This post is a continuation of the post titled, "When to Use Multiple Watershed Configurations in HEC-ResSim", from 30May2017.
That post is found here:
Multiple Watershed Configurations Link
Basically, multiple reservoir networks are needed whenever you want to vary a physical parameter of the system while also preserving the original parameter. These parameters can include:
- Routing parameters
- Outlet capacity or number of outlets
- Storage elevation tables