Jari River
River in Pará, Brazil
The Jari River, or Jary River (Portuguese: Rio Jari), is a northern tributary of the Amazon River on the border between the states of Pará and Amapá in northeastern Brazil. It is in the most downstream regions of the Amazon Basin and borders the Guiana Highlands and the Guianas to the northwest.
Course
The river flows through the Uatuma-Trombetas moist forests ecoregion.
The source of the Jari is in the south of the Tumuk Humak Mountains, and its mouth is at the Amazon River between the municipalities of Almeirim in Pará and Vitória do Jari in Amapá. Ilha Grande de Gurupá, the second-largest island of the Amazon River Delta, is opposite of the mouth of the Jari River.
Part of the river's basin is in the Maicuru Biological Reserve.
The Jari River forms the western boundary of the Tumucumaque Mountains National Park.
Below the park it forms the western boundary of the 806,184 hectares (1,992,120 acres) Rio Iratapuru Sustainable Development Reserve, created in 1997.
For part of its course it runs through the Jari Ecological Station.
Small numbers of people have settled along the river here, built houses and cleared fields.
Begin with the source’s own compact description: “Jari River” is river in Pará, Brazil. The dossier treats that line as a proposition to test through Jari, River and Pará, not as a finished interpretation.
Why this record matters
The phrase “river in Pará, Brazil” 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.
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 3, 2026. The linked authority identifier is Q2670262. Authority coordinates are -1.150, -51.900. 3 of 3 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1997.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. 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 “Jari River”, its source revision and the description used here.
- Expand the search: follow Jari River primary sources, Jari River archive and Jari 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 “Jari River”?
- Which earlier names or jurisdictions may reveal additional records?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Jari 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.