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Water for Long Island: Now and for the future

October 8, 2019

Do you ever wonder where your water comes from? If you live in Nassau or Suffolk County, the answer is, groundwater. Groundwater is water that started out as precipitation (rain and snow melt) and seeped into the ground. This seepage recharges the freshwater stored underground, in the spaces between the grains of sand and gravel in what are referred to as aquifers. Long Island has three primary aquifers—the upper glacial, Magothy, and Lloyd—which are part of the Long Island aquifer system. Currently [2019], this aquifer system contains about 50 trillion gallons of freshwater.

Publication Year 2019
Title Water for Long Island: Now and for the future
DOI 10.3133/fs20193052
Authors John P. Masterson, Robert F. Breault
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Fact Sheet
Series Number 2019-3052
Index ID fs20193052
Record Source USGS Publications Warehouse
USGS Organization New York Water Science Center