Water quality and ecology of small streams
USGS Regional Stream Quality Assessment (RSQA)
Modeling contaminant loads in rivers and streams
SPAtially Referenced Regressions On Watershed attributes (SPARROW) models
Research by the USGS National Water Quality Assessment (NAWQA) Project on water quality of rivers and streams covers a broad range of topics, from nonpoint pollution issues to vulnerability of aquatic ecosystems. Dive in and find out more about current water-quality conditions, how and where water quality is changing, and the latest information on pesticides, nutrients, and other contaminants.
The Nation's rivers and streams are a priceless resource—they provide drinking water for a growing population, irrigation for crops, habitat for aquatic life, and countless recreational opportunities.
NAWQA research on surface-water quality is focusing on three areas:
-
current conditions and trends in water quality in the Nation’s rivers and streams;
-
developing models and interactive mappers that estimate the amount of a contaminant transported from inland watersheds to larger water bodies (SPAtially Referenced Regression On Watershed attributes, or SPARROW); and
-
characterizing water quality and ecology in hundreds of small streams across the United States (Regional Stream Quality Assessments; RSQA).
Explore NAWQA science on topics related to water quality in streams and rivers
Relations between land use and surface-water quality
Urban Land Use and Water Quality
Contaminants in surface water
Emerging contaminants (pharmaceuticals, personal-care products, and more)
Sediment-associated contaminants (metals, pesticides, PAHs, and more)
Coal-Tar-Based Pavement Sealcoat, PAHs, and Environmental Health
Relations to aquatic life
NWQP Research on Harmful Algal Blooms (HABs)
Drinking water issues
Drinking Water and Source Water Research
Chloride, Salinity, and Dissolved Solids
Water-Quality Benchmarks for Contaminants
Trends in water quality
Water-Quality Trends from Lake Sediment Cores
How do we do it?
Access USGS publications and manuals on National Water-Quality Project sampling methods.
Looking for information on groundwater quality as well?
Explore these links:
Learn about topics and projects related to surface-water quality.
Access USGS data on surface-water quality and ecology using the links below.
Below, you’ll find the latest in peer-reviewed journal articles and USGS reports on water-quality issues in streams and rivers.
Agriculture — A river runs through it — The connections between agriculture and water quality
Effects of urban multi-stressors on three stream biotic assemblages
Linking the agricultural landscape of the Midwest to stream health with structural equation modeling
Mixed-chemical exposure and predicted effects potential in wadeable southeastern USA streams
Water-quality trends in US rivers: Exploring effects from streamflow trends and changes in watershed management
Nutrient enrichment in wadeable urban streams in the piedmont ecoregion of the southeastern United States
A database of natural monthly streamflow estimates from 1950 to 2015 for the conterminous United States
Understanding the influence of nutrients on stream ecosystems in agricultural landscapes
The Midwest Stream Quality Assessment—Influences of human activities on streams
Relative importance of water-quality stressors in predicting fish community responses in midwestern streams
Juvenile coho salmon growth and health in streams across an urbanization gradient
Assessing the influence of multiple stressors on stream diatom metrics in the upper Midwest, USA
Predictability and selection of hydrologic metrics in riverine ecohydrology
Isotopic tracers in fish in Northeast provide clue to mercury sources
Isotopes of mercury in fish can indicate the source of that mercury, reports a new study from the USGS Regional Stream Quality Assessment.
Research by the USGS National Water Quality Assessment (NAWQA) Project on water quality of rivers and streams covers a broad range of topics, from nonpoint pollution issues to vulnerability of aquatic ecosystems. Dive in and find out more about current water-quality conditions, how and where water quality is changing, and the latest information on pesticides, nutrients, and other contaminants.
The Nation's rivers and streams are a priceless resource—they provide drinking water for a growing population, irrigation for crops, habitat for aquatic life, and countless recreational opportunities.
NAWQA research on surface-water quality is focusing on three areas:
-
current conditions and trends in water quality in the Nation’s rivers and streams;
-
developing models and interactive mappers that estimate the amount of a contaminant transported from inland watersheds to larger water bodies (SPAtially Referenced Regression On Watershed attributes, or SPARROW); and
-
characterizing water quality and ecology in hundreds of small streams across the United States (Regional Stream Quality Assessments; RSQA).
Explore NAWQA science on topics related to water quality in streams and rivers
Relations between land use and surface-water quality
Urban Land Use and Water Quality
Contaminants in surface water
Emerging contaminants (pharmaceuticals, personal-care products, and more)
Sediment-associated contaminants (metals, pesticides, PAHs, and more)
Coal-Tar-Based Pavement Sealcoat, PAHs, and Environmental Health
Relations to aquatic life
NWQP Research on Harmful Algal Blooms (HABs)
Drinking water issues
Drinking Water and Source Water Research
Chloride, Salinity, and Dissolved Solids
Water-Quality Benchmarks for Contaminants
Trends in water quality
Water-Quality Trends from Lake Sediment Cores
How do we do it?
Access USGS publications and manuals on National Water-Quality Project sampling methods.
Looking for information on groundwater quality as well?
Explore these links:
Learn about topics and projects related to surface-water quality.
Access USGS data on surface-water quality and ecology using the links below.
Below, you’ll find the latest in peer-reviewed journal articles and USGS reports on water-quality issues in streams and rivers.
Agriculture — A river runs through it — The connections between agriculture and water quality
Effects of urban multi-stressors on three stream biotic assemblages
Linking the agricultural landscape of the Midwest to stream health with structural equation modeling
Mixed-chemical exposure and predicted effects potential in wadeable southeastern USA streams
Water-quality trends in US rivers: Exploring effects from streamflow trends and changes in watershed management
Nutrient enrichment in wadeable urban streams in the piedmont ecoregion of the southeastern United States
A database of natural monthly streamflow estimates from 1950 to 2015 for the conterminous United States
Understanding the influence of nutrients on stream ecosystems in agricultural landscapes
The Midwest Stream Quality Assessment—Influences of human activities on streams
Relative importance of water-quality stressors in predicting fish community responses in midwestern streams
Juvenile coho salmon growth and health in streams across an urbanization gradient
Assessing the influence of multiple stressors on stream diatom metrics in the upper Midwest, USA
Predictability and selection of hydrologic metrics in riverine ecohydrology
Isotopic tracers in fish in Northeast provide clue to mercury sources
Isotopes of mercury in fish can indicate the source of that mercury, reports a new study from the USGS Regional Stream Quality Assessment.