{{Short description|Lake largely in the Canton of Aargau, Switzerland}}{{Infobox body of water | name = Lake Hallwil | other_name = Hallwilersee | image = Aerial image of Lake Hallwil (view from the south).jpg | caption = | image_bathymetry = | caption_bathymetry = | location= Aargau | coords = {{coord|47|17|N|8|12|E|type:waterbody_region:CH-AG|display=inline,title}} | type = | inflow = Aabach | outflow = Aabach | catchment = {{convert|128|km2|abbr=on}} | basin_countries = Switzerland | length = {{convert|8.4|km|abbr=on}} | width = {{convert|1.5|km|abbr=on}} | area = {{convert|10.3|km2|abbr=on}} | depth = {{convert|28|m|abbr=on}} | max-depth = {{convert|48|m|abbr=on}} | volume = {{convert|0.285|km3|acre.ft|abbr=on}} | residence_time = 3.9 years | shore = | elevation = {{convert|449|m|abbr=on}} | islands = | cities = Beinwil am See, Meisterschwanden, Seengen | pushpin_map=Canton of Lucerne#Canton of Aargau#Switzerland#Alps | pushpin_label_position= bottom | mapframe = yes | mapframe-zoom = 11 }} __NOTOC__ '''Lake Hallwil''' (German: ''Hallwilersee'') is a lake largely in the Canton of Aargau, Switzerland, located at {{coord|47|17|N|8|12|E|type:waterbody_region:CH-AG}}. 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.
{{stack|thumb|250px|Lake Hallwil in the canton of Aargau}}
Its surface is approximately 10.3 km<sup>2</sup> 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.
==See also== *List of lakes of Switzerland
==External links== *{{commons category-inline}} *{{HDS|8663}} *[http://www.hydrodaten.admin.ch/en/2097.html#aktuelle_daten Waterlevels of Lake Hallwil] at Meisterschwanden *[https://web.archive.org/web/20170725201956/https://www.schweizersee.ch/hallwilersee/ Profile of Lake Hallwil] at schweizersee.ch
{{Lakes of Switzerland}} {{Authority control}}
{{DEFAULTSORT:Hallwil}} Category:Lakes of Switzerland Category:Lakes of Aargau Category:Lakes of the canton of Lucerne LHallwil
{{Aargau-geo-stub}} {{Switzerland-lake-stub}}