 Two tributaries of the Rhine, the Alb and the Pfinz, flow through the city from the Kraichgau to eventually join the Rhine.The city lies at an altitude between 100 and 322 m (near the communications tower in the suburb of Grünwettersbach).Its geographical coordinates are ; the 49th parallel runs through the city centre, which puts it at the same latitude as much of the Canada–United States border, the cities Vancouver (Canada), Paris (France), Regensburg (Germany), and Hulunbuir (China).