# ISO 4371:1984 — Withdrawn and superseded ISO standards For ISO 4371:1984, item title is Measurement of liquid flow in open channels by weirs and flumes — End depth method for estimation of flow in non-rectangular channels with a free overfall (approximate method); status code is 9599; successor is ISO 18481:2017; withdrawn / published date is 1984-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4371:1984 _(verified: appears in the quote below)_ - **Item title:** Measurement of liquid flow in open channels by weirs and flumes — End depth method for estimation of flow in non-rectangular channels with a free overfall (approximate method) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 18481:2017 - **Withdrawn / published date:** 1984-12-01 _(verified: appears in the quote below)_ ## What the source says > 10247,IS,,ISO 4371:1984,Measurement of liquid flow in open channels by weirs and flumes — End depth method for estimation of flow in non-rectangular channels with a free overfall (approximate method),Mesure de débit des liquides dans les canaux découverts au moyen de déversoirs et de canaux jaugeurs — Méthode d'évaluation du débit par détermination de la profondeur en bout des chenaux non rectangulaires à déversement dénoyé (méthode approximative),1984-12-01,1,['17.120.20'],ISO/TC 113/SC 2,9599,,[62561],"['en','fr']",11,"
Specifies a method for the estimation of subcritical flow of clear water in smooth, essentially horizontal, straight open channels with a vertical drop and discharging fr ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).