Article 8314

Title of the article



Yakovlev Peter Ivanovich, Hidrologist of first category, Research center «Geoecology» (63 15 let Oktyabrya street, Tver, Russia),

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Background. The article comparatively estimates groundwater inflow into main rivers of Tver region by its linear characteristics – flow rate, q l/sec km. The given hydrological inflow parameters characterize the water content of the river systems in the low-flow period in the majority of Russian regions.
Materials and methods. As the indicators of groundwater inflow into rivers the author used mean annual 30-day water discharges of winter low-flow from stationary and temporary water posts of various departments on main regional rivers. Hydrological characterisitcs of river and ground waters are taken from the library materials of Roshydromet and “Rosnedra” Federal agency.
Results. It is confirmed that the Upper Volga lower the city of Rzhev drains deep groundwaters, and the Mologa and Zapadnaya Dvina rivers feed predominantly from the upper ground waterbearing strata in the low-flow period. Hydrochemicalindicators of river and ground waters indirectly characterize the intensity of groundwater inflow into main regional rivers.
Conclusions. It is shown that the parameters of groundwater inflow into rivers depend on climatic, soil, geological and hydrogeological conditions of the river basins under consideration, as well as on the value of erosive cut of the regional watercourse valleys and the depth of drainage influence.

Key words

underground waters, river waters, surface waters, source area, discharge area, geological and structural analysis, hydrochemical testing, thermometric, hydrometric survey, ion flow, complex method.

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