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 Chapter 2, Section 2.2). Furthermore, met stations added to the watershed can only be edited from the Watershed Setup module. Refer to Chapter 2, Section 2.2 for instructions on creating (Section 2.2.2), defining (Section 2.2.3), editing, moving, removing, or deleting water quality stations (Section 2.2.4). Once the desired met stations have been specified from the Water Quality module (figure below), 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