The outflow from the first reservoir is divided into two separate flows (Q1 and Q2) where Q1 represents the fast flow which is triggered after a certain threshold L to be defined by the user and Q2 the intermediate flow.
The water exiting the first container is separated into two distinct streams (Q1 and Q2), with Q1 being the swift flow triggered when a specific limit (L) is reached as defined by the user, while Q2 is the intermediary flow.