The Gera is a river in Thuringia, Germany.

It originates in the Thuringian Forest, west of Ilmenau.

The largest towns along the Gera are Arnstadt and Erfurt.

Along its way, Gera River splits up and reunites multiple times.

Branches of the Gera are: The original name of Gera River was Erphes River (Latin for brown, muddy water), which survived in the name of Erfurt coming from “ford at Erphes River”.