Sauer

The Sauer (German, Luxembourgish) or Sûre (French) is a river in Belgium, Luxembourg and Germany. It is a left tributary of the river Moselle, and so it is part of the drainage basin of the Rhine river.

Geography
The Sauer river has a length of  and a drainage basin with an area of .

Course
The source of the Sauer is, as Sûre, in the southeast of Belgium in the Ardennes (Luxembourg province), on the western part of the Rhenish Massif, at an altitude of about .

From there, the Sauer flows to the east and crosses the border between Belgium and Luxembourg near Martelange. It forms the border between Belgium and Luxembourg for  north of Martelange. On their way through the mountainous north of Luxembourg (the Oesling), it passes through the Lac de la Haute Sure, an artificial lake to the west of Esch-sur-Sûre.

After flowing through Ettelbruck and Diekirch, the Sauer forms the border between Luxembourg and Germany for the last  of its course, passing Echternach before joining, as left tributary, the Moselle in Wasserbillig, at about  of altitude.

Main tributaries 
 Left tributary
 Wiltz - 42 km
 Blees - 14 km
 Our - 78 km
 Gaybach - 23.2 km
 Prüm - 95 km
 Right tributary
 Alzette - 73 km;
 White Ernz - 30 km;
 Black Ernz - 25 km;

Gallery

Related pages
 List of rivers of Belgium
 List of rivers of Germany
 List of rivers of Luxembourg

 References 

Other websites

 The Obersauer Nature Park 

Category:Rivers of Belgium
Category:Rivers of Rhineland-Palatinate
Category:Rivers of Luxembourg
Category:Wallonia
Category:Luxembourg (Belgium)