Could someone provide an explanation for me as to why pipe network flow is reduced in the flex table when an additional drainage area with longer time of concentration is added to the network? See included images below. This model is using the rational method solver. In the first image, there is a single drainage area contributing to the network and both CO-1 and C0-2 reflect the flow from that drainage area. However, when a second drainage area is added with a different time of concentration (second image), the flow in the flex tables for CO-2 is greatly reduced. I guess what I am looking for here is the peak discharge through this network? Not sure what I am missing. Thanks.