The Lena River: Siberia's Great Arctic Waterway

The Lena River flows entirely within Russia, traversing Siberia for over 4,400 kilometers (2,700 miles) before emptying into the Laptev Sea. It is the longest river in the Arctic Ocean basin and the eleventh-longest globally.

The Lena's vast watershed covers much of eastern Siberia, supporting sparse populations, rich biodiversity, and significant natural resources. Its delta, a sprawling wetland, is a critical habitat for migratory birds and fish. The river remains frozen for much of the year, with dramatic spring breakup floods shaping the landscape.