BS IS0 18320:2020 BSl Standards Publication Hydrometry - Measurement of liquid flow in open channels Determination of the stage-discharge relationship bsi. BSISO18320:2020 BRITISH STANDARD Nationalforeword This British Standard is the UK implementation of IS018320:2020. The UK participation in its preparation was entrusted to Technical CommitteeCPI/113/1,Hydrometricmethodsandinstrumentation. A list of organizations represented on this committee can be obtained on requesttoits committeemanager. This publication does not purport to include all the necessary provisions ofa contract.Users are responsible for its correct application. TheBritishStandardsInstitution2020 PublishedbyBSIStandardsLimited2020 ISBN9780580987786 ICS17.120.20 Compliance with a British Standard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon31August2020. Amendments/corrigendaissued sincepublication Date Textaffected BSISO18320:2020 ISO INTERNATIONAL STANDARD 18320 First edition 2020-07 Hydrometry Measurement of liquid flow in open channels - Determination of the stage-discharge relationship Hydrometrie-Measuragedudebitdes coursd'eau-Détermination delarelationhauteur-débit Reference number ISO 18320:2020(E) ISO @IS02020