Sarysu lake lies next to the Kura River from Imishli Rayon southeast to Sabirabad Rayon. It reaches a total length of . It is one of the four lakes present in the area. The water in the lake is fresh water. The lake inflows from Lake Ağgöl through a canal. It is also filled by groundwater and rain. It outflows to the Kura River. The outflow to Kura is regulated by a water-releasing station in Muradbəyli.