New York Water Science Center

Groundwater Monitoring

Filter Total Items: 60
Date published: October 15, 2021
Status: Active

Geohydrology of the Valley‐fill Aquifer in the Lower Fall Creek Valley, Town of Dryden, Tompkins County, New York

PROBLEM The valley‐fill aquifer in the lower Fall Creek valley (designated as aquifer 4, fig. 1), within the Towns of Dryden and Groton, was mapped by Miller (2000) and identified as one of 17 unconsolidated aquifers in Tompkins County that need to be studied in more detail. The east end of the valley (near the Tompkins and Cortland County border) is on the backside of a large morainal plug,...

Date published: May 24, 2019
Status: Active

Groundwater-Quality of Nassau County, Long Island, New York

Problem Statement There are over 1.3 million residents in Nassau County that rely on groundwater as their sole source of potable drinking water. The mixed land uses (residential, commercial, industrial, agricultural, and recreational) of Nassau County contribute point and non-point sources of aquifer contamination. Nassau County water purveyors currently operate supply wells screened in the...

Contacts: Irene J Fisher
Date published: October 10, 2018
Status: Active

Hydrogeologic and Geochemical Assessment of the Effects of Leakage from the Catskill and Delaware Aqueducts on the Local Bedrock and Overburden Aquifers in Southeastern New York

PROBLEM As part of an effort to sustain a viable water-supply system for 8 million residents in New York City, and 1 million other residents in upstate New York that rely on City water, the New York City Department of Environmental Protection (NYCDEP) has requested a multi-disciplinary study by the U.S. Geological Survey (USGS) to determine the source(s) of water to surface-water sites (...

Date published: April 19, 2018
Status: Active

Current Water Conditions in New York

• National Water Information System (NWIS):   Find water-resources data collected at approximately 1.5 million sites, using menu-based and map-based front ends.
• WaterWatch:  View maps, graphs, and tables describing real-time, recent, and past streamflow conditions for the United States. 

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 28, 2018
Status: Active

Hydrogeologic-Framework Mapping - Long Island, New York

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Long Island is underlain by unconsolidated Holocene deposits, glacial deposits of Pleistocene age, and coastal-plain deposits  of Late Cretaceous age. These sediments consist of gravel, sand, silt, and clay underlain by...

Date published: February 28, 2018
Status: Active

Saltwater-Interface Mapping - Long Island, New York

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Saltwater intrusion is the most common type of water-quality degradation in coastal-plain aquifers. In coastal areas, the hydraulic head under predevelopment (nonpumping) conditions is higher on land than in the surrounding...

Date published: February 26, 2018
Status: Active

Groundwater-Flow Modeling - Long Island, New York

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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: February 25, 2018
Status: Active

Groundwater Sustainability - Long Island, New York

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Groundwater sustainability can best be 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...

Date published: December 11, 2017
Status: Active

Monthly Hydrologic Conditions for New York

The U.S. Geological Survey New York Water Science Center’s monthly summary reports and tables of hydrologic conditions for surface and ground water list the station, county, period of record, and several statistics, including color-coded percent exceedance* categories based on average monthly conditions for the period of record at each station.

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: November 1, 2017
Status: Active

U.S. Geological Survey Hydrologic Monitoring on Long Island, New York

The U.S. Geological Survey (USGS) is a science organization that provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the impacts of climate and land-use change, and the core science systems that help us provide timely, relevant, and usable information.