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The Araguari River (Portuguese: Rio Araguari River) is the primary river of Amapá state in north-eastern Brazil. It became famous among surfers when some decided to ride its constant tidal bore, characterizing waves that can last for several minutes.[3]

Araguari River
Undular bore Araguari River-Brazil-USGS-bws00026.jpg
Undular bore and whelps near the mouth of Araguari River. View is oblique toward mouth from airplane at approximately 100 ft (30 m) altitude.[1]
Araguari River (Amapá) is located in Brazil
Araguari River (Amapá)
Native nameRio Araguari  (Portuguese)
Physical characteristics
 ⁃ locationAmapá state
 ⁃ location
Atlantic Ocean
 ⁃ coordinates
1°15′00″N 49°55′00″W / 1.25°N 49.916667°W / 1.25; -49.916667Coordinates: 1°15′00″N 49°55′00″W / 1.25°N 49.916667°W / 1.25; -49.916667
Length560 kilometres (350 mi)[2]
Basin size42,712 square kilometres (16,491 sq mi)
Basin features
 ⁃ leftMutum River, Falsino River

The river flows through the Uatuma-Trombetas moist forests ecoregion.[4] The river defines the western boundary of the 460,353 hectares (1,137,560 acres) Amapá National Forest, a sustainable use conservation unit created in 1989.[5]

See alsoEdit


  1. ^ Figure 5 in: Susan Bartsch-Winkler; David K. Lynch (1988), Catalog of worldwide tidal bore occurrences and characteristics (Circular 1022), U. S. Geological Survey
  2. ^ Ziesler, R.; Ardizzone, G.D. (1979). "Amazon River System". The Inland waters of Latin America. Food and Agriculture Organization of the United Nations. ISBN 92-5-000780-9. Archived from the original on 8 November 2014.
  3. ^ Surfers Village "Big-Wave Tow-in surfers on mile-long Pororoca wave"
  4. ^ Sears, Robin, Northern South America: Northeastern Brazil, into southern Guyana and Suriname (NT0173), WWF: World Wildlife Fund, retrieved 2017-03-31
  5. ^ FLONA do Amapá (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-07-06