Oka River is a river,about1,488 km(925 mi) long,of central European U.S.S.R. flowing north,east,and northeast to join the Volga River near Gorky.

• 奥卡河流程约1，488公里（925英里）位于苏联欧洲部分的中部的河，先流向北，而后向东，然后向东北汇入靠近高尔基市的伏尔加河。