# ISO/TR 9123:1986 — Withdrawn and superseded ISO standards

For ISO/TR 9123:1986, item title is Liquid flow measurements in open channels — Stage-fall-discharge relations; status code is 9599; successor is ISO 9123:2001; withdrawn / published date is 1986-11-27, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TR 9123:1986 _(verified: appears in the quote below)_
- **Item title:** Liquid flow measurements in open channels — Stage-fall-discharge relations _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9123:2001
- **Withdrawn / published date:** 1986-11-27 _(verified: appears in the quote below)_

## What the source says

> 16720,TR,,ISO/TR 9123:1986,Liquid flow measurements in open channels — Stage-fall-discharge relations,Mesure de débit des liquides dans les canaux découverts — Relations hauteur-chute-débit,1986-11-27,1,['17.120.20'],ISO/TC 113/SC 1,9599,,[29455],"['en','fr']",10,"<p>Specifies methods for determining stage-fall-discharge relations 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 stage measurements. A number of discharge measurements are required in order to calibrate the rating to the accuracy required by this Technical Report.</p>"

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).