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

Multilingual Technical Dictionary (MTD)
1233. Velocity-head rod, Velocity-head stick, Run-up : A device for measuring velocity through culverts, or over weirs, dams, etc., by placing the rod vertically in the flow and observing the `run-up` (the difference in water levels obtained at upstream and downstream of the rod); the rod is, generally, calibrated to read velocity, or discharge.

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