Click for complete self-training materialsWhy don my peaks add up?
When hydrographs are added, HydroCAD adds the corresponding flow at each time step. The peak flows will add directly only if they occur at the exact same time. If the peaks occur at different times, the peak value will be somewhat less than the sum of the individual peaks. To verify that hydrographs are being added correctly you can compare the total inflow volume, which should always be the exact sum of the individual hydrograph volumes. To review the hydrograph summation, right-click the tabular hydrograph and select the inflow detail. More info.
