USGS Water-Quality Information
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Water Quality DataNational Water Information System (NWIS) NWIS provides current and historical water-quality data. Today's Water Conditions Water-Quality Watch provides continuous real-time water-quality measurements. Water-Quality Web Services Web services automate the sharing of USGS and USEPA water-quality monitoring data. For More Data Additional water-quality data resources are available. USGS in Your AreaUSGS Water Science Centers are located in each state. |
Water-Quality Data
USGS Water-Quality DataUSGS Online Water-Quality Data (NWIS)The USGS collects and analyzes chemical, physical, and biological properties of water, sediment and tissue samples from across the Nation. The National Water Information System (NWIS) includes current and historical water-quality data and related summary statistics. WaterQuality WatchWater-Quality Watch provides continuous real-time water-quality measurements from USGS surface-water monitoring locations. Water-Quality Web ServicesWeb services automate the sharing of USGS and U.S. Environmental Protection Agency water-quality monitoring data. WaterAlertThe USGS WaterAlert service sends e-mail or text messages when certain parameters measured by a USGS data-collection station exceed thresholds set by the user. Alerts are available for selected USGS groundwater, surface-water, water-quality, and precipitation data-collection stations that are part of the National Water Information System (NWIS). National Water-Quality Assessment (NAWQA)The NAWQA Program investigates the status of water-quality conditions and studies how and why these conditions change over time. Most NAQWA data are included in NWIS, but additional data products and databases are available:
National Stream Quality Accounting Network (NASQAN)The NASQAN Program reports on concentrations and loads of selected constituents delivered by major rivers to coastal waters and selected inland sub-basins. National Atlas - WaterNational Atlas map layers include some datasets for water quality in the United States, viewable online or downloadable as GIS data sets. National Atmospheric Deposition Program (NADP)The USGS is the lead federal agency for the monitoring of chemical constituents deposited from the atmosphere via rain, sleet, and snow, also known as wet atmospheric deposition. The NADP monitors wet atmospheric deposition at over 250 sites throughout the Nation. Hydrologic Benchmark Network (HBN)The HBN program collects data from a long-term network of sites located in areas that are minimally affected by human activities. Links are provided to access water-quality data from individual network sites. USGS Annual Water Data ReportsWater resources data can be accessed through annual summary reports or an interactive map. These archival products supplement direct access to current and historical water data provided by NWISWeb. Water Quality PortalThe Water Quality Portal (WQP) provides access to over 150 million water-quality records in the USGS NWIS and the U.S. Environmental Protection Agency (EPA) STOrage and RETrieval (STORET) data bases. The portal is a sponsored by the USGS, the EPA, and the National Water Quality Monitoring Council (NWQMC). Water-Quality Data by StateUSGS Water Science Centers located across the United States may have additional information or resources for local water-quality data. Visit your local USGS Water Science Center web site for more information. Additional USGS Water-Resources DataWater Data DiscoveryThe Water Data Discovery web site provides an overview of all USGS water-resources data. Suspended-Sediment DatabaseThe Suspended-Sediment Database provided daily values of suspended sediment and ancillary data through September 30, 1996. More current data are included in NWIS. USGS Water Data Web Services & XMLUSGS provides machine-readable water data through automated web services and Extensible Markup Language (XML). Water Resources Maps and GIS InformationThe Maps and GIS page provides a list of water-resources GIS resources. USGS Groundwater WatchThe Groundwater Watch web sites group related wells and data from National Water Information System (NWIS) active well networks and provide basic statistics about the water-level data. Interdisciplinary Water Quality DataStudies conducted by other USGS disciplines may also include the collection of water-quality data. For information on additional data available, refer to the Geology Discipline data page or the National Biological Information Infrastructure Data & Tools section. Other Sources of Water-Quality and Related DataGovernment Data
International Water-Quality Data Resources
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