Manning equation

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Manning equation

[′man·iŋ i‚kwā·zhən]
(fluid mechanics)
An equation used to compute the velocity of uniform flow in an open channel.
References in periodicals archive ?
One method to obtain this is the use of the Manning formula as presented in the Isco Open Channel Flow Measurement Handbook, Fourth Edition, published by Isco, Inc.
In a field situation, careful use of the Manning formula can result in the determination of a flow rate that is accurate to within 10 to 20 percent.