National Water-Quality Assessment (NAWQA) Project
Urban Stressors Affect Health of Southeast Streams (January 2019)
Elevated manganese in some domestic wells (December 2018)
New model reveals links between Midwest land use, stressors, and stream ecology (December 2018)
Stream quality trends affected by streamflow and watershed management (December 2018)
Trends in nutrient loading to U.S. coastal waters (December 2018)
Groundwater Quality in Two U.S. Principal Aquifers (November 2018)
Nationwide evaluation of water-quality trends relative to drinking-water and aquatic-life benchmarks (October 2018)
New web-based tool to visualize water quality in Midwest streams (October 2018)
Updates to web tool for tracking water quality of the Nation's rivers and streams (October 2018)
Scientists discuss USGS research on harmful algal blooms (HABs) and nutrients(August 2018)
Updates to web tool for visualizing changes in groundwater quality (August 2018)
Major updates to Health-Based Screening Levels (HBSLs) database (July 2018)
Agriculture and the Quality of the Nation's Waters (June 2018)
Aquatic Critters Can Tell Us a Lot About How to Improve Stream Health (May 2018)
Factsheet | Journal article: fish | Journal article: invertebrates | Journal article: algae
High radium levels and their causes in the Cambrian-Ordovician aquifer (December 2017)
Groundwater Quality in Four U.S. Principal Aquifers (December 2017)
Increasing Chloride in U.S. Rivers (September 2017)
Pesticides Prevalent in Midwestern Streams (August 2017)
Press Release | Journal Article | Unformatted articleUnconventional Oil and Gas Production Not Currently Affecting Drinking Water Quality (May 2017)
Online Mapper Provides 40 year Look at River and Stream Quality (April 2017)
Press Release | Online MapperNational Groundwater Awareness Week, March 5-11, 2017 (March 2017)
Nation's River Quality Data Could Power Deeper Science Insights (January 2017)
Potential Corrosivity of Untreated Groundwater in the U.S. (July 2016)
Benefits of Ag Conservation in Upper Mississippi River Basin (June 2016)
Pharmaceuticals Commonly Detected in Small Southeastern Streams (June 2016)
Online Mapper Provides a Decadal Look at Groundwater Quality (June 2016)
Algal Toxins Detected in One-Third of Streams Assessed in Southeastern U.S. (March 2016)
U.S. Rivers Show Few Signs of Improvement from Historic Nitrate Increases
Press Release | ArticlePredicting Pesticides in Streams and Rivers: Where is Water-Quality at Risk? (September 2015)
New Online Tool Tracks Water Quality in the Nation's Streams and Rivers (July 2015)
Quality of the Nation's Groundwater (March 2015)
Mercury in the Nation's Streams - Levels, Trends, and Implications
Pesticides Still a Concern for Aquatic Life in U.S. Rivers and Streams (September 2014)
New USGS Health-Based Screening Levels Available (July 2014)
Human Activities Increase Salt Content in Many of the Nation's Streams (June 2014)
Trends in Nutrients and Pesticides in the Nation's Streams and Rivers (April 2014)
Tracking Nutrient Inputs to the Nation's Estuaries and Great Lakes (March 2014)
New Online, Interactive Sediment Data Portal (January 2014)
Ecological Health of the Nations Streams (2013)
Nitrate in the Mississippi River and Its Tributaries, 1980 to 2010: Are we making progress? (October 2013)
Factors Affecting Public-Supply-Well Vulnerability to Contamination (August 2013)
USGS Maps Show the National Distribution and Trends of Pesticide Use, 1992-2009 (May 2013)
NAWQA's Priorities and Strategies for 2013-2023 (April 2013)
Proposed 2014 Budget--Impacts to Lon-term Monitoring and Modeling
Radium occurrence and geochemistry in groundwater in the U.S. (press release, reports, and FAQs) (February 15, 2012)
Effects of Urban Development on Stream Ecosystems (press release, publications)
Quarterly Highlights (vol 5, vol 4, vol 3, vol 2, vol 1) (April 2012)
A National Assessment of Changes in Chloride, Dissolved Solids, and Nitrate in Groundwater (press release, report) (April 27, 2012)
Revised Health-Based Screening Levels available for 48 contaminants (April 10, 2012)
Radium occurrence and geochemistry in groundwater in the U.S. (press release, reports, and FAQs) (February 15, 2012)
Regional Assessments of Nutrient Sources and Transport to Streams, Reservoirs, and Estuaries (Online Decision Support System, articles, press release, stakeholder quotes) (September 6, 2011)
Arsenic, Uranium and Other Trace Elements, a Potential Concern in Private Drinking Wells (press release, report and supporting data) (August 30, 2011)
No Consistent Declines in Nitrate Levels in Large Rivers in the Mississippi River Basin (press release, article and related graphics) (August 8, 2011)
PAHs Increasing in Urban U.S. Lakes (fact sheet, presentation/video, FAQs, publications and additional information) (Congressional Briefing, April 14, 2011)
Tillage practices in the conterminous United States, 1989-2004, aggregated by watersheds (report) (March 29, 2011)
