The total area of each isochrones was calculated. This result was then used to estimate the volume of water that fell every hour in each isochronous. After this procedure, the values of the Pulses were defined. For example, Pulse 1 represents the volume of water following the first 5 minutes in the first isochronous. Pulse 2 represents the volume of water that fell the next 5 minutes in the first isochronous and the first 5 minutes in the second isochronous etc. It was
found that 99 Pulses were needed until the water runoff. These calculations were the final step for
the creation of the hydrograph.