structural:reformatting
Yugansky Nature Reserve is a Russian 'zapovednik' in the basin of the Bolshoy Yugan River, a left tributary of the Ob River. The reserve is in the central part of the West Siberian Plain, in the southern part of the Middle Ob lowlands. It is situated in the Surgutsky District of the Khanty-Mansi Autonomous Okrug, about 500 km due north of the city of Omsk. The reserve was created in 1982, and covers an area of 648,636 ha (2,504.40 sq mi).