If a watershed has the water quality flag turned off, the water quality alternative UI will be hidden from the user. The information added for the water quality compute by the user will not be deleted if water quality is turned off for the watershed or the alternative.

To compute water quality in a water quality watershed, after defining all water quality information in the Water Quality module, open the HEC-ResSim Alternative Editor through the Alternative -> Edit menu (Figure 192).


Figure 13.1 – Open Alternative Editor