Reports > Long-Crested Weir Design


ITRC Report No. R 21-004.  Charles Burt, Sierra Layous, and Kyle Feist

Long-Crested Weir Design for Canal Water Level Control

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Long-crested weirs are the oldest “modern” structure for good upstream water level control. New long-crested weirs are commonly constructed in irrigation project modernization schemes where designers, managers, and operators want very simple and robust water level control. Long-crested weirs are not to be confused with sharp-crested rectangular weirs or broad-crested weirs – both of which are used for flow measurement rather than for water level control.


Burt, C., S. Layous, and K. Feist. 2021. Long-Crested Weir Design for Canal Water Level Control. Irrigation Training & Research Center, California Polytechnic State University, San Luis Obispo, California, USA. ITRC Report No. R 21-004. 44 pp.

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