Coram & Milford, Lead (Supervisory Hydrologist)
New York Water Science Center
Email:
mcomo@usgs.gov
Office Phone:
631-736-0783
Fax:
631-736-4283
ORCID:
0000-0002-7911-5390
Location
Coram NY WSC Field Office
2045 Route 112
Bldg. 4
Coram
, NY
11727
US
Supervisor:
Guy M Foster
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During October-November 2017 twelve time domain electromagnetic (TDEM) surveys were collected in Nassau and Queens County. The data were collected to estimate the extent of saltwater intrusion in support of the Long Island Groundwater Sustainability Project in cooperation with the New York State Department of Environmental Conservation. In the TDEM method, an electrical current is run through a wire in a transmitter loop, which in turn produces a magnetic field. The strength of the magnetic field is proportional to the strength of the electrical current. The current is rapidly shut off and due to Faraday’s Law, a secondary current is induced. The strength of the secondary current is proportional to the rate of...
Categories: Data;
Tags: Electromagnetic surveying,
Geophysics,
Geophysics,
Geophysics,
Groundwater, All tags...
Hydrology,
Nassau County,
New York,
Queens County,
Resistivity,
Salinity,
Saltwater Intrusion,
Saltwater Intrusion,
Surface Geophysics,
USGS Science Data Catalog (SDC),
Water Resources, Fewer tags
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This data release contains geospatial data defining estimates of the depth to water and water-table altitude in the upper glacial and Magothy Aquifers, the potentiometric surface of the confined Magothy and Jameco Aquifers, and the potentiometric surface of the Lloyd and North Shore Aquifers on Long Island, New York. Estimates are based on 502 water-level measurements made in wells across Long Island during March-April 2006. Water-table contours were interpolated using measurements from 341 wells screened in the upper glacial aquifer or shallow Magothy Aquifer. Potentiometric-surface contours in the confined Magothy and hydraulically connected Jameco Aquifer were interpolated using measurements from 102 wells. Potentiometric-surface...
Tags: Contours,
GW or SW,
Geospatial Applications,
Groundwater,
Groundwater Monitoring, All tags...
Groundwater and Streamflow Information,
Hydrology,
Kings County,
Levels,
Lloyd Aquifer,
Long Island,
Magothy Aquifer,
Nassau County,
New York,
Queens County,
Real-time Monitoring,
Suffolk County,
USGS,
USGS Science Data Catalog (SDC),
Upper Glacial Aquifer,
Water,
Water level,
Water table contours, Fewer tags
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Background Borehole drilling and well-installation are costly procedures, and securing funding for new well installation for the sake of research is often difficult.The Suffolk County Water Authority (SCWA) maintains a large network of deep wells for public supply that is constantly being upgraded as water demands increase. During the drilling process, contractors record drillers’ logs and collect cores and, subsequently, often perform borehole geophysical logging for determination of aquifer properties. However, although these data may suffice for selecting a screen zone, they are lacking in more detailed hydrologic information necessary for a better understanding of Suffolk County’s hydrologic...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Borehole Geophysics,
Borehole Geophysics,
Borehole Geophysics,
Cooperative Water Program,
GW or SW, All tags...
GW or SW,
GW or SW,
Geophysics,
Geophysics,
Hydrogeologic Characterization,
Hydrogeologic Characterization,
Hydrogeologic Characterization,
New York,
Suffolk County,
USGS New York Water Science Center,
WSC,
deep-borehole drilling, Fewer tags
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The U.S. Geological Survey (USGS) is providing online maps of water-table and potentiometric-surface altitude in the upper glacial, Magothy, Jameco, Lloyd, and North Shore aquifers on Long Island, New York, April–May 2016. Also provided is a depth-to-water map for Long Island, New York, April–May 2016. The USGS makes these maps and geospatial data available as REST Open Map Services (as well as HTTP, JSON, KML, and shapefile), so end-users can consume them on mobile and web clients. A companion report, U.S. Geological Survey Scientific Investigations Map 3398 (Como and others, 2018; https://doi.org/10.3133/sim3398) further describes data collection and map preparation and presents 68x22 in. Portable Document...
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Using a combination of public and proprietary historical construction test borings, recent exploration drilling, USGS observation wells, outcrops, and seismic measurements, a series of geospatial overlays for bedrock elevation and overburden thickness were created for the Five Boroughs of New York City, New York. Rasters were interpolated from a point elevation data set and refined using published and interpretive bedrock contours, and interpreted glacial valleys and faults. Contours for bedrock elevation were generated at 100-ft contour intervals and smoothed. This data release includes shapefiles containing the input point elevation features and output contours, and rasters of interpolated bedrock elevation and...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Aquifer Mapping,
Basin & Hydrogeologic Characterization,
Bedrock geologic units,
Bronx County,
Geospatial Applications, All tags...
Groundwater,
Kings County,
New York,
New York City,
New York County,
Queens County,
Richmond County,
USGS Science Data Catalog (SDC),
United States,
biota, Fewer tags
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