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The cumec is a measure of flow rate, as shorthand for "cubic metre per second"[1] (cms) or m3/s (m3s−1). Continuing the informal usage, the plural form cumecs is also common in speech.

The word "cumec" is a slang term commonly used between workers in the measurement of water flow through natural streams and civil works, but rarely used in writing. Data in units of cumec are used along the y-axis or vertical axis of a flow hydrograph, which describes the time variation of discharge of a river (the mean velocity multiplied by cross-sectional area). A moderately sized river discharges in the order of 100 cumecs.

One cumec is equivalent to 35.3147 cubic feet per second[1] in the United States customary units.

See also[edit]

Cusec, shorthand for cubic feet per second


  1. ^ a b "Units: C", The University of North Carolina at Chapel Hill, webpage: UNC-Rowlett.