WMS:OC Rational Equation: Difference between revisions
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where: | where: | ||
* | * ''Q'' – peak flow <math>(ft^3/s\mbox{ } or\mbox{ } m^3/s)</math> | ||
* | * ''I'' – rainfall intensity (in/hr, mm/hr) | ||
* < | * ''F<sub>m</sub>'' – maximum [[WMS:OC Losses|loss rate]], where <math>F_m = a_p * F_p</math> | ||
* | * ''A'' – catchment area (acres) | ||
This equation is very similar to the traditional [[WMS:Rational Method Equation|Rational Method equation]]. The term < | 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. | ||
Revision as of 15:30, 6 December 2016
Flows for the Orange County rational method are calculated from the following equation:
where:
- Q – peak flow
- I – rainfall intensity (in/hr, mm/hr)
- Fm – maximum loss rate, where
- A – catchment area (acres)
This equation is very similar to the traditional Rational Method equation. The term I - Fm is often referred to as the effective precipitation.
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