# ISO 1438:2008 — Withdrawn and superseded ISO standards For ISO 1438:2008, item title is Hydrometry — Open channel flow measurement using thin-plate weirs; status code is 9599; successor is ISO 1438:2017; withdrawn / published date is 2008-04-02, recorded from its source on 2026-08-05. - **Identifier:** ISO 1438:2008 _(verified: appears in the quote below)_ - **Item title:** Hydrometry — Open channel flow measurement using thin-plate weirs _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 1438:2017 - **Withdrawn / published date:** 2008-04-02 _(verified: appears in the quote below)_ ## What the source says > 38066,IS,,ISO 1438:2008,Hydrometry — Open channel flow measurement using thin-plate weirs,Hydrométrie — Mesure de débit dans les canaux découverts au moyen de déversoirs à paroi mince,2008-04-02,2,['17.120.20'],ISO/TC 113/SC 2,9599,"[6034,6035]",[66463],['en'],59,
ISO 1438:2008 defines the requirements for the use of rectangular and triangular (V-notch) thin-plate weirs for the measurement of flow of clear water in open channels under free flow conditions. It includes the requirements for the use of full-width rectangular thin-plate weirs in submerged (drowned) flow conditions.
## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).