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Explore Search: Eutrophication

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publication
image of publications layered on a wooden table

Use of cotton gin trash to enhance denitrification in restored forested wetlands

publication
image of publications layered on a wooden table

Manganese concentration in lobster (Homarus americanus) gills as an index of exposure to reducing conditions in western Long Island Sound

publication
image of publications layered on a wooden table

Manganese concentration in lobster (Homarus americansus) gills as an index of exposure to reducing conditions in Western Long Island Sound

publication
image of publications layered on a wooden table

Hydrogeologic setting and ground water flow beneath a section of Indian River Bay, Delaware

publication
image of publications layered on a wooden table

Trace-element concentrations and transport in the Coeur d'Alene river, Idaho, water years 1993-94

publication
image of publications layered on a wooden table

Geohydrology of the Flints Pond Aquifer, Hollis, New Hampshire

Project
Green River near Colrain, Massachusetts

EPA National Low Flows

publication
image of publications layered on a wooden table

Hydrologic budget for Eagle Lake near Willmar, Minnesota

Project
USGS boat crew on Merrimack River, Massachusetts

Monitoring Merrimack River Mainstem and Tidal Reaches in Massachusetts to Evaluate Water Quality Conditions, May to September 2020

publication
image of publications layered on a wooden table

Effects of watershed land use on nitrogen concentrations and δ15 nitrogen in groundwater

publication
image of publications layered on a wooden table

Atmospheric nitrogen in the Mississippi River Basin: Amissions, deposition and transport

publication
image of publications layered on a wooden table

Ground-water discharge and nitrate loadings to the coastal bays of Maryland

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Paleoecological data from The Loch and Sky Pond, Rocky Mountain National Park

Research
Model development output

Estuarine Processes Model Development

Center News
A map of Connecticut with certain sections colored in blue, green and yellow.

USGS Calculates Groundwater-Transported Nitrogen into Long Island Sound from Connecticut

Podcasts
Nima Pahlevan - Eyes on Earth podcast

Eyes on Earth Episode 10 – Landsat and Water Quality
Project
Continuous water quality monitor that is deployed off a bridge in Westerly RI, just upstream of the gage.

Water Quality Sampling and Monitoring of the Pawcatuck River Watershed

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Stable Isotopes of Fish, Invertebrates, and Vegetation in the Northern Sacramento-San Joaquin Delta, California, 2022-2024

Center News
Aerial view of a sewage treatment plant.

New release: User-friendly Point-Source Load Estimation Tool (PSLoadEsT)

Research
Microcystin

Detecting Sublethal Effects of Harmful Algal Blooms in Mammalian and Avian Cells

Project
man in flourescent yellow pfd jacket workin with bottles of water

Mohawk River Basin Water Quality

General
A bridge board sampler used for collecting water-quality samples set up at Merrimack River, Lowell, Massachusetts

Water-Quality Projects

Data Release
Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

Benthic Algal Community Composition in the Laurentian Great Lakes (2024)

Center News
Winter water-quality sampling in the Connecticut River, CT

"Legacy nitrogen" contributing to upward nitrate trends in streams

Project
Surface runoff flows from a cornfield in the Sugar Creek basin IN

Transport and Fate of Nutrients

Project
Drillers using a sonic drilling rig to install monitoring wells in Barnstable, Massachusetts

Hydrologic Monitoring in the Three Bays Watershed in Support of Nutrient Management Activities, Cape Cod, Massachusetts

Photography
Ryan is crouched down setting up gear on the ground with a large USCG sailboat in the background

Ryan Bottorff servicing a continuous water quality monitor at US Coast Guard Academy on the Thames River in Groton, CT
Science Animations
The Animated Nitrogen Cycle - a diagram with many arrows and elements are shown.

The Animated Nitrogen Cycle (AD)
Project
Well installation using a Geoprobe drilling rig

Assessment of Hydrologic and Water-Quality Changes in Shallow Groundwater Beneath a Coastal Neighborhood Being Converted from Septic Systems to Municipal Sewers

Project
Mill Creek Watershed, Wellfleet and Truro, Massachusetts

Groundwater and Surface-Water Monitoring in the Mill Creek Watershed, Wellfleet and Truro, Massachusetts

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