Alas River
river in Aceh, Indonesia
Alas River is a river in Aceh in northeastern Sumatra, Indonesia, about 1400 km northwest of the capital Jakarta. It is known for its white water rafting.
The banks of the rivers are inhabited by the Alas people.
Geography
The river flows in the northern area of Sumatra with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification). The annual average temperature in the area is 22 °C. The warmest month is March, when the average temperature is around 23 °C, and the coldest is June, at 21 °C. The average annual rainfall is 2943 mm. The wettest month is December, with an average of 370 mm rainfall, and the driest is June, with 82 mm rainfall.
Begin with the source’s own compact description: “Alas River” is river in Aceh, Indonesia. The dossier treats that line as a proposition to test through Alas, River and river, not as a finished interpretation.
Why this record matters
The phrase “river in Aceh, Indonesia” 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 Aug 1, 2026. The linked authority identifier is Q24821618. Authority coordinates are 2.990, 97.936. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1400.
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 “Alas River”, its source revision and the description used here.
- Expand the search: follow Alas River primary sources, Alas River archive and Alas 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 “Alas River”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Alas 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.