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Explore Search: discrete samples

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

Passive water quality sampling at discrete vertical intervals to support the development of a conceptual site model development at the Geneva Industries/Fuhrmann Energy Superfund Site, Houston, Texas, 2023

Photography
Scientists collect discrete water quality samples on Folsom Lake, CA

Scientists collect discrete water quality samples on Folsom Lake, CA

Photography
Collecting discrete water quality samples

Collecting discrete water quality samples

Photography
A USGS scientist collecting a discrete water-quality sample

A USGS scientist collecting a discrete water-quality sample

Photography
Hydrologists collect a discrete soil gas sample from soil gas well

Hydrologists collect a discrete soil gas sample from soil gas well

Presentations and Events
Thumbnail for ASIP April 11th webinar

Accessing Samples and Water Quality 4/11/24 Webinar

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

Laboratory Optical Measurements From Discrete Surface Water Samples Collected During Water Quality Mapping Campaigns on the Illinois Waterway and Chicago Area Waterway Systems

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

Water-Quality Data for Discrete Samples and Continuous Monitoring on the Merrimack River, Massachusetts, June to September 2020

Photography
UHU Hydrologic Technicians collecting a discrete water-quality sample using the equal-width-increment-method, this sampling t

UHU Hydrologic Technicians collecting a discrete water-quality sample using the equal-width-increment-method, this sampling technique collects sample volumes proportional to the amount of flow at several equally spaced verticals in the cross section.

publication
image of publications layered on a wooden table

Sampling trace organic compounds in water: a comparison of a continuous active sampler to continuous passive and discrete sampling methods

Photography
Westco discrete nutrient analyzer

Westco discrete nutrient analyzer

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

Occurrence and Concentrations of Trace Elements in Discrete Tapwater Samples Collected in Chicago, Illinois and East Chicago, Indiana, 2017

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

A national harmonized dataset of discrete chlorophyll from lakes and streams (2005-2022)

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

Chemical and Stable Isotope Data for Discrete Water Samples Collected in the Northern Sacramento-San Joaquin Delta, 2011-2012

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

Comparison of methane concentration and stable carbon isotope data for natural samples analyzed by discrete sample introduction module - cavity ring down spectroscopy (DSIM-CRDS) and traditional methods

Project
Kirtland AFB, USGS NMWSC

Discrete Water Quality Sampling in New Mexico

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

Summary of dissolved pesticide concentrations in discrete surface-water samples collected on the islands of Kauai and Oahu between November 21, 2016 and April 29, 2017

publication
image of publications layered on a wooden table

Hydraulically controlled discrete sampling from open boreholes

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

Quality-Assurance and Quality-Control Data for Discrete Water-Quality Samples Collected in McHenry County, Illinois, 2020

Presentations and Events
screenshot of the title slide of a presentation on saline lake ecosystems water budgets

Saline Lake Ecosystems IWAA Fall 2024 Webinar Series: Physical and Chemical Monitoring in Support of Water Budgets of Select Great Basin Saline Lakes

publication
image of publications layered on a wooden table

Variance components estimation for continuous and discrete data, with emphasis on cross-classified sampling designs

publication
image of publications layered on a wooden table

Discrete sample introduction module for quantitative and isotopic analysis of methane and other gases by cavity ring-down spectroscopy

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

Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models at USGS station 01575900, Chiques Creek near Marietta, Pennsylvania, 2021-2023

Featured Films and Shorts
USGS On The Road Season 1 Episode 3 Thumbnail

Powerful Water Samples From Conowingo Dam

publication
image of publications layered on a wooden table

Predictive understanding of stream salinization in a developed watershed using machine learning

Photography
Water quality sampling using a Niskin sampler from the Research Vessel Polaris at sunset on San Francisco Bay.

Water quality sampling on San Francisco Bay

Photography
Cheney Res water samples

Cheney Res water samples

Research
Southeast Alaska Transboundary Map rivers

USGS Transboundary River Monitoring in Southeast Alaska

Photography
View of Essex Island Marina during discrete water quality sample collection at <site ID> location

View of Essex Island Marina during water quality sample collection

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

Discrete Carbonate System Parameter Measurements in Middle Tampa Bay, Florida and the Eastern Gulf of Mexico, USA

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