International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
2245. Weir : 1 - A low dam or wall across a stream to raise the upstream level (illustrated). Termed `fixed-crest weir` or `ungated weir` when uncontrolled. 2 - A structure built across a stream or channel for the purpose of measuring flow. Sometimes described as `measuring weir` or `gauging weir`. Types of measuring weir include `broad crested`, `sharp crested`, `drowned`, or `submerged` and `free fall weir`. 3 - See 5442.
SEE: Weir,

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