Before a meteorological dataset can be defined, at least one met station must be added to the watershed using the Station Tool , from the Watershed Setup module (refer to Watershed Setup Module section). Furthermore, met stations added to the watershed can only be edited from the Watershed Setup module. Refer to Watershed Setup Module section for instructions on creating (Define a Water Quality Station section), defining (Water Quality Stations - Station Editor), editing, moving, removing, or deleting water quality stations (Move, Rename or Delete Stations section). Once the desired met stations have been specified from the Water Quality module (.Meteorological Stations – Overview v4.0), required meteorological parameters must be defined. Meteorological datasets are created and defined from the Meteorological Dataset Editor (Figure 3.3).

Figure 3.1: HEC-ResSim Main Window – Water Quality Module – Water Quality Station Tools