Water Table Contours in the Upper Glacial and Magothy Aquifers, April-May 2016

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 2016. Contours were constructed at a scale of 1:125,000 from water-level data collected at 276 groundwater monitoring wells. The water table altitude contours were digitized and compared to 1997, 2006, 2010 and 2013 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 3398.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:12}
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datagov_dedupe_retained 20220721212438
identifier USGS:5995caeae4b0fe2b9fea76a6
metadata_type geospatial
modified 20200825
old-spatial {"type": "Polygon", "coordinates": [[[-73.7615366, 40.587435753], [-73.7615366, 41.107370969], [ -71.85885707, 41.107370969], [ -71.85885707, 40.587435753], [-73.7615366, 40.587435753]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 053ab7bc23adb81ecec8a74bc4303282b0cede84
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-73.7615366, 40.587435753], [-73.7615366, 41.107370969], [ -71.85885707, 41.107370969], [ -71.85885707, 40.587435753], [-73.7615366, 40.587435753]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • ckan
  • contours
  • environment
  • geo
  • geoscientificinformation
  • geoss
  • groundwater
  • hydrology
  • inlandwaters
  • levels
  • long-island
  • magothy-aquifer
  • nassau-county
  • national
  • new-york
  • north-america
  • suffolk-county
  • united-states
  • upper-glacial-aquifer
  • usgs
  • usgs-5995caeae4b0fe2b9fea76a6
  • water-level
  • water-table-contours
isopen False
license_id notspecified
license_title License not specified
maintainer Jason S. Finkelstein
maintainer_email jfinkels@usgs.gov
metadata_created 2025-11-22T04:02:35.171486
metadata_modified 2025-11-22T04:02:35.171490
notes 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 2016. Contours were constructed at a scale of 1:125,000 from water-level data collected at 276 groundwater monitoring wells. The water table altitude contours were digitized and compared to 1997, 2006, 2010 and 2013 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 3398.
num_resources 2
num_tags 25
title Water Table Contours in the Upper Glacial and Magothy Aquifers, April-May 2016