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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 .
Dykes, an igneous unit that is impermeable or low in hydraulic conductivity might stop the intrusion of seawater. [28] Faults also affect the direction of water flow which is studied by Fault Zone Hydrogeology. Both regular and catastrophic flooding can cause downward intrusion of seawater recreating the transition zone of the fresh-salt water ...
In 1975, the saltwater drain was modified to divert some salt water from the basin to the fish ladder, where it is added via a diffuser to the fish ladder attraction water; see below. [2]: 2 To further restrict saltwater intrusion, in 1966, a hinged barrier was installed just upstream of the large lock.
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That is a sentiment echoed by officials across the state, as the drought-stricken Mississippi River’s flow is low and slow, allowing for salt water from the Gulf of Mexico to intrude upstream ...
Overdrafting in coastal regions can lead to the reduction of water pressure in an aquifer, allowing saltwater intrusion. If saltwater contaminates a freshwater aquifer, that aquifer can no longer be used as a reliable source of freshwater for settlements and cities. Artificial recharge may return fresh water pressure to halt saltwater intrusion.
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