ИСТИНА

In this study, river runoff simulation approach, based on the open-access hydrological model SWAT and free spatial hydrometeorological data was presented for Zapadnaya Dvina River catchment (Russian part). The comparative statistical analysis of meteorological observations and reanalysis data was carried out to prepare a daily meteorological database for SWAT. Recommendations were given on the data source using in the modeling process. Preliminary modeling results gave valuable information about optimal input parameters of the river catchment and the method of defining elementary catchments. The results also include the estimation of the model parameters sensitivity and their calibration for river runoff calculation with daily and monthly temporal resolution.