Russia, home to over 100,000 rivers, has one of the world's largest surface water resources, with its lakes containing approximately one-quarter of the world's liquid fresh water. Lake Baikal, the largest and most prominent among Russia's fresh water bodies, is the world's deepest, purest, oldest and most capacious fresh water lake, containing over one-fifth of the world's fresh surface water. Ladoga and Onega in northwestern Russia are two of the largest lakes in Europe. Russia is second only to Brazil by total renewable water resources. The Volga, situated in western Russia, is the longest river in Europe; while the rivers of Ob, Yenisey, Lena, and Amur in Siberia are among the longest rivers in the world.