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Water Quality

The New England Water Science Center collects water-quality data and conducts assessments and research on the quality of rivers, lakes, estuaries, and groundwater. This information is used to understand the status and trends in water-quality conditions throughout New England and the suitability of those resources to meet water use and ecosystem demands. 

Filter Total Items: 20

Base-Flow Water Quality Sampling in Small Basins Draining to Long Island Sound

During the past 20 years, nitrogen loads to Long Island Sound (LIS) have been substantially reduced in large watersheds affected by municipal wastewater loads.
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Base-Flow Water Quality Sampling in Small Basins Draining to Long Island Sound

During the past 20 years, nitrogen loads to Long Island Sound (LIS) have been substantially reduced in large watersheds affected by municipal wastewater loads.
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Research on Per- and Polyfluoroalkyl Substances (PFAS) in the New England Water Science Center

Per- and polyfluoroalkyl substances (PFAS) are a diverse group of over 4,000 different compounds. Since the 1940s, PFAS have been manufactured and used around the globe, including in the United States. PFAS are resistant to chemical and thermal breakdown and impart stain and water-resistance properties, making them useful for a variety of commercial applications, but also persistent in the...
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Research on Per- and Polyfluoroalkyl Substances (PFAS) in the New England Water Science Center

Per- and polyfluoroalkyl substances (PFAS) are a diverse group of over 4,000 different compounds. Since the 1940s, PFAS have been manufactured and used around the globe, including in the United States. PFAS are resistant to chemical and thermal breakdown and impart stain and water-resistance properties, making them useful for a variety of commercial applications, but also persistent in the...
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Environmental streamflows in the United States: historical patterns and predictions

The term environmental streamflows refers to the magnitude, frequency, seasonal timing, duration, and rate of change of streamflows needed to sustain freshwater and estuary ecosystems and human wellbeing. It is important that environmental streamflow assessments by water managers consider changes in climate, land use, and water management; this cannot be done effectively without understanding...
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Environmental streamflows in the United States: historical patterns and predictions

The term environmental streamflows refers to the magnitude, frequency, seasonal timing, duration, and rate of change of streamflows needed to sustain freshwater and estuary ecosystems and human wellbeing. It is important that environmental streamflow assessments by water managers consider changes in climate, land use, and water management; this cannot be done effectively without understanding...
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Water Quality Monitoring of Merrimack River Watershed

The U.S. Geological Survey (USGS), in cooperation with the Massachusetts Department of Environmental Protection (MassDEP), is currently conducting a 4-year water-quality investigation in the lower portion of the Merrimack River watershed, April 2020 – October 2024.
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Water Quality Monitoring of Merrimack River Watershed

The U.S. Geological Survey (USGS), in cooperation with the Massachusetts Department of Environmental Protection (MassDEP), is currently conducting a 4-year water-quality investigation in the lower portion of the Merrimack River watershed, April 2020 – October 2024.
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Water Quality Sampling in the Tributaries of the Long Island Sound

Coastal estuaries in southern New England and New York show the effects of excess nutrients and coastal eutrophication. These include excessive growth of macroalgae, excessive blooms of phytoplankton, oxygen depletion, hypoxia and deteriorated substrates. State and Federal regulators have responded to these nutrient-caused impairments by requiring more stringent permit limits for National...
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Water Quality Sampling in the Tributaries of the Long Island Sound

Coastal estuaries in southern New England and New York show the effects of excess nutrients and coastal eutrophication. These include excessive growth of macroalgae, excessive blooms of phytoplankton, oxygen depletion, hypoxia and deteriorated substrates. State and Federal regulators have responded to these nutrient-caused impairments by requiring more stringent permit limits for National...
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Chloride Data for Streams in Connecticut, Massachusetts, and Rhode Island

As part of water-quality data collection activities in New England, water samples are analyzed for chloride in monitoring networks and projects across Connecticut, Massachusetts, and Rhode Island. Chloride is of interest because high concentrations may affect aquatic life in streams or affect water quality of reservoirs and aquifers used for drinking water.
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Chloride Data for Streams in Connecticut, Massachusetts, and Rhode Island

As part of water-quality data collection activities in New England, water samples are analyzed for chloride in monitoring networks and projects across Connecticut, Massachusetts, and Rhode Island. Chloride is of interest because high concentrations may affect aquatic life in streams or affect water quality of reservoirs and aquifers used for drinking water.
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Embayment Monitoring to Support Nutrient Management Activities in Connecticut for the Long Island Sound

