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Standard
ISO 19234
First edition
Hydrometry — Low cost baffles
2024-03
to aid fish passage on triangular
profile gauging weirs
Hydrométrie — Chicanes à faible coût pour faciliter le passage
des poissons par les déversoirs à profil triangulaire
Reference number
ISO 19234:2024(en) © ISO 2024
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ISO 19234:2024(en)
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© ISO 2024
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 19234:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Principles . 4
5.1 General principles .4
5.2 Crump weirs — Structures that conform to ISO 4360 .5
5.3 Flat-V weirs — Structures that conform to ISO 4377 .5
5.4 Suitability for fish species .6
6 Installation — General considerations . 8
6.1 Site selection and application .8
6.2 Baffle dimensions .9
6.3 Baffle material and construction .10
6.4 Limitations for baffle installations .11
7 Installation at Crump weir — Weirs that conform to ISO 4360 .12
7.1 General baffle arrangements for Crump weirs . 12
7.2 Location of the first baffle on Crump weirs .
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