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The U.S. Geological Survey National Water Quality Network—Surface Water—2023

Melissa L. Riskin
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Abstract

The U.S. Geological Survey (USGS) National Water Quality Network for surface water (NWQN-SW) was established in 2013 to develop long-term, comparable assessments of surface-water quality in support of national, regional, state, and local needs related to water-quality management and policy. Waterquality samples are collected at each site and measured for a variety of parameters. In 2023, the NWQN-SW consisted of 109 sites, each of them paired with a streamgage, operated by the USGS or other agencies that provide continuous information on streamflow conditions. The waterquality data and the streamflow information from the NWQN-SW is then used to assess the status and trends of water-quality conditions and potential impacts on human and aquatic health.

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90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: 18.771115062337024° to 71.35706654962706° latitude; -178.2421875° to -66.796875° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Melissa L. Riskin. 2024-11-15. The U.S. Geological Survey National Water Quality Network—Surface Water—2023. https://doi.org/10.3133/gip245

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