Runoff and other water balance parameters will be modelled for the studied localities using Bilan water balance model. Changes of discharge in relation to meteorological parameters will be monitored in selected river basins, especially with regard to the determination of the likelihood of desiccation. Details of the structure of Bilan water balance model can be found in a special issue of journal VTEI, available at: http://www.vuv.cz/fileadmin/...