Water-table and potentiometric-surface altitudes of the upper glacial, Magothy, and Lloyd aquifers on Long Island, New York, in March-April 2000, with a summary of hydrogeologic conditions
Water-Resources Investigations Report
2001-4165
Prepared in cooperation with the New York City Department of Environmental Protection
Suffolk County Department of Health Services
Suffolk County Water Authority
Suffolk County Department of Health Services
Suffolk County Water Authority
Links
- Document: Report (1.32 MB pdf)
- Plates:
- Plate 1a - Altitude of the water table in upper glacial aquifer in western Long Island, N.Y., March-April 2000, orig. size 28"x28" (1.10 MB pdf)
- Plate 1b - Altitude of the water table in upper glacial aquifer in eastern Long Island, N.Y., March-April 2000, orig. size 34.25"x28" (819 KB pdf)
- Plate 2a - Altitude of the potentiometric surface in Magothy aquifer in western Long Island, N.Y., March-April 2000, orig. size 28"x28" (1.08 MB pdf)
- Plate 2b - Altitude of the potentiometric surface in Magothy aquifer in eastern Long Island, N.Y., March-April 2000, orig. size 34.25"x28" (795 KB pdf)
- Plate 3a - Altitude of the potentiometric surface in Lloyd aquifer in western Long Island, N.Y., March-April 2000, orig. size 28"x28" (1.06 MB pdf)
- Plate 3b - Altitude of the potentiometric surface in Lloyd aquifer in eastern Long Island, N.Y., March-April 2000, orig. size 34.25"x28" (782 KB pdf)
- Download citation as: RIS | Dublin Core
Abstract
The three main water-bearing units on Long Island, New York--the upper glacial aquifer (water table) and the underlying Magothy and Lloyd aquifers--are the sole source of water supply for more than 3 million people. Water-table and potentiometric-surface altitudes were contoured from water-level measurements made at 394 observation, public-supply, and industrial-supply wells during March-April 2000. In general, water-level altitudes in the upper glacial, Magothy, and Lloyd aquifers were lower throughout most parts of Long Island than those measured during March-April 1997. Changes in altitude during this period ranged from an increase of about 6 feet in the Magothy aquifer in southwestern Nassau County to a decrease of more than 8 feet in the upper glacial aquifer in eastern Suffolk County.
Suggested Citation
Busciolano, R., 2002, Water-table and potentiometric-surface altitudes of the upper glacial, Magothy, and Lloyd aquifers on Long Island, New York, in March-April 2000, with a summary of hydrogeologic conditions: U.S. Geological Survey Water-Resources Investigations Report 2001-4165, Report: iv, 17 p.; 6 Plates , https://doi.org/10.3133/wri014165.
Study Area
Table of Contents
- Abstract
- Introduction
- Hydrogeology
- Hydrologic conditions
- Water-table and potentiometric-surface altitudes in March-April 2000, and changes from March-April 1997 conditions
- Summary and conclusions
- References cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Water-table and potentiometric-surface altitudes of the upper glacial, Magothy, and Lloyd aquifers on Long Island, New York, in March-April 2000, with a summary of hydrogeologic conditions |
| Series title | Water-Resources Investigations Report |
| Series number | 2001-4165 |
| DOI | 10.3133/wri014165 |
| Year Published | 2002 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | New York Water Science Center |
| Description | Report: iv, 17 p.; 6 Plates |
| Country | United States |
| State | New York |
| Other Geospatial | Long Island |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | Y |