The Eder, Saar, Elbe, Eger, Oder, and Ruhr are all rivers of Germany. The Eder is a tributary of the Fulda River in Hesse, Germany. The Saar is a river in northeastern France and western Germany. The Elbe is one of the major rivers of Central Europe and flows through Germany and the Czech Republic. The Eger is a river in Bavaria, Germany, and is a tributary of the Danube. The Oder is a major river in Central Europe and forms part of the border between Germany and Poland. The Ruhr is a major river in western Germany and is a tributary of the Rhine.