When water quality modeling is disabled, there are three modules: Watershed Setup, Reservoir Network and Simulation. However, when water quality modeling capabilities are enabled in the Watershed Data Editor (by selecting Enable Water Quality Modeling), a fourth module, the Water Quality module (Water Quality Module), becomes active. The Water Quality module allows users to enter, edit and configure water quality data. An overview of this module is provided in the Water Quality Module (Chapter 15), with further detail presented in Chapter 3 through Chapter 11.

The Watershed Setup, Reservoir Network and Simulation modules change when water quality modeling is enabled. The change to the Reservoir Network module is the least noticeable but requires adjustments to the reservoir operations (see Chapter 12 for more details). Additionally, in the HEC-ResSim Module Concepts with Water Quality, major water quality features added to each component are highlighted in green, indicating that these features are only available when water quality modeling is enabled in the Watershed Data Editor (Watershed Data Editor).

Chapter 2 provides an overview of all four modules, including descriptions of new components introduced for modeling water quality


HEC-ResSim Module Concepts with Water Quality