Assessment of the provision of water resources in different regions of the earth.

Russia is one of the richest countries in the field of water resources. This country has a large number of water bodies: rivers, lakes, glaciers, underground waters, swamps.
The following regions of the country are insufficiently provided with underground water resources: Murmansk, Omsk, Novgorod, Kurgan regions, the Republic of Kalmykia and the Stavropol Territory. Also, water deficit is observed in the basins of the Irtysh, Kuban and Don rivers. One of the world’s largest water management complex is located in Russia. It includes about 30 thousand reservoirs and ponds with a volume of about 800 cubic meters. km and a useful volume of 342 cubic meters. km.