The Aidar-Arnasay lake system is located in the middle reaches of the Syrdarya River, south of the Chordara reservoir and is connected to the Kyzylkum desert. The largest lake of the lake system, Lake Aydarkol, stretches for 130 km to the southeast at the foot of the Nurata Range, flows into the basin of Lake Tuzkan and connects with the East Arnasay lake system with a length of 70 km.

Qualitative indicators of the water resources of the lake system: 6.7-8.1 times more than the permissible mineralization rate of Lake Arnasay on the pressure side of the Chardara reservoir, 9.6-12.8 times more than in Lake Tuzkon, 9.8-14 times, 5 times more than in Aidar. Lake, which was a lot.

Since AALS is an important source of food (fish) for the population of the country, the lake system requires constant monitoring of the content of heavy metals and other pollutants in water resources.

The lake system is important for the region to prevent a sharp decrease in the volume and quantity of water resources in order to prevent a significant excess of AC with mineralization of water resources, heavy metals and other chemical components.