The Linzer Aach is a river in Linzgau

Linzgau

Linzgau is a region in southern Germany in the state of Baden-Württemberg north of Lake Constance and south of the Danube valley. It is bounded by Lake Constance on the south, the Hegau on the west, the Danube valley on the north, and the Schussen River on the east.It reaches east as far as...

, Baden-Württemberg

Baden-Württemberg

Baden-Württemberg is one of the 16 states of Germany. Baden-Württemberg is in the southwestern part of the country to the east of the Upper Rhine, and is the third largest in both area and population of Germany's sixteen states, with an area of and 10.7 million inhabitants...

, 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...

. It is approximately 52 kilometres long and flows into Lake Constance

Lake Constance

Lake Constance is a lake on the Rhine at the northern foot of the Alps, and consists of three bodies of water: the Obersee , the Untersee , and a connecting stretch of the Rhine, called the Seerhein.The lake is situated in Germany, Switzerland and Austria near the Alps...

. It has a catchment area of 287 km ² and is part of the Rhine river system. In its middle reaches the river is also known as the Salemer Aach or Hintere Aach

Right tributaries of the river include the Herdenbach, Wäschbach, Torpenbach and Nellenflurb. Left tributaries include the Furtbach, Erlengraben, Aubach, Deggenhauser Aach and Gießbach rivers.