Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Water Table Contours in the Upper Glacial and Magothy Aquifers, April-May 2013

Metadata Updated: October 29, 2023

This polyline shapefile consists of digital contours that represent the water table altitude in the upper glacial and Magothy aquifer beneath Long Island, New York. The U.S. Geological Survey constructed a water table altitude map using ground-water levels measured in the upper glacial and Magothy aquifers during the spring of 2013. Contours were constructed at a scale of 1:125,000 from water-level data collected at 335 groundwater monitoring wells. The water table altitude contours were digitized and compared to 1997, 2006, and 2010 water table altitude maps . The variable contour interval ranges from 5 to 120 feet above the National Geodetic Vertical Datum of 1929 (NGVD29). This polyline shapefile is a digital representation of the potentiometric-surface contours presented in sheet 1 of Scientific Investigations Map 3326.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Identifier USGS:56f59803e4b06639d52a3a1d
Data Last Modified 20221117
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id ef14c8e1-cff3-4129-8e75-d94fadb23672
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -74.01216,40.586776,-71.859336,41.110762
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash fafe73d724580d5b976b6af6c140bf7fd71b31e334844e1e190990030c4cf576
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -74.01216, 40.586776, -74.01216, 41.110762, -71.859336, 41.110762, -71.859336, 40.586776, -74.01216, 40.586776}

Didn't find what you're looking for? Suggest a dataset here.