<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Melissa L. Riskin</dc:creator>
  <dc:date>2025</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;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. Water-quality samples are collected at each site and measured for a variety of constituents. In 2024, the NWQN-SW consisted of 105 sites, each of them paired with a streamgage, operated by the USGS or other agencies that provide continuous information on &lt;/span&gt;&lt;span&gt;streamflow conditions. The water-quality data and the streamflow information from the NWQN-SW are then used to assess the status and trends of water-quality conditions and potential impacts on human and aquatic health.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/gip259</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>The U.S. Geological Survey National Water Quality Network—Surface Water, 2024</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>