Reference number
ISO 9123:2017
© ISO 2024
International Standard
ISO 9123:2017
Hydrometry — Stage-fall-discharge relationships
Edition 2
2017-10
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Published (Edition 2, 2017)
This publication was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 9123:2017

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Format
CHF 151
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2017-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 29
  • Technical Committee :
    ISO/TC 113/SC 1
    ICS :
    17.120.20 
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