<?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:include schemaLocation="MidSectionVelocityObservation.xsd"/>
	<xsd:include schemaLocation="../shared/DateTimeWithDatum.xsd"/>
	<xsd:include schemaLocation="../shared/IEEE754FloatValue.xsd"/>
	<xsd:include schemaLocation="../shared/IEEE754UncertaintyFloatValue.xsd"/>
	<xsd:include schemaLocation="../shared/ReferenceListCodeType.xsd"/>
	<xsd:element name="MidSectionStation">
		<xsd:annotation>
			<xsd:documentation>
				<Definition>A position in the stream cross-section for a discharge meaasurement where one or more current meter measurements are performed.</Definition>
			</xsd:documentation>
		</xsd:annotation>
		<xsd:complexType>
			<xsd:sequence>
				<xsd:element name="SectionDateTime" type="DateTimeWithDatum" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The date and time that the vertical section was measured.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="DistanceFromInitialPointMeasure" type="IEEE754UncertaintyFloatValueType">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The distance from the discharge measurement initial point. The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="WidthMeasure" type="IEEE754UncertaintyFloatValueType">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The width of the section, as measured, generally from half way to the previous section and half way to the next section.  The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="DepthMeasure" type="IEEE754UncertaintyFloatValueType">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The depth of water at the discharge measurement sub-section. The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="AreaMeasure" type="IEEE754UncertaintyFloatValueType">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The cross-section area of the discharge measurement sub-section. The default units are in square feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="DischargeMeasure" type="IEEE754UncertaintyFloatValueType">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The stream discharge of the discharge measurement sub-section. The default units are in cubic feet per second.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="HorizontalAngleCoefficient" type="IEEE754UncertaintyFloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The coefficient to be applied to account for the angle of the streamflow to measurement section.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="VerticalAngleCoefficient" type="IEEE754UncertaintyFloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The coefficient to be applied to account for the angle of angle of the meter suspension to the true vertical.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="AirLineDistanceMeasure" type="IEEE754UncertaintyFloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The true vertical distance of the suspension cable (airline). This value is used to calculate the vertical angle coefficient. The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="WetLineDistanceMeasure" type="IEEE754UncertaintyFloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The distance of the cable underwater (wetline). The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="IceDistanceMeasure" type="IEEE754UncertaintyFloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The distance from the surface of the water to the bottom of the ice. A positive value indicates the water level is above the bottom of the ice. The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="EffectiveDepthMeasure" type="IEEE754UncertaintyFloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The difference between the total depth and the positive value of the vertical distance of the ice. The default units are in feet.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="VelocityMeasure" type="IEEE754UncertaintyFloatValueType">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The average measured velocity through the vertical section.The default units are in feet per second.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="EstimatedVelocityPercent" type="IEEE754FloatValueType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The percentage the velocity estimate is of the next or previous section.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="EstimatedVelocityCode" type="ReferenceListCodeType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The code identifying the origin of the estimated velocity.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element name="Comment" type="xsd:string" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>Comments about the section or the measurements in the section.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
				<xsd:element ref="MidSectionVelocityObservation" minOccurs="0" maxOccurs="unbounded"/>
				<xsd:element name="PierIndicator" type="ReferenceListCodeType" minOccurs="0">
					<xsd:annotation>
						<xsd:documentation>
							<Definition>The code identifying the pier start or end.</Definition>
						</xsd:documentation>
					</xsd:annotation>
				</xsd:element>
			</xsd:sequence>
		</xsd:complexType>
	</xsd:element>
</xsd:schema>
