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Peak Dischrge Estimation using Snyder's Hydrograph

thread162-418730

Peak Dischrge Estimation using Snyder's Hydrograph

Peak Dischrge Estimation using Snyder's Hydrograph

(OP)
I have to find peak discharge of a bridge for 25, 50 and 100 year return period using Snyder's hydro graph method. Based on the catchment physical parameters I got time of concentration,Ct,Cp,L,La values and Design rainfall intensities will be derived from IDF curves for the respective return period. Can someone explain me how to find the peak flow discharge for 25,50,100 return periods.

RE: Peak Dischrge Estimation using Snyder's Hydrograph

(OP)
Thanks for your response. I have gone through several articles. But it is not clear how to find peak flow for different return periods.

RE: Peak Dischrge Estimation using Snyder's Hydrograph

In general, the vertical (flow) axis of any UH is determined by setting the total area equal to the runoff volume. The runoff volume being a function of the rainfall depth, which is in turn determined by the return period.

Peter Smart
HydroCAD Software
www.hydrocad.net

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