{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Michael D. Como", "hasEmail": "mailto:mcomo@usgs.gov"}, "description": "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.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/F7RV0KSD", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.56f59803e4b06639d52a3a1d.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_56f59803e4b06639d52a3a1d", "keyword": ["Contours", "Groundwater", "Hydrology", "Kings County", "Levels", "Long Island", "Magothy Aquifer", "Nassau County", "New York", "Queens County", "Suffolk County", "USGS", "USGS:56f59803e4b06639d52a3a1d", "Upper Glacial Aquifer", "Water level", "environment", "geoscientificInformation", "inlandWaters", "water table contours"], "modified": "2026-04-30T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-74.012160, 40.586776, -71.859336, 41.110762", "theme": ["geospatial"], "title": "Upper Glacial and Magothy Aquifers: Contours of Water Table Altitudes, April-May 2013"}