Vorderrhein

The Vorderrhein is one of the two sources of the Rhine. Its catchment area of 1,512 square kilometres is located predominantly in the canton of Graubünden . The Vorderrhein is about 76 kilometres long, thus more than 5% longer than the Hinterrhein/Rein Posteriur . The Vorderrhein, however, has an average water flow of 53.8 m3/s , which is less than the flow of the Hinterrhein. According to the Atlas of Switzerland of the Swiss Federal Office of Topography, the source of the Vorderrhein– and the Rhine –is located north of the Rein da Tuma and Lake Toma.
Vorderrhein was also the name of a judicial district that was created in 1851 with the reorganization of the judiciary of Graubünden. In 2001, it was annexed by the District Surselva.

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