets and the thermal ...
Saltwater intrusion is the movement of ocean saltwater into freshwater aquifers due to changes in density and pressure gradients, determined by several factors including elevation and sediment type. Groundwater quality, quantity and subsurface water movement is traditionally measured through terrestrial monitoring wells.
Seawater intrusion is the movement of saline water from the ocean or estuaries into freshwater systems. The seawater that has crept up the Mississippi River in the summer and early fall of 2023...
Saltwater intrusion can result in the need for water utilities to increase treatment, relocate water intakes, or development of alternate sources of fresh water. Saltwater intrusion, through surface or ground water sources, may diminish the availability or quality of source waters for drinking water utilities.
Saltwater incursion can occur in one of three ways, all as a result of over-pumping. The first is large-scale, lateral flow into the coastal aquifer, the second is vertical upward flow, and the third is flow into the aquifer from coastal streams and canals, often forced by tidal movements.
Saltwater intrusion is the movement of saline (or salty) water into an aquifer that previously held freshwater. If we know the source of the salt water is marine seawater, it is often referred to as seawater intrusion.