In Asia , important rivers are the Ob , the Irtysh , the Yenisey , the Angara , the Lena , the Amur , the Yana , the Indigirka , and the Kolyma .
In Asia , important rivers are the Ob , Irtysh , Yenisey , Angara River , Lena , Amur , Yana , Indigirka and Kolyma .