Lake Hallwil

47°17′N 8°12′E / 47.283°N 8.200°E / 47.283; 8.200Primary inflowsAabachPrimary outflowsAabachCatchment area128 km² (49 sq mi)Basin countriesSwitzerlandMax. length8.4 km (5.2 mi)Max. width1.5 km (0.93 mi)Surface area10.3 km² (4.0 sq mi)Average depth28 m (92 ft)Max. depth48 m (157 ft)Water volume0.285 km³ (231,000 acre⋅ft)Residence time3.9 yearsSurface elevation449 m (1,473 ft)SettlementsBeinwil am See, Meisterschwanden, Seengen

Lake Hallwil (German: Hallwilersee) is a lake largely in the Canton of Aargau, Switzerland, located at 47°17′N 8°12′E / 47.283°N 8.200°E / 47.283; 8.200. It is the largest lake in Aargau and lies mostly in the districts of Lenzburg and Kulm on the southern edge of the canton. The southern tip of the lake reaches into the canton of Lucerne. The main river leading to this lake is the Aabach, which is coming from the Lake Baldegg.

Its surface is approximately 10.3 km² and its maximum depth is 48 metres. It is a popular vacation destination.

In 1938 Sir Malcolm Campbell set a world water speed record in Blue Bird K3 on the lake.

External links

• Media related to Lake Hallwil at Wikimedia Commons
• Lake Hallwil in German, French and Italian in the online Historical Dictionary of Switzerland.
• Waterlevels of Lake Hallwil at Meisterschwanden
• Profile of Lake Hallwil at schweizersee.ch