WMS:Ramser Tc Equation: Difference between revisions

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[[Category:Equations|R]]
[[Category:Equations|Ramser]]


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Revision as of 15:38, 6 December 2016

Ramser (1927) developed an equation for computing the time of concentration in well-defined channels. The equation is based on the length and slope of the channel.

where:

= time of concentration in minutes.
= length of channel reach in feet.
= average channel slope in ft/ft.

For flow in concrete channels, should be multiplied by 0.2.


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