WMS:OC Rational Equation: Difference between revisions

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Flows for the Orange County rational method are calculated from the following equation:
#redirect [[WMS:Orange_County_Rational_Method#OC_Rational_Equation]]
 
<math> Q = 0.90(I - F_m)A </math>
 
where:
 
* <math>Q</math> &ndash; peak flow <math>(ft^3/s or m^3/s)</math>
* <math>I</math> &ndash; rainfall intensity (in/hr, mm/hr)
* <math>F_m</math> &ndash; maximum [[WMS:OC Losses|loss rate]], where F<sub>m</sub> = a<sub>p</sub> * F<sub>p</sub>
* <math>A</math> &ndash; catchment area (acres)
 
This equation is very similar to the traditional [[WMS:Rational Method Equation|Rational Method equation]]. The term I - F<sub>m</sub> is often referred to as the effective precipitation.
 
 
==Related Topics==
* [[WMS:OC Losses|Losses]]
 
 
{{WMSMain}}

Latest revision as of 21:30, 21 November 2023