Hydrological balance, or even the water regime, occurs relatively often in the solution of research in the field of ecology, environmental studies and especially hydrology. There are many ways and methodologies to determine it at your chosen location. Some are based on accurate landscape measurements in a given location and subsequent accurate mathematical modelling. (Antal, et al., 2002) Other procedures are based on existing data with the application of expert estimation to supplement and refine the selected parameters. In our study, they were based on relatively accurate measurements of climatic data, soil and landscape cover. The hydrological balance is always related to a certain time period (daily, monthly, annual, multiannual). The study was based on accurate year-round measurements of climate data.