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All of Long Island's water supply comes from underground water reserves held in aquifers. Stacked one on top of the other like layers in a cake, three major and one minor aquifer make up the Long Island aquifer system. In sequence from shallowest to the deepest, the Long Island aquifers are: the Upper Glacial, the Magothy and the Lloyd Aquifers.
Aquifer compaction is a significant concern along with pumping-induced land subsidence. A large portion of the groundwater storage potential of many aquifers can be significantly reduced when longterm groundwater extraction, and the resulting groundwater level decline, causes permanent compaction of fine sediment layers (silts and clays).
Long Island drinking water is sourced from a large aquifer which is at risk of contamination if chemical pollution continues. Long Island is one of the most developed areas in the United States with a majority of the high intensity development located closer to New York City and lower intensity development moving east across the island. High ...
The safe yield for the Kankakee Aquifer is an estimated 44 million gallons per day, as long as it’s recharged as usual. About 25% to 35% of that yield is already being used.
The following is a partial list of aquifers around the world. ... Magothy aquifer – largest of Long Island's aquifers; Mahomet Aquifer; Medina aquifer;
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. Because saline water has a ...
The construction of Water Tunnel No. 3 is intended to provide the city with a critical third connection to its upstate supply system so that the city can, for the first time, close tunnels No. 1 and No. 2 for repair. The tunnel will eventually be more than 60 miles (97 km) long.
Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and manufacturing industries—although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]