The changes of water resources in Belarus

Abstract

The total water resources in Belarus have not changed during last years. However, the redistri- bution of water resources for the basins of main rivers is specified. There was an increasing of runoff for the Pripyat and Western Dvina rivers, and a decreasing of runoff for the other rivers in Belarus. The increasing of water resources of the Brest and Gomel regions is also observed. Due to the decreasing of runoff for the Neman River the Grodno region is characterized by the decreasing of water resources. The map of the mean annual runoff in Belarus was constructed. The operational resources of underground waters in Belarus have not changed. At the same time the increasing of explored operational resources of underground waters over 10 years period by the value 287.92 mЗ/day was investigated. The analysis of the explored water resources has found that the groundwater resources of categories A and B were increased, C1 was decreased, and the C2 resources decreased from 466.S to 61 mЗ/day. The analysis of the main indicators of hydrochemical regime has shown the reducing pollution for the rivers in Belarus. At the same times we can say that the quality of surface water is still not satisfactory for the Svisloch, Yaselda, Berezina, Dnieper, and Neman rivers.