The
Lena (, ; ;
Buryat: Зүлхэ,
Zülkhe; ,
Ölüöne) is the easternmost of the three great
Siberian rivers that flow into the
Arctic Ocean (the other two being the
Ob and the
Yenisei). It is the
11th longest river in the world and has the 9th largest
watershed. It is also the 3rd largest river in Asia. It is the largest among the rivers whose watershed is entirely within the
Russian territorial boundaries.