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Research dossier · Places & Architecture

Dadu River

River in southwestern China

Architectural plans, a scale model, maps and brass measuring instruments
Places and architectureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 11, 2026
Entity authoritySource title only
Source-derived summary

The Dadu River, known in Tibetan as the Gyelmo Ngul Chu, is a major river located primarily in Sichuan province, southwestern China. The Dadu flows from the eastern Tibetan Plateau into the Sichuan Basin where it joins with the Min River, a tributary of the Yangtze River. Measured from its geographic source, the Dadu is actually longer than the Min River, with a total length of 1,076 km (669 mi) and thus forms the main stem of the Min River system.

Editorial summary

This brief starts where responsible research should: with the source description of “Dadu River” as river in southwestern China. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA valuable geographic starting point for tracing changing names, boundaries, uses and administrative responsibility. The current 81-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. The account is most persuasive where Dadu, River and southwestern can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the places & architecture register because the source frames it as river in southwestern China. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

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 11, 2026.

Critical limits

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.

Best used for
  • Historic place names
  • Jurisdictional context
  • Routes into maps and plans
Verify next

Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.

Three-step research path

  1. Establish the record: confirm the title “Dadu River”, its source revision and the description used here.
  2. Expand the search: follow Dadu River primary sources, Dadu River archive and Dadu research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Dadu River”?
  2. Which authority defined the place, boundary or structure at the relevant date?
  3. What physical evidence or contemporary plan supports the description?
Subject index

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Source & attribution

This entry incorporates text from “Dadu River” 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.