Ulken Koskol
Ulken Koskol is a salt lake in Aiyrtau District, North Kazakhstan Region, Kazakhstan.
Saumalkol town, the district capital, is located to the southwest. Kenashchi village lies to the southwest of the southwestern shore.
Geography
Ulken Koskol is an endorheic lake in the Kazakh Uplands. It is part of the Ishim River basin. The bottom is flat and the lakeshore is clayey and gently sloping, Ulken Koskol is located in an area where there are numerous lakes. Kishi Koskol lies to the SSE, Shalkar to the south and lake Saumalkol to the southwest. River Kamysakty has its sources a little to the NW of the northern end of Ulken Koskol.The lake is fed mainly by snow and precipitation. Since the water is salty and has high mineral content it is not suitable for drinking. Ulken Koskol is largely surrounded by agricultural fields.