The Lauter is a river in Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 and France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

, left tributary of the Rhine. Its length is 55 km. It is formed by the confluence of two headstreams (Scheidbach and Wartenbach) north of Hinterweidenthal

Hinterweidenthal

Hinterweidenthal is a municipality in Südwestpfalz district, in Rhineland-Palatinate, western Germany....

 in the Pfälzerwald, Rhineland-Palatinate

Rhineland-Palatinate

Rhineland-Palatinate is one of the 16 states of the Federal Republic of Germany. It has an area of and about four million inhabitants. The capital is Mainz. English speakers also commonly refer to the state by its German name, Rheinland-Pfalz ....

, Germany. It flows through Dahn

Dahn

----Dahn is a municipality in the Südwestpfalz district, in Rhineland-Palatinate, Germany. It is situated in the Palatinate Forest, approximately 15 km southeast of Pirmasens, and 25 km west of Landau...

, crosses the border with France, flows through Wissembourg

Wissembourg

Wissembourg is a commune in the Bas-Rhin department in Alsace in northeastern France.It is situated on the little River Lauter close to the border between France and Germany approximately north of Strasbourg and west of Karlsruhe. Wissembourg is a sub-prefecture of the department...

, and then forms the French-German international boundary until its confluence with the Rhine near Lauterbourg

Lauterbourg

Lauterbourg is a commune and Bas-Rhin department in Alsace in north-eastern France. Situated on the German border and not far from the German city of Karlsruhe, it is the easternmost commune in Metropolitan France...

 and Neuburg am Rhein

Neuburg am Rhein

Neuburg am Rhein is a municipality in the district of Germersheim, in Rhineland-Palatinate, Germany....

.