Based on analysis of the observation data on the active layer characteristics, the distribution of the snow cover, the streamflow and the evaporation processes in the small watersheds of the Kolyma water-balance station, five main types of landscapes representative of the mountainous areas of the North-East of Russia were identified: rocky talus at surface watersheds; mountain tundra and Siberian dwarf pine brushwood at south-facing slopes; moss and lichenous sparse forests at north-facing slopes; larch forest in the river valleys; larch forest in the river talik zone. For each type of the landscape, the vegetation-soil cover was developed, and the parameters of the deterministic hydrological model “Hydrograph” were estimated. Modelling of the water balance elements and of the runoff hydrographs were carried out for the Kontaktovy Creek basin (Nizhny gauge, area 21.3 km2) and three microwatersheds representing the main types of landscapes (the Morozova, Severny and Yuzhny Creeks). Calculations were ca
