River Drainage Basins River Drainage Basins 01/22/24 “What is the area drained by a river?” Rivers drain into other bodies of water such as lakes or oceans. The areas that rivers ultimately drain into are called River Drainage Basins and are important part of geographic analysis. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Earth/Climate science