Lacs de Maclu
lake
Lacs de Maclu (or Lacs de Maclus) are two lakes at Le Frasnois in the Jura department of France.
The Grand Lac Maclu has a surface area of 21 ha and a length of 1.1 km with a maximum width of 300 m. Its maximum depth is 24 m. The lake is located in the municipalities of Le Frasnois and La Chaux-du-Dombief.
Petit Lac Maclu is located northeast of the former and has a surface area of 5 ha with a length of 500 m and a maximum width of 120 m. Its maximum depth is 11 m. The lake is located in with the municipality of Le Frasnois.
Begin with the source’s own compact description: “Lacs de Maclu” is lake. The dossier treats that line as a proposition to test through Lacs, Maclu and lake, not as a finished interpretation.
Why this record matters
The phrase “lake” 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.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Jul 26, 2026. The linked authority identifier is Q1332936. Authority coordinates are 46.625, 5.907. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Lacs de Maclu”, its source revision and the description used here.
- Expand the search: follow Lacs de Maclu primary sources, Lacs de Maclu archive and Lacs research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Lacs de Maclu”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Lacs de Maclu” 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.