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ISO 9123:2017

Current
Current

The latest, up-to-date edition.

Hydrometry — Stage-fall-discharge relationships
Available format(s)

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

Language(s)

English, French

Published date

10-30-2017

ISO 9123:2017 specifies methods for determining stage-fall-discharge relationships for a stream reach where variable backwater occurs either intermittently or continuously. Two gauging stations, a base reference gauge and an auxiliary gauge are required for gauge height measurements. A number of discharge measurements are required in order to calibrate the rating to the accuracy required by this document.

The preparation of rating curves is not described in detail in this document.

NOTE For a more detailed description of preparing rating curves, see the methods described in ISO 1100‑2.

Committee
ISO/TC 113/SC 1
DevelopmentNote
Supersedes ISO TR 9123 (09/2001) Supersedes ISO/FDIS 9123. (11/2017)
DocumentType
Standard
Pages
29
ProductNote
THIS STANDARD IS ALSO REFERES TO :ISO 18320:,JCGM 100:2008
PublisherName
International Organization for Standardization
Status
Current
Supersedes

Standards Relationship
IS 15847 : 2020 Identical
BS ISO 9123:2017 Identical
SS-ISO 9123:2018 Identical
NEN ISO 9123 : 2017 Identical
NF ISO 9123 January 2019 Identical

17/30331883 DC : 0 BS ISO 1070 - HYDROMETRY - SLOPE - AREA METHOD
BS ISO 2425:2010 Hydrometry. Measurement of liquid flow in open channels under tidal conditions
BS 3680-3B:1997 Measurement of liquid flow in open channels. Stream flow measurement Guide for the establishment and operation of a gauging station
BS ISO 1100-2:1998 Measurement of liquid flow in open channels Determination of the stage-discharge relation
ISO 2425:2010 Hydrometry Measurement of liquid flow in open channels under tidal conditions
09/30169001 DC : 0 BS ISO 2425 - HYDROMETRY - MEASUREMENT OF LIQUID FLOW IN OPEN CHANNELS UNDER TIDAL CONDITIONS
ISO 1100-2:2010 Hydrometry Measurement of liquid flow in open channels Part 2: Determination of the stage-discharge relationship

ISO 5168:2005 Measurement of fluid flow — Procedures for the evaluation of uncertainties
ISO 1100-2:2010 Hydrometry Measurement of liquid flow in open channels Part 2: Determination of the stage-discharge relationship
ISO 1088:2007 Hydrometry Velocity-area methods using current-meters Collection and processing of data for determination of uncertainties in flow measurement
ISO/TS 25377:2007 Hydrometric uncertainty guidance (HUG)
ISO 772:1996 Hydrometric determinations — Vocabulary and symbols
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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