National Water-Quality Assessment (NAWQA) Program
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 trends
Salinity 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)
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)
USGS completes drinking-water reservoir pilot program (Released January 2002)
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: nawqa_whq@usgs.gov
Page Last Modified: Wednesday, 07-Sep-2011 11:17:08 EDT
