Lake Hallwil
lake in Switzerland
Lake Hallwil (German: Hallwilersee) is a lake largely in the Canton of Aargau, Switzerland, located at 47°17′N 8°12′E. 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.
See also
List of lakes of Switzerland
External links
Media related to Lake Hallwil at Wikimedia Commons
"Lake Hallwil" in German, French and Italian in the online Historical Dictionary of Switzerland.
Begin with the source’s own compact description: “Lake Hallwil” is lake in Switzerland. The dossier treats that line as a proposition to test through Lake, Hallwil and lake, not as a finished interpretation.
Why this record matters
The phrase “lake in Switzerland” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Jul 26, 2026. The linked authority identifier is Q14465. VIAF identifies the subject as 170453791. The Library of Congress control number is sh85058497. Authority coordinates are 47.284, 8.216. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1938.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
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Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
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- Expand the search: follow Lake Hallwil primary sources, Lake Hallwil archive and Lake research across catalogues and specialist indexes.
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Questions for further research
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This entry incorporates text from “Lake Hallwil” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.