Lake Zurich is a lake in Switzerland, extending southeast of the city of Zürich.
Lake Zurich is formed by the river Linth, which rises in the glaciers of the Glarus Alps and was diverted by the Escher canal (completed in 1811) into Lake Walen from where its waters are carried to the east end of Lake Zurich by means of the Linth canal (completed in 1816). The waters of the Lake Zurich flow out of the lake at its north-west end (Quaibrücke), passing through the city of Zürich; however, the outflow is then called the Limmat.The culminating point of the lake's drainage basin is the Tödi at 3,614 metres above sea level.