<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema version="5.0" 
            xmlns:nwis="http://water.usgs.gov/XML/NWIS/5.0"
            
            xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            
            elementFormDefault="qualified">
   <xsd:include schemaLocation="Site.xsd"/>
   <xsd:complexType name="WaterQualitySiteType" abstract="true">
      <xsd:annotation>
         <xsd:documentation/>
      </xsd:annotation>
      <xsd:complexContent>
         <xsd:extension base="SiteType"/>
      </xsd:complexContent>
   </xsd:complexType>
   <xsd:element name="WaterQualitySite" type="WaterQualitySiteType" substitutionGroup="Site"/>
</xsd:schema>