For any state or region, the availability of an optimal amount of local water is of great importance. Since the local drain is a kind of its own wealth of the state and in this regard, its use and protection does not depend on other states. Rich in many natural resources, water in Azerbaijan is a scarce resource. The main reason for this is due to the fact that Azerbaijan is located in the arid zone of the South Caucasus and here the moisture content is 2.7-3 times less than evaporation. The situation is aggravated by the fact that more than 70% of Azerbaijan's water resources are transboundary sources, mainly the Kura and Araz rivers, the basin of which is connected by the territories of 4 border states - Turkey, Armenia, Georgia and Iran.