. . . . . "The Alster is a right tributary of the Elbe river in Northern Germany. It has its source near Henstedt-Ulzburg, Schleswig-Holstein, flows somewhat southwards through much of the Free and Hanseatic City of Hamburg and joins the Elbe in central Hamburg.The Alster is Hamburg's second most important river."@en . . . . "31.0"^^ . "5.8"^^ . "4.0"^^ . . . . . . . . . . "Alster"@en .