New York Water Science Center

Borehole Geophysics

Filter Total Items: 17
Date published: June 3, 2021
Status: Active

Water-Resource and Road-Condition Monitoring of Alternative Treatments for Road Deicing

Introduction The New York State Department of Transportation (NYSDOT) is evaluating alternative treatments for road deicing with the goal of reducing the impact of this activity on the State’s water resources. The NYSDOT has requested support from the U. S. Geological Survey (USGS) in monitoring the effects of these alternative treatments on the water resources. In the past, the USGS has...

Date published: May 11, 2021
Status: Active

Geophysical Methods Capabilities

Geophysics GEOPHYSICAL METHODS CAPABILITIES The New York Water Science Center (NY WSC) makes extensive use of geophysical methods in hydrologic investigations and research in cooperation with local, State, and Federal partners. The NY WSC staff has many years of experience in collecting and interpreting surface and borehole geophysical data, and applying the results to provide a better...

Contacts: John Williams
Date published: December 20, 2018
Status: Active

Borehole Geophysics

Borehole geophysics is the science of recording and analyzing measurements of physical properties made in wells or test holes. Probes that measure different properties are lowered into the borehole to collect continuous or point data that is graphically displayed as a geophysical log. Multiple logs typically are collected to take advantage of their synergistic nature--much more can be learned...

Date published: March 1, 2018
Status: Active

Groundwater Sustainability of the Long Island Aquifer System

Groundwater sustainability can be best defined as the development and use of groundwater in a manner that can be maintained for an indefinite time without causing unacceptable environmental or socioeconomic consequences. Informed management of the Long Island aquifer system can help ensure a regionally sustainable groundwater resource. The USGS and New York State Department of Environmental...

Date published: February 26, 2018
Status: Active

Groundwater-Flow Modeling - Long Island, New York


Numerical models provide a means to synthesize existing hydrogeologic information into an internally consistent mathematical representation of a real system or process, and thus are useful tools for testing and improving...

Date published: November 17, 2017
Status: Active

Our Science

The New York Water Science Center conducts research and investigations used across a broad range of industries and other services.

Contacts: Gary Wall
Date published: May 30, 2017

Long Island Hydrogeologic Units

Long Island’s aquifer system consists of a seaward-dipping wedge of mostly unconsolidated stratified sediments comprised of sand, gravel, silt and clay.

Contacts: Jack Monti
Date published: April 4, 2017

Water Issues and Marcellus Shale Gas Development in New York

The Marcellus Shale of the Appalachian Basin is one of the largest unconventional gas plays in the United States. 

Contacts: John Williams
Date published: April 3, 2017
Status: Active

Delineation of the Saltwater-Freshwater Interface at Selected Well Locations in the Town of Riverhead, NY

Problem The Town of Riverhead in the northeastern Suffolk County includes rural farmland and suburbs and is bounded by the Long Island Sound to the north and Peconic Bay to the southeast. Riverhead’s close proximity to saline embayments and its location along the northeastern discharge area for Long Island’s groundwater flow system makes it vulnerable to saltwater intrusion. Several public-...

Contacts: Frederick Stumm
Date published: March 18, 2016
Status: Active

Surface-Geophysical Surveys and Well Network for Monitoring Aquifer Salinity in the Genesee River Valley, Livingston County, New York

Background and Problem The Retsof salt mine in the Genesee River valley, Livingston County, New York flooded after roof collapses in 1994 created two rubble chimneys in overlying bedrock that intersected a confined aquifer in the basal glacial-drift deposits (figs. 1 and 2). Groundwater flowed downward through the rubble chimneys causing widespread drawdown in the lower confined aquifer until...

Contacts: John Williams
Date published: October 20, 2015
Status: Active

Hydrogeology and Water Quality of the North Shore Aquifer in Locust Valley, Town of Oyster Bay, New York

Problem Perchlorate detected in a shallow supply well within the southern portion of the Locust Valley Water District (LVWD) has prompted interest in determining the possible existence of a deeper confined aquifer (North Shore Aquifer) that may be protected from shallow contamination (fig. 1). Previous USGS studies in this area indicate the northern part of Nassau County has a complex...

Date published: August 20, 2015
Status: Active

Hydrogeology of a Ground-Water Contamination Site, Cayuga County, New York

Problem - The U.S. Geological Survey (USGS) provided technical assistance between 2001 and 2013 to the U.S. Environmental Protection Agency (EPA) in an investigation of the presence of chlorinated solvents (trichloroethylene and degradates) in ground water in the Middle-to-Lower Devonian and Upper Silurian carbonate bedrock southwest of Auburn in Cayuga County, N.Y. Pieziometric and water-qu...

Contacts: John Williams, Alton Anderson, David A Eckhardt