The Lake
- Location: South-east of the city of Zürich, bordering on the cantons of Zürich, Schwyz and St. Gallen
- Length along its banks: 87.6 km
- Distance Zürich-Rapperswil: 28.5 km
- Distance Rapperswil-Schmerikon: 11 km
- Total area: 88.66 km2
- Widest point, between Stäfa and Richterswil: 3.85 km
- Deepest point, between Herrliberg and Oberrieden: 143 m
- Influx: Linth (Linth canal)
- Efflux: Limmat RiverMean water level: 405.95 m above sea-level
- Highest water level (measured in 1876): 407.48 m above sea-level
- Last time the lake froze over: 1962/63
