The Reservoir Network module functions the same way for normal HEC-ResSim watersheds as for water quality enabled watersheds. Users are advised to refer to the HEC-ResSim Version 4.0 User's Manual for more information regarding the reservoir network module, and for other general HEC-ResSim software information. Reservoir outlets must provide their outlet geometry and elevation place to support the implementation of a WQ rule in HEC-ResSim. The user may optionally define a WQ control device, which may be assigned to a single outlet or outlet group. Chapter 12 provides further details on defining water quality reservoir operation rules.