BOLSHOY IK

BOLSHOY IK, a river, a right tributary of the Sakmara River. It originates 12 km SE of Selo Kananikolskoye of Zilairsky Raion. Length — 341 km, basin area — 7,670 km². The relief of the basin is strongly dismembered by the erosion network (deep valleys and ravines with narrow watersheds). The eastern p. of the basin is located on the Zilair Plateau, karst forms are common: funnels, underground lakes, caves, etc. The river in its upper reaches forms a gorge, in the lower reaches there are floodplain lakes. Landscapes of the east. p. are represented by pine and larch forests.