Part A: Hydrographs and Watersheds

The Hydrograph below shows discharge response curves to a rainfall event for three different Watersheds. From left to right, Watersheds A$,$ B and C$.$ Time from the rainfall event is along the x$-$axis; channel discharge is along the $y-$axis.

Graph $1.$

Based on the curves, rank the watersheds according to likely extent of impervious surface $($lowmedium$-$high$).$

Explain why you ranked them in the order you chose. In your explanation, use the Hydrograph terminology we reviewed in class.

What characteristics of watershed hydrology would explain the differences between the curves?