The Regime of Water and Chemical Runoff in the Upper Volga Basin under Global Warming

Resumo

The present-day conditions of the formation and distribution of the water resources and chemistry under global warming during the recent decades have been considered. The variations in the characteristics of river water and chemical runoff in the upper Volga basin have been estimated and analyzed. The regional features in the formation of river runoff and water quality variations in 1990–2015 have been determined. The environmental state of upper Volga basin areas has been indicated. The distribution of critical water pollution indices in the basin area has been analyzed, and that of the specific combinatorial water pollution index has been presented.