ASTM_D_5413_-_93_2013.pdf

Designation:D541393(Reapproved 2013)Standard Test Methods forMeasurement of Water Levels in Open-Water Bodies1This standard is issued under the fixed designation D5413;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover equipment and proceduresused in obtaining water levels of rivers,lakes,and reservoirs orother water bodies.Three types of equipment are available asfollows:Test Method ANonrecording water-level measurement devicesTest Method BRecording water-level measurement devicesTest Method CRemote-interrogation water-level measurement devices1.2 The procedures detailed in these test methods are widelyused by those responsible for investigations of streams,lakes,reservoirs,and estuaries,for example,the U.S.AgriculturalResearch Service,the U.S.Army Corp of Engineers,and theU.S.Geological Survey.2The referenced ISO standard alsofurnishes useful information.1.3 It is the responsibility of the user of these test methodsto determine the acceptability of a specific device or procedureto meet operational requirements.Compatibility betweensensors,recorders,retrieval equipment,and operational sys-tems is necessary,and data requirements and environmentaloperating conditions must be considered in equipment selec-tion.1.4 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3D1129 Terminology Relating to WaterD1941 Test Method for Open Channel Flow Measurementof Water with the Parshall FlumeD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD5242 Test Method for Open-Channel Flow Measurementof Water with Thin-Plate Weirs2.2 ISO Standard:4ISO 4373 Measurement of Liquid Flow in Open ChannelsWater Level Measuring Devices3.Terminology3.1 DefinitionsFor definitions of terms used in these testmethods,refer to Terminology3.2 Definitions of Terms Specific to This Standard:3.2.1 elevationthe vertical distance from a datum to apoint.3.2.2 datuma level plane that represents a zero or somedefined elevation.3.2.3 gaugea generic term that includes water level mea-suring devices.3.2.4 gauge datuma datum whose surface is at the zeroelevation of all the gauges at a gauging station;this datum isoften at a known elevation referenced to National GeodeticVertical Datum of 1929(NGVD).3.2.5 gauge heightthe height of a water surface above anestablished or arbitrary datum at a particular gauging station;also termed stage.3.2.6 gauging stationa particular site on a stream,canal,lake,or reservoir where systematic observations of hydrologicdata are obtained.1These test methods are under the jurisdiction of ASTM Committee D19 onWater and is the direct responsibility of Subcommittee D19.07 on Sediments,Geomorphology,and Open-Channel Flow.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 1993.Last previous edition approved in 2007 as D5413 93(2007).DOI:10.1520/D5413-93R13.2Buchanan,T.J.,and Somers,W.P.,“Stage Measurement at Gauging Stations,”Techniques of Water Resources Investigations,Book 3,Chapter A-7,U.S.Geologi-cal Survey,1968.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.7 National Geodetic Vertical Datum of 1929(NGVD)prior to 1973 known as mean sea level datum;a spheroidaldatum in the conterminous United States and Canada thatapproximates mean sea level but does not necessarily agreewith sea level at a specific location.4.Significance and Use4.1 These test methods are used to determine the gaugeheight or elevation of a river or other body of water above agiven datum.4.2 Water level data can serve as an easily recordedparameter,and through use of a stage-discharge relationprovide an indirect value of stream discharge,often at agauging station.4.3 These test methods can be used in conjunction withother determinations of biological,physical,or chemical prop-erties of waters.TEST METHOD ANONRECORDING WATER-LEVEL MEASUREMENT DEVICES5.Summary of Test Method5.1 These test methods are u