Ulken Tobylzhan

Ulken Tobylzhan
Ulken Tobylzhan
Үлкен Тобылжан
	Sentinel-2 image of the lake cluster
	Ulken Tobylzhan
Location	West Siberian Plain
Coordinates	52°43′31″N 77°28′39″E / 52.72528°N 77.47750°E
Type	endorheic
Basin countries	Kazakhstan
Max. length	7.7 kilometers (4.8 mi)
Max. width	2.1 kilometers (1.3 mi)
Surface area	12.5 square kilometers (4.8 sq mi)
Residence time	UTC+6
Shore length1	17.4 kilometers (10.8 mi)
Surface elevation	92 meters (302 ft)
	1 Shore length is not a well-defined measure.

Ulken Tobylzhan (Kazakh: Үлкен Тобылжан; Russian: Большой Таволжан, Bolshoy Tavolzhan) is a salt lake in Uspen District, Pavlodar Region, Kazakhstan.^[1]^[2]

The lake lies 48 kilometers (30 mi) to the northeast of Pavlodar town and 15 kilometers (9.3 mi) south of Uspenka, the district capital.^[3] There is commercial extraction of salt from Ulken Tobylzhan and Maly Tobylzhan, the two largest lakes of the group. Part of the salt is exported to the Western Siberia region.^[4]

Geography[edit]

Lake Ulken Tobylzhan is an elongated lake, part of a circular lake cluster located in the Kulunda Steppe, southern end of the West Siberian Plain. It lies 45 kilometers (28 mi) west of the Kazakhstan–Russia border. The group of lakes is flat and has a diameter of roughly 18 kilometers (11 mi). It is surrounded by cultivated fields.^[3]

Located in the southern half, Ulken Tobylzhan is the largest of the lakes in the cluster. Tobylzhan village lies near the southern lakeshore. The A17 Highway skirts the lake from the south and turns northeast and north, crossing the lake zone. Ulken Tobylzhan is followed by only slightly smaller Kishi Tobylzhan (Maly Tavolzhan) located 2.3 kilometers (1.4 mi) to the north of its NW end. There are a number of smaller lakes, as well as salt marshes in the Tobylzhan cluster.^[3]

Lake Maraldy lies 40 kilometers (25 mi) to the south, and Ulken Azhbolat 45 kilometers (28 mi) to the north of the lake cluster.^[3]