<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns="http://water.usgs.gov/XML/AQ" xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://water.usgs.gov/XML/AQ" elementFormDefault="qualified" version="1.0">
	<xsd:element name="Parameter">
		<xsd:annotation>
			<xsd:documentation>
				<Definition>Parameter description for Aquarius software that includes USGS parameter code.</Definition>
			</xsd:documentation>
		</xsd:annotation>
		<xsd:complexType>
			<xsd:sequence>
				<xsd:element name="USGSParameterCode" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The USGS parameter code.</Definition>
						</xsd:documentation>
					</xsd:annotation>
					<xsd:simpleType>
						<xsd:restriction base="xsd:token">
							<xsd:minLength value="1"/>
							<xsd:maxLength value="8"/>
						</xsd:restriction>
					</xsd:simpleType>
				</xsd:element>
				<xsd:element name="Name" type="xsd:token" maxOccurs="1">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The parameter name used in Aquarius software.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="Units" type="xsd:token">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The units of measure for the parameter.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
			</xsd:sequence>
		</xsd:complexType>
	</xsd:element>
</xsd:schema>
