Country Ukraine | ||
 | ||
The Loppan' River (Лопань) is a river that rises in Belgorod Oblast of Russia and flows across the Russian-Ukrainian border into Kharkiv Oblast where it joins the Udy River in Kharkiv. The river is 93 km long. The Kharkiv River is one of its tributaries.
Map of Lopan River, Kharkivska, Ukraine
References
Lopan River Wikipedia(Text) CC BY-SA