Lugan

a river in Donetsk and Voroshilovgrad oblasts, Ukrainian SSR; a right tributary of the Severskii Donets (Don basin). Length, 198 km; basin area, 3,740 sq km. It rises northeast of the city of Gorlovka and flows through the Donets Ridge. It is fed primarily by snow. In the upper course (130 km from the mouth), the average discharge is 14 cu m per sec, with a maximum of 121 cu m per sec; in the summer the river here dries up for as long as two months. The Lugan’ is icebound for varying periods of time, usually from December through March. The cities of Pervomaisk, Kirovsk, Zimogor’e, Aleksandrovsk, and Voroshilovgrad are on the river.