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 , this aquifer system contains about 50 trillion gallons of freshwater.
Masterson, J.P., and Breault, R., 2019, Water for Long Island—Now and for the future: U.S. Geological Survey Fact Sheet 2019–3052, 2 p., https://doi.org/10.3133/fs20193052.
ISSN: 2327-6932 (online)
ISSN: 2327-6916 (print)
Table of Contents
- Do You Ever Wonder Where Your Water Comes From?
- Why Is Groundwater Important?
- Why Is Saltwater Intrusion a Concern?
- What Are Other Groundwater Quantity and Quality Concerns?
- How Is the U.S. Geological Survey Assessing Groundwater Sustainability?
Additional publication details
|Publication Subtype||USGS Numbered Series|
|Title||Water for Long Island: Now and for the future|
|Series title||Fact Sheet|
|Publisher||U.S. Geological Survey|
|Publisher location||Reston, VA|
|Contributing office(s)||New York Water Science Center, New England Water Science Center|
|Other Geospatial||Long Island|
|Online Only (Y/N)||N|