Item talk:Q56826

{"@context": "https://schema.org", "@type": "CreativeWork", "additionalType": "USGS Numbered Series", "name": "Slug-test analysis of selected wells at an earthen dam site in southern Westchester County, New York", "identifier": [{"@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "ofr20191102", "url": "https://pubs.usgs.gov/publication/ofr20191102"}, {"@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70205362}, {"@type": "PropertyValue", "propertyID": "DOI", "value": "10.3133/ofr20191102", "url": "https://doi.org/10.3133/ofr20191102"}], "inLanguage": "en", "isPartOf": [{"@type": "CreativeWorkSeries", "name": "Open-File Report"}], "datePublished": "2019", "dateModified": "2022-04-21", "abstract": "In 2005, the U.S. Geological Survey began a cooperative study with the New York City Department of Environmental Protection to characterize the local groundwater-flow system and identify potential sources of seeps on the southern embankment of the Hillview Reservoir in southern Westchester County, New York. The earthen embankment comprises low-permeability glacial clays that were excavated from the site and rest on a veneer of low-permeability glacial deposits that overlie crystalline bedrock. At least two groundwater-flow zones\u2014one shallow and the other deep\u2014overlie the bedrock at the reservoir. As part of the study, slug-test data from 38 screened wells were analyzed to determine the hydraulic conductivity of the sediments in the groundwater-flow zones. Slug-test data were collected from 12 wells at the Hillview Reservoir during August 2007 and from 25 wells at the reservoir and 1 monitoring well south of the reservoir in northern Bronx County in June 2012.Hydraulic conductivity values at the reservoir ranged from 0.0012 to 2 feet per day. On the southern embankment, hydraulic conductivity ranged from 0.0026 to 1 foot per day for wells screened in the shallow saturated zone; 0.0012 to 2 feet per day for wells screened in the deep saturated zone; and 0.021 to 0.27 foot per day for wells screened in the toe of the southern embankment, where the deep and shallow saturated zones coalesce. A hydraulic conductivity of 0.016 foot per day was determined for a well partially screened in the crystalline-bedrock aquifer, which potentially indicates an interconnection of transmissive fractures near the bedrock surface. The results of four slug-out tests are also included in this report to quality assure the hydraulic conductivity estimates from the slug-in test analysis. The results of the four slug-out tests were within 8 percent of slug-in test results, with an average of less than 2 percent.", "description": "Report: vi, 14 p.; Data Release", "publisher": {"@type": "Organization", "name": "U.S. Geological Survey"}, "author": [{"@type": "Person", "name": "Capurso, William D.", "givenName": "William D.", "familyName": "Capurso", "identifier": {"@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0003-1182-2846", "url": "https://orcid.org/0000-0003-1182-2846"}, "affiliation": [{"@type": "Organization", "name": "New York Water Science Center", "url": "https://www.usgs.gov/centers/new-york-water-science-center"}]}, {"@type": "Person", "name": "Chu, Anthony achu@usgs.gov", "givenName": "Anthony", "familyName": "Chu", "email": "achu@usgs.gov", "identifier": {"@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-8623-2862", "url": "https://orcid.org/0000-0001-8623-2862"}, "affiliation": [{"@type": "Organization", "name": "New York Water Science Center", "url": "https://www.usgs.gov/centers/new-york-water-science-center"}]}, {"@type": "Person", "name": "Noll, Michael L. mnoll@usgs.gov", "givenName": "Michael L.", "familyName": "Noll", "email": "mnoll@usgs.gov", "identifier": {"@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0003-2050-3134", "url": "https://orcid.org/0000-0003-2050-3134"}, "affiliation": [{"@type": "Organization", "name": "New York Water Science Center", "url": "https://www.usgs.gov/centers/new-york-water-science-center"}]}], "funder": [{"@type": "Organization", "name": "New York Water Science Center", "url": "https://www.usgs.gov/centers/new-york-water-science-center"}], "spatialCoverage": [{"@type": "Place", "additionalType": "country", "name": "United States", "url": "https://geonames.org/6252001"}, {"@type": "Place", "additionalType": "state", "name": "New York", "url": "https://geonames.org/5128638"}, {"@type": "Place", "additionalType": "state", "name": "Westchester County", "url": "https://geonames.org/5144050"}, {"@type": "Place", "geo": [{"@type": "GeoShape", "additionalProperty": {"@type": "PropertyValue", "name": "GeoJSON", "value": {"type": "FeatureCollection", "features": [{"type": "Feature", "properties": {}, "geometry": {"type": "Polygon", "coordinates": [[[-73.87674808502196, 40.90551783054535], [-73.86099815368652, 40.90551783054535], [-73.86099815368652, 40.91821491609591], [-73.87674808502196, 40.91821491609591], [-73.87674808502196, 40.90551783054535]]]}}]}}}, {"@type": "GeoCoordinates", "latitude": 40.91186637332063, "longitude": -73.86887311935425}]}]}