Which river flows through Winterthur?

The Töss flows through Winterthur and later flows into the Rhine.

Common mistakes

B: Rhine

The Rhine forms the northern border of the canton, but it does not flow through Winterthur.

C: Limmat

The Limmat flows through the city of Zurich, not through Winterthur.

D: Sihl

The Sihl flows into the city of Zurich.

Lakes, rivers and hills

The largest lake in the canton is Lake Zurich. The second-largest is Lake Greifen, followed by Lake Pfäffikon. Both are in the Zurich Oberland, east of the city of Zurich. Lake Zug, Lake Hallwil, Lake Sempach, Lake Walen and Lake Sihl are in other cantons.

Canton and municipality of Zurich · Zurich: lakes, rivers, landscape

Sources

• zh.ch
• stadt-zuerich.ch

Official question of the Canton of Zurich (Gemeindeamt, May 2025). Translation and explanation: Swiss Passport.