Hydrosphere, watershed, rainfall - runoff process in watershed and its factors, factors influencing rainfall-runoff process, hydrologic losses and their quantification, hydrological network, instruments and devices, measurement of
atmospheric precipitation, evaporation and evapotranspiration, atmospheric humidity, water-level gauge and water discharge measurement, hydrological data processing, water courses and river network, maximum and minimum discharges, floating matters and sediments, ground water level and ground water runoff, balance of surface waters and groundwater.
Stochastic hydrology, theory of stochastic processes, probability and statistical methods used in hydrology for hydrological data processing, real and artificial discharge series.
Operative hydrology, simulation and prediction models of rainfall-runoff processes and river basin water discharge, modelling of river basin discharge during floods.