International Organization for Standardization (ISO)
Latest
ISO 1438:2017
Scope
This document 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.
ISO 1438:2017 Referenced Document
ISO 18365:2013 Hydrometry.Selection, establishment and operation of a gauging station
ISO 4373:2008 Hydrometry - Water level measuring devices