The Reservoir Water Balance can be selected from the Tool menu as shown in Figure 1.
Figure 1. Generate DEM.
Once the option is selected, the Generate DEM form will appear as shown in Figure 2. From this form, the user can click on Add File then browse to the digital elevation data file (terrain*.xyz) from the Data folder. Once loaded, the coordinates of the Lower-Left and Upper-Right points will be updated as well as the Cell Size and Number of Cells, the user can change the Cell Size then click on the Calculator symbol to update the Number of Cells and vice versa. The more cells the higher resolution of the DEM file. The output format for the generated DEM files is TB2, click the Generate DEM button to start generating DEM file.
Figure 2. Generate DEM Form.
Once, the Generate DEM button is selected, the Export DEM form is displayed as shown in Figure 3. Enter a name in the File Name (e.g DEM), select the folder directory to store the file then click Save button as shown in Figure 3.
Figure 3. Export DEM to a file.