Lengwitz is a river of

Thuringia Thuringia (; german: Thüringen ), officially the Free State of Thuringia ( ), is a state of central Germany, covering , the sixth smallest of the sixteen German states. It has a population of about 2.1 million. Erfurt is the capital and larg ...

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

. At its confluence with the

Freibach Freibach is a river of Thuringia, Germany. At its confluence with the Taubach and the Lengwitz near Stützerbach, the Ilm is formed. See also *List of rivers of Thuringia A list of rivers of Thuringia, Germany: A *Alster * Apfelstädt ...

and the

Taubach Taubach is a river of Thuringia, Germany. At its confluence with the Freibach and the Lengwitz near Stützerbach, the Ilm is formed. See also *List of rivers of Thuringia A list of rivers of Thuringia, Germany: A *Alster * Apfelstädt ...

near

Stützerbach Stützerbach is a village and a former municipality in the Ilm-Kreis district, in Thuringia, Germany. Since 1 January 2019, it is part of the town Ilmenau. History Within the German Empire (1871-1918), part of Stützerbach belonged to the Pru ...

, the Ilm is formed.