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ISO 18320:2020

Current

Current

The latest, up-to-date edition.

Hydrometry Measurement of liquid flow in open channels Determination of the stagedischarge relationship

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

03-08-2020

€165.00
Excluding VAT

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.

DocumentType
Standard
Pages
46
PublisherName
International Organization for Standardization
Status
Current
Supersedes

Standards Relationship
AS 3778.2.3:2023 Identical
BS ISO 18320:2020 Identical
NEN-ISO 18320:2020 Identical
NF ISO 18320:2020 Identical

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