The name of the parent folder, in this case HBV-land, is used by HBV-light as the name of the catchment. This folder should at least contain a subfolder 'Data'. The subfolder 'Results' will be created automatically during the simulations if it does not exist. The 'Data' folder should contain at least the following files in order to be able to open the catchment in HBV-light:
PTQ file
Evaporation file
SubCatchment file (Only needed when the catchment consists of more than one subcatchment.)