The USGS, in cooperation with the Connecticut Department of Energy and Environmental Protection will be collecting water-quality and hydrologic data at four embayments from April 2021 to March 2024: Mystic, Norwalk, Saugatuck, and Sasco-Southport complex.
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Embayment Monitoring to Support Nutrient Management Activities in Connecticut for the Long Island Sound

The USGS, in cooperation with the Connecticut Department of Energy and Environmental Protection will be collecting water-quality and hydrologic data at four embayments from April 2021 to March 2024: Mystic, Norwalk, Saugatuck, and Sasco-Southport complex.
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Transportation-Related Water Projects in New England

The New England Water Science Center collects data and does interpretive studies on hydrology, hydraulics, and water quality in cooperation with the Federal Highway Administration and State Departments of Transportation (DOTs) in New England and other states.
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Transportation-Related Water Projects in New England

The New England Water Science Center collects data and does interpretive studies on hydrology, hydraulics, and water quality in cooperation with the Federal Highway Administration and State Departments of Transportation (DOTs) in New England and other states.
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Measurement and Modeling of Nitrogen Discharge to Cape Cod Rivers to Identify High-Priority Nitrogen Reduction Areas

In 2019 USGS and the U.S. Environmental Protection Agency (EPA) Region 1 initiated a study to measure spatial and temporal patterns of nitrogen loading in selected rivers on Cape Cod and then determine whether the measured patterns can be related to nitrogen source areas in the surrounding watersheds to prioritize nitrogen reduction efforts. Study results will improve understanding of nitrogen...
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Measurement and Modeling of Nitrogen Discharge to Cape Cod Rivers to Identify High-Priority Nitrogen Reduction Areas

In 2019 USGS and the U.S. Environmental Protection Agency (EPA) Region 1 initiated a study to measure spatial and temporal patterns of nitrogen loading in selected rivers on Cape Cod and then determine whether the measured patterns can be related to nitrogen source areas in the surrounding watersheds to prioritize nitrogen reduction efforts. Study results will improve understanding of nitrogen...
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Assessment of Hydrologic Conditions in the Three Bays Watershed in Support of Nutrient Management Activities, Cape Cod, Massachusetts

In 2019 the USGS began a partnership with the U.S. Environmental Protection Agency (EPA) Office of Research and Development (ORD), EPA Region 1 Southeast New England Program for Coastal Watershed Restoration (SNEP), Barnstable Clean Water Coalition (BCWC), and other stakeholders to conduct hydrologic monitoring and assessment in support of multifaceted nutrient-management activities in the Three...
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Assessment of Hydrologic Conditions in the Three Bays Watershed in Support of Nutrient Management Activities, Cape Cod, Massachusetts

In 2019 the USGS began a partnership with the U.S. Environmental Protection Agency (EPA) Office of Research and Development (ORD), EPA Region 1 Southeast New England Program for Coastal Watershed Restoration (SNEP), Barnstable Clean Water Coalition (BCWC), and other stakeholders to conduct hydrologic monitoring and assessment in support of multifaceted nutrient-management activities in the Three...
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Development of a Water Quality Monitoring Strategy for Mount Hope Bay and the Taunton River Estuary, Massachusetts

The U.S. Geological Survey (USGS) and Massachusetts Department of Environmental Protection (MassDEP) are collaborating on a study to develop a water quality monitoring strategy for Mount Hope Bay and the Taunton River Estuary.
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Development of a Water Quality Monitoring Strategy for Mount Hope Bay and the Taunton River Estuary, Massachusetts

The U.S. Geological Survey (USGS) and Massachusetts Department of Environmental Protection (MassDEP) are collaborating on a study to develop a water quality monitoring strategy for Mount Hope Bay and the Taunton River Estuary.
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Water Quality Sampling and Monitoring of the Pawcatuck River Watershed

The Pawcatuck River and the Pawcatuck River Estuary and Little Narragansett Bay form part of the boundary between the States of Connecticut and Rhode Island. Both states have identified water quality impairments within these waters related to nutrients (insufficient oxygen) and bacteria. Studies of the eutrophication potential of Long Island Sound embayments have identified that the Pawcatuck...
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Water Quality Sampling and Monitoring of the Pawcatuck River Watershed

The Pawcatuck River and the Pawcatuck River Estuary and Little Narragansett Bay form part of the boundary between the States of Connecticut and Rhode Island. Both states have identified water quality impairments within these waters related to nutrients (insufficient oxygen) and bacteria. Studies of the eutrophication potential of Long Island Sound embayments have identified that the Pawcatuck...
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