Lac de Bonlieu
lake in France

The Lac de Bonlieu (English: Lake of Bonlieu) is a lake in the Jura department, Bourgogne-Franche-Comté, France. It is named after the commune of Bonlieu.
The shoreline is composed of peat bogs, surrounded by a forest of beech and fir trees, and the lake is accessible from the north by a walking path. The lake's dark blue colour is due to limestone and marl in the lakebed.
The lake is a popular spot for fishing, with perch, roach, rudd and sculpins to be caught.
“Lac de Bonlieu” enters the record as lake in France. Crown Archives preserves that source wording while asking what Bonlieu, lake and France can confirm, complicate or overturn.
Why this record matters
“Lac de Bonlieu” is worth following because a concise public description often conceals a longer documentary argument. Here, Bonlieu, lake and France provides the most credible route into that argument.
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 Aug 27, 2026. The linked authority identifier is Q1799618. Authority coordinates are 46.586, 5.874. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. 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 “Lac de Bonlieu”, its source revision and the description used here.
- Expand the search: follow Lac de Bonlieu primary sources, Lac de Bonlieu archive and Bonlieu 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 “Lac de Bonlieu”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Lac de Bonlieu” 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.