Hydrodynamic Transformations of the Natural Hydrogeological System of the Ob-Tom’ Watershed

The natural hydrogeological conditions of an aquifer system, prior to the beginning of groundwater extraction by the Tomsk and Seversk water operation, have been studied. Special attention is given to changes in groundwater recharge and discharge conditions in response to the pumping. This study considers the hydrogeological features of the main aquifer complexes, including their capacity, structure, and chemical composition of waters.