ISO 9123:2017
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The latest, up-to-date edition.
Hydrometry — Stage-fall-discharge relationships
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30-10-2017
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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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