# ISO 6420:1984 — Withdrawn and superseded ISO standards For ISO 6420:1984, item title is Liquid flow measurement in open channels — Position fixing equipment for hydrometric boats; status code is 9599; successor is ISO 6420:2016; withdrawn / published date is 1984-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 6420:1984 _(verified: appears in the quote below)_ - **Item title:** Liquid flow measurement in open channels — Position fixing equipment for hydrometric boats _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6420:2016 - **Withdrawn / published date:** 1984-12-01 _(verified: appears in the quote below)_ ## What the source says > 12768,IS,,ISO 6420:1984,Liquid flow measurement in open channels — Position fixing equipment for hydrometric boats,Mesure de débit des liquides dans les canaux découverts — Équipement de localisation de bateaux hydrométriques,1984-12-01,1,['17.120.20'],ISO/TC 113/SC 5,9599,,[65501],"['en','fr']",9,"

Specifies methods of determining the position of hydrometric boats with respect to known points on the banks of rivers or estuaries. Applies to conventional surveying techniques and, in recognition of the availability of more sophisticated equipment, describes the principles of operation of currently available electronic positioning equipment.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).