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Explore Search: Weighted regressions on time, discharge and season (WRTDS)

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Data Release
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Long-term water-quality trends for rivers and streams within the contiguous United States using Weighted Regressions on Time, Discharge, and Season (WRTDS)

Data Release
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Water-quality trends for rivers and streams in the Delaware River Basin using Weighted Regressions on Time, Discharge, and Season (WRTDS) models, Seasonal Kendall Trend (SKT) tests, and multisource data, Water Year 1978-2018

Data Release
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Streamflow, Dissolved Organic Carbon, and Nitrate Input Datasets and Model Results Using the Weighted Regressions on Time, Discharge, and Season (WRTDS) Model for Buck Creek Watersheds, Adirondack Park, New York, 2001 to 2021

publication
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Weighted regressions on time, discharge, and season (WRTDS), with an application to Chesapeake Bay River inputs

Data Release
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Water-quality and streamflow datasets used in Weighted Regressions on Time, Discharge, and Season (WRTDS) models to determine trends in the Nation’s rivers and streams, 1972-2017

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

Water-quality and streamflow datasets used in the Weighted Regressions on Time, Discharge, and Season (WRTDS) models to determine trends in the Nations rivers and streams, 1972-2012

Data Release
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Water quality modeling results of total phosphorus for the lower Boise River near Parma, Idaho 2002 - 2021

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

Water-quality trends and trend component estimates for the Nation's rivers and streams using Weighted Regressions on Time, Discharge, and Season (WRTDS) models and generalized flow normalization, 1972-2012

Data Release
USGS

Streamflow input datasets and model results using the Weighted Regressions on Time, Discharge, and Season (WRTDS) Models to estimate total organic carbon and other constituent concentrations in eight rivers in Connecticut, water years 1973 to 2019

Data Release
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Streamflow and Dissolved Organic Carbon Input Datasets and Model Results Using the Weighted Regressions on Time, Discharge, and Season (WRTDS) Model for Sleepers River W9 in Vermont, 1991 to 2018 (version 2.0, August 2022): U.S. Geological Survey Data Rel

Software Release
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EGRET

Data Release
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Input Files and WRTDS Model Output for the two major tributaries of Lake Koocanusa

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

Annual Nutrient Loads at Illinois EPA Ambient Water Quality Monitoring Network Sites, Water Years 1976–2021

publication
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Suspended-sediment concentrations and loads in the lower Mississippi and Atchafalaya rivers decreased by half between 1980 and 2015

Data Release
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WRTDS annual concentrations, loads and statistical trend likelihoods for sites in the Spokane River watershed, water years 1990-2018

staff profile
Stream in Tennessee forrest

Jennifer Murphy

Data Release
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Nutrient and Sediment Concentrations, Loads, and Yields in the Upper Macoupin Creek Watershed, Water Years 2018–2021

publication
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Estimation bias in water-quality constituent concentrations and fluxes: A synthesis for Chesapeake Bay rivers and streams

publication
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A bootstrap method for estimating uncertainty of water quality trends

Data Release
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Data to Incorporate Water Quality Analysis into Navigation Assessments as Demonstrated in the Mississippi River Basin

publication
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Spatial and temporal patterns of dissolved organic matter quantity and quality in the Mississippi River Basin, 1997–2013

Data Release
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Annual estimates of suspended-sediment concentration and load to support trend analysis on the Mississippi River and Atchafalaya River, 1980-2015

Data Release
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WRTDS-K nutrient and sediment loads at Illinois EPA Ambient Water Quality Monitoring Network sites, from WY 1978 through 2020

Data Release
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Input data and results of WRTDS models and seasonal rank-sum tests to determine trends in the quality of water in New Jersey streams, water years 1971-2011

publication
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River water-quality concentration and flux estimation can be improved by accounting for serial correlation through an autoregressive model

publication
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An approach for decomposing river water-quality trends into different flow classes

Data Release
USGS

Nitrogen concentrations and loads and seasonal nitrogen loads in selected Long Island Sound tributaries, water years 1995-2016

Research
Data Nutrient

USGS Enhances Statistical Techniques to Assess Water-Quality Trends

Data Release
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Calcium, magnesium and total dissolved solids data as well as modeled salinity and mass balance estimates for Lake Powell, 1952-2017