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ISO 18320:2020

Hydrometry -- Measurement of liquid flow in open channels -- Determination of the stage–discharge relationship

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Kehtiv alates 03.08.2020
Tegevusala (ICS grupid)
17.120.20 Kulu lahtises kanalis
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Staatus
Kuupäev
Tüüp
Nimetus
03.08.2020
Põhitekst
15.11.2010
Põhitekst
This document specifies methods of determining the stage?discharge relationship for gauging stations. It specifies an accuracy for defining the stage?discharge relationship based on a sufficient number of discharge measurements, complete with corresponding stage measurements. This document considers stable and unstable channels and includes brief descriptions of the effects on the stage?discharge relationship of the transition from inbank to overbank flows, shifting controls, variable backwater and hysteresis. Methods of determining discharge for twin-gauge stations, ultrasonic velocity-measurement stations and other complex rating curves are not described in detail. NOTE These types of rating curves are described separately in other International Standards, Technical Specifications and Technical Reports, which are listed in the Bibliography.
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