Cochrane/Pueyrredón Lake
lake in Capitán Prat Province, Santa Cruz Province, Argentina
The Pueyrredón/Cochrane Lake is a glacier fed lake located on the eastern edge of the southern Andes, straddling the border between Argentina and Chile. It is named after Lord Cochrane on the Chilean side and Juan Martín de Pueyrredón on the Argentina side. The border is a peninsula that juts out into the lake on the north side. The border to the north of the lake follows the ridgeline of the last major expression of the eastern Andes. The Argentine portion of the lake has a surface of 150 km2 (58 sq mi), while the portion in Chile covers 175 km2 (68 sq mi).
A narrow land bridge separates the southern end of Lake Pueyrredón from the smaller, shallower Lake Posadas. Its drainage basin is bordered by the Ghio Lake basin to the northeast. Cochrane Lake drains into the Baker River through the short Cochrane River on its western edge. The 12,156 foot (3,706 meter) high Monte San Lorenzo has a small stream named Oro River, originating on its north flank that flows generally northeastward into Lake Pueyrredón. The vast semi-arid Patagonian Plateau lies east of the lake.
This brief starts where responsible research should: with the source description of “Cochrane/Pueyrredón Lake” as lake in Capitán Prat Province, Santa Cruz Province, Argentina. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as lake in Capitán Prat Province, Santa Cruz Province, Argentina. Its deeper value depends on whether names, dates, institutions and citations support that framing.
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 25, 2026. The linked authority identifier is Q728467. Authority coordinates are -47.267, -72.050. 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 “Cochrane/Pueyrredón Lake”, its source revision and the description used here.
- Expand the search: follow Cochrane/Pueyrredón Lake primary sources, Cochrane/Pueyrredón Lake archive and Cochrane 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 “Cochrane/Pueyrredón Lake”?
- 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 “Cochrane/Pueyrredón Lake” 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.