WMS:Rational Method Computing Hydrographs: Difference between revisions
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* [[WMS:Rational Method | * [[WMS:Rational Method Edit Parameters|Rational Method Edit Parameters]] | ||
Revision as of 16:38, 7 January 2016
The Rational Method equation is designed to compute peak flows. However, a hydrograph, based on the peak flow and basin (or outlet) time of concentration, can be computed using one of five different unit hydrographs. Furthermore, there are two different methods (traditional and route by summing) hydrographs can be computed at confluence points.
The Rational Method Hydrographs dialog is used to specify the dimensionless unit hydrograph method, and the way hydrographs at outlets are computed. Options include:
- Traditional method – Computes a peak flow at an outlet by determining composite , , and areas from upstream basins and tributaries.
- Route by summing – Computes peak flows and hydrographs for basins in the traditional manner, but hydrographs at outlet points are determined by combining or summing the hydrographs from upstream basins and tributaries.
- Hydrographaph computation method
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