NUMERICAL MODELING OF FILTRATIONAL WATER EXCHANGE WITHIN POORLY DRAINED WATERSHEDS OF LESNAYA AND MUKHAVETS RIVERS (BELARUS)

A new methodological approach to the quantitative assessment of infiltration water exchange in poorly drained river basins is presented. Its implementation is demonstrated by the example of a numerical geofiltration model of the watersheds of Lesnaya and Mukhavets rivers. The model calibration consisted in matching the model and actual groundwater heads and subsurface flow into rivers. A quantitative assessment of the long-term resultant infiltration recharge and the components of the balance of ground-, interstratal and surface water is given.