The Töss is a 56 km long river in the Swiss canton of Zürich and a tributary of the High Rhine (Hochrhein). It starts at Tössscheidi, the confluence of the Vordertöss and Hindertöss (whose sources are in the canton of St. Gallen), passes through Winterthur\’s Töss and Wülflingen districts and ends at Tössegg near Freienstein-Teufen. Two of its main tributaries are the Kempt and Eulach.