Organic carbon in our Nation's surface waters--Sink or Source? (report, technical announcement) (March 4, 2011)
Online guide to diatoms of the U.S. (guide, technical announcement) (January 25, 2011)
Regional Assessments of Nutrient Sources and Transport to Streams, Reservoirs, and Estuaries (articles, press release) (September 6, 2011)
Arsenic, Uranium and Other Trace Elements, a Potential Concern in Private Drinking Wells (press release, report and supporting data) (August 30, 2011)
No Consistent Declines in Nitrate Levels in Large Rivers in the Mississippi River Basin (press release, article and related graphics) (August 8, 2011)
PAHs Increasing in Urban U.S. Lakes (fact sheet, presentation/video, FAQs, publications and additional information) (Congressional Briefing, April 14, 2011)
Quarterly Highlights (vol 2, vol 1) (April 5, 2011)
Tillage practices in the conterminous United States, 1989-2004, aggregated by watersheds (report) (March 29, 2011)
Organic carbon in our Nation's surface waters--Sink or Source? (report, technical announcement) (March 4, 2011)
Online guide to diatoms of the U.S. (guide, technical announcement) (January 25, 2011)
Elevated arsenic reported in tested wells in more Maine towns (press release; publication and featured maps) (December 8, 2010)
Coal Tar Sealant Largest Source of PAHs in Lakes (press release; journal article; article and additional information) (December 6, 2010)
Altered flows leads to ecological degradation in streams across the U.S. (press release; journal (PDF)) (November 3, 2010)
Nutrients in the Nation's streams and groundwater (publications; press release; podcast) (September 23, 2010)
Natural occurring geologic sources of phosphorus in the southeastern United States (Technical announcement; Map) (August 2010)
Mercury trends in fish in the US, 1969-2005 (June 21, 2010)
Effects of urban development on stream health (press release; publications and video podcasts (June 3, 2010)
Quality of Water from Public-Supply Wells Across the United States (May 21, 2010)
Planning for NAWQA's next decade (Design plans; Key issues: National Research Council review) (May 2010)
Contaminant Transport to Public Supply Wells (publications; press release; video podcast) (February 11, 2010)
Redox Conditions in Aquifers (fact sheet, Decision-support tool (Microsoft Excel), additional information) (January 12, 2010)
Pesticide Trends in Corn Belt Streams and Rivers (report; journal article; press release) (November 9, 2009)
Agricultural Chemicals in our Environment (fact sheet; technical announcement; journal article series) (October 22, 2009)
Chloride in Groundwater and Surface Water (report; press release) (September 16, 2009)
Prediction of atrazine concentrations (interactive online mapping; technical announcement; report) (August 20, 2009)
Mercury in Fish, Water, and Sediment (report; press release; podcast) (August 19, 2009)
Water quality in the High Plains aquifer (report; press release) (July 16, 2009)
Trends in Stream Nutrient Concentrations and Loads (July 15, 2009)
Water Quality in Carbonate Aquifers (June 26, 2009)
NAWQA Publications Now Available On-line by State or by selected topics, such as nutrients, pesticides, mercury, aquatic ecology, or drinking water. (April 2, 2009)
Ranking of SPARROW Model Nutrient Yields from the Mississippi/Atchafalaya River Basin Watersheds and SPARROW Fact Sheet (April 1, 2009)
Quality of Water from Domestic Wells Across the United States (March 27, 2009)
Organic Compounds in Source Water of Nine Community Water Systems that Withdraw from Streams
Journal Environmental Science & Technology features new findings on PAHs and urban lake contamination in the Central and Eastern US (press release) (November 20, 2008)
Trends in Ground-Water Quality in the United States (October 2008)
Water Availability - August 22, 2008 National Liaison Committee Meeting Highlights (August 2008)
Water Availability -- The Connection Between Water Use and Quality (USGS Fact Sheet 2008-3015) (March 2008)
The National Water-Quality Assessment Program - Progress To-Date and Setting the Stage for the Future (pdf, 6 pages) (October 2008)
U.S. Geological Survey (USGS) Investigations of National and Regional Trends in Ground-Water Quality in the United States (September 2008)
New Information on Large River Monitoring through the USGS National Stream Quality Accounting Network (NASQAN) (September 2008)
Journal of Environmental Quality (JEQ) features USGS studies in five agricultural watersheds across the U.S. (Highlights (pdf)) (May 2008)
Differences in Phosphorus and Nitrogen Delivery to the Gulf of Mexico from the Mississippi River Basin (January 2008)
Salinity in streams and ground water in the southwestern U.S. (November 2007)
Fecal-indicator bacteria in the Nation's ground water (September 2007)
Trends in metals and hydrophobic organic contaminants in lake and reservoir sediment cores. (August 2007)
--More information on the national assessment of trendsSalinity in streams and ground water in the southwestern U.S.
