Lloyd and North Shore Aquifers: Potentiometric Surface Contours, April-May 2016
This polyline shapefile consists of digital contours that represent the potentiometric-surface altitude of water in the Lloyd and contiguous North Shore aquifer beneath Nassau and Suffolk Counties, Long Island, New York. The U.S. Geological Survey constructed a potentiometric-surface altitude map using ground-water levels measured in the Lloyd and North Shore aquifers during the spring of 2016. Contours were constructed at a scale of 1:125,000 from water-level data collected at 60 groundwater monitoring wells. The potentiometric-surface altitude contours were digitized and compared to 1997, 2006, 2010 and 2013 potentiometric-surface altitude maps. The contours range from -5 to 60 feet at 5 foot intervals above and below the National Geodetic Vertical Datum of 1929. This polyline shapefile is a digital representation of the potentiometric-surface contours presented in sheet 3 of Scientific Investigations Map 3398.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Jason S. Finkelstein",
"@type": "vcard:Contact",
"hasEmail": "mailto:jfinkels@usgs.gov"
}
|
| description | This polyline shapefile consists of digital contours that represent the potentiometric-surface altitude of water in the Lloyd and contiguous North Shore aquifer beneath Nassau and Suffolk Counties, Long Island, New York. The U.S. Geological Survey constructed a potentiometric-surface altitude map using ground-water levels measured in the Lloyd and North Shore aquifers during the spring of 2016. Contours were constructed at a scale of 1:125,000 from water-level data collected at 60 groundwater monitoring wells. The potentiometric-surface altitude contours were digitized and compared to 1997, 2006, 2010 and 2013 potentiometric-surface altitude maps. The contours range from -5 to 60 feet at 5 foot intervals above and below the National Geodetic Vertical Datum of 1929. This polyline shapefile is a digital representation of the potentiometric-surface contours presented in sheet 3 of Scientific Investigations Map 3398. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/F7G15Z9T",
"mediaType": "application/http",
"description": "Landing page for access to the data"
},
{
"@type": "dcat:Distribution",
"title": "Original Metadata",
"format": "XML",
"mediaType": "text/xml",
"description": "The metadata original format",
"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.5995ca92e4b0fe2b9fea7698.xml"
}
]
|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_5995ca92e4b0fe2b9fea7698 |
| keyword |
[
"Contours",
"Groundwater",
"Hydrology",
"Levels",
"Lloyd aquifer",
"Long Island",
"Nassau County",
"New York",
"North Shore Aquifer",
"Potentiometric surface contours",
"Suffolk County",
"USGS",
"USGS:5995ca92e4b0fe2b9fea7698",
"Water level",
"environment",
"geoscientificInformation",
"inlandWaters"
]
|
| modified | 2026-04-30T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -73.77461127, 40.546223781, -72.550291486, 40.992866624 |
| theme |
[
"geospatial"
]
|
| title | Lloyd and North Shore Aquifers: Potentiometric Surface Contours, April-May 2016 |
