Sasykkol lake (translated from the Kazakh language "Sasyk" - rotten, fetid;" Kol " - lake), in the delta of the Alakol Biosphere Reserve, flows the Tentek river in the South, and the river also flows into the Sasykkol lake. The average depth of the lake is about 3 m, and the maximum -4.7 m. The average annual water level varies up to 60 cm due to the fact that the lake is flowing. Through the river Zhinishkesu water goes to Lake Koshkarkol and then flows into Lake Alakol. Since the water in the lake is fresh, its mineralization varies during the year from 0.27 to 2.16 g/L.