USGS Perspective on Monitoring and Assessment (Released October 2006)
USGS Health-based screening levels (Released April 2006)
Volatile Organic Compounds in the Nation's Ground Water and Drinking-Water Supply Wells
(released April 2006)Pesticides in the Nation's Streams and Ground Water
(released March 2006)New papers on trends in metals and hydrophobic organic contaminants in streams and rivers of the United States using lake and reservoir sediment cores. (More information on the national assessment of trends)
Delivering NAWQA data and mapping over the Web -- NEW USGS Fact Sheet describes the "what and how" about NAWQA's Data Warehouse
USGS Co-Sponsors World Water Monitoring Day (Full event details) (October 2006)
USGS Perspective on Monitoring and Assessment in the Journal of Environmental Monitoring (Released May 2006)
Volatile Organic Compounds in the Nation's Ground Water and Drinking-Water Supply Wells (Released April 2006)
Urban Water-Quality Issues Addressed through Multiple Studies (Released April 2006)
Pesticides in the Nation's Streams and Ground Water (Released March 2006)
Parking-Lot Sealcoat: A Major Source of PAHs in Urban and Suburban Environments (Released January 2006)
USGS Health-based screening levels: A tool for evaluating what water-quality data may mean to human health (Released April 2006)
USGS health-based screening levels are applied to ground-water quality data in New Jersey (USGS Fact Sheet 2005-3059 ; USGS Scientific Investigations Report 2004-5174) (Released June 2005)
NAWQA assesses ground-water quality in 19 aquifer systems used for drinking-water supplies across the Nation (USGS Fact Sheet 2005-3013) (Released May 2005)
Congressional Briefing Sheets:
- Moving from Monitoring to Prediction: The Quality of the Nation’s Ground Water (Released March 11, 2005)
- Moving from Monitoring to Prediction: The Quality of the Nation’s Streams (Released March 4, 2005)
- Monitoring in the 21st Century to address our Nation's water-resource questions (Released February 25, 2005)
NAWQA information provides an unbiased scientific basis for managers, planners, and policy makers at all levels--local, state, and national--to make decisions for the protection of drinking water, the health of aquatic ecosystems, and for resource management. (Updated January 25, 2005)
Program Objectives in the Second Decade (Released at the NAWQA National Liaison Meeting, September 24, 2004)
Summary water-quality assessments available for 15 river basins and aquifer systems (Study Units), studied 1997-2001 (Released May 2004).
Water Quality in the Nation's Streams and Aquifers--An Overview of Selected Findings, 1991-2001 (USGS Circular 1265) (Highlights) (Released May 2004)
USGS Announces Online Access to Nationwide Fish Community Data
Monitoring and Assessing our Nation's Water Quality (USGS Fact Sheet 076-02) (Released August 2002)
National Academy of Sciences Review (Released February 13, 2002)
- Representative Accomplishments of NAWQA, Cycle I
- Opportunities to Improve the USGS NAWQA Program - A Summary
USGS completes drinking-water reservoir pilot program (Released January 2002)
- Access the report,abstract, summary, and data of the USGS drinking-water reservoir pilot program
- Read EPA's documents on the preliminary cumulative risk assessment for pesticide compounds
MTBE and other volatile organic compounds—New findings and implications on the quality of source waters used for drinking-water supplies (USGS Fact Sheet 105-01) (Released November 15, 2001)
The National Water-Quality Assessment Program--Entering a new decade of investigations. (USGS Fact Sheet 071-01) (Released August 2001)
Summary water-quality assessments available for 16 river basins and aquifer systems (Study Units), studied 1994-98 (Released May 2001). Highlights of Study-Unit findings
Selected findings and current perspectives on urban and agricultural water quality. - Studies by NAWQA in nearly 120 agricultural and 35 urban watersheds show that nonpoint chemical contamination is an agricultural and urban issue. Released April 20, 2001)
NAWQA's online data warehouse of 12.9 million records enables water resource managers, scientists, and the public to find data about the quality of the water at 6,800 stream sites and 7,800 wells across the country. (Released April 2001)
U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/headlines/index.html
Page Contact Information: gs-w_nawqa_whq@usgs.gov
Page Last Modified: Thursday, 31-Jan-2019 12:59:36 EST
