<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema 
            xmlns:nwis="http://water.usgs.gov/XML/5.0"
            
            xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            elementFormDefault="qualified">

	<xsd:element name="ExpandCode" default="LINR">
		<xsd:annotation>
			<xsd:documentation>
				<Definition>The code that defines the type of curve.</Definition>
			</xsd:documentation>
		</xsd:annotation>
		<xsd:simpleType>
			<xsd:restriction base="xsd:NMTOKEN">
				<xsd:enumeration value="LINR"/>
				<xsd:enumeration value="LOGX"/>
				<xsd:enumeration value="EQTN"/>
			</xsd:restriction>
		</xsd:simpleType>
	</xsd:element>
</xsd:schema>
