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Purus River

The Purus River (Portuguese: Rio Purus; Spanish: Río Purús) is a tributary of the Amazon River in South America. Its drainage basin is 371,042 km2 (143,260 sq mi), and the mean annual discharge is 11,207 m3/s (395,800 cu ft/s). The river shares its name with the Alto Purús National Park and the Purús Province (and its conformed Purús District), one of the four provinces of Peru in the Ucayali Region.

Purus River
Purus River
Map of the Amazon Basin with the Purus River highlighted
Location
CountryBrazil, Peru
Physical characteristics
SourceConfluence of Cujar and Curiuja rivers
 • locationUcayali Region, Peru
 • coordinates10°44′56″S 71°47′14″W / 10.74889°S 71.78722°W / -10.74889; -71.78722
 • elevation330 m (1,080 ft)
2nd sourceMost distant source approximate area. Headwaters of Cujar River.
 • locationUcayali Region, Peru
 • coordinates10°42′52″S 72°26′44″W / 10.71444°S 72.44556°W / -10.71444; -72.44556
 • elevation498 m (1,634 ft)[1] 520 m (1,710 ft)
Mouth 
 • coordinates
3°41′35″S 61°28′12″W / 3.69306°S 61.47000°W / -3.69306; -61.47000
 • elevation
11 m (36 ft)[1]
Length3,361.02 km (2,088.44 mi)[1] 3,382 km (2,101 mi)
Basin size371,042 km2 (143,260 sq mi) to 376,600 km2 (145,400 sq mi)[2]
Discharge 
 • locationConfluencia of Solimões, Amazonas State (near mouth)
 • average(Period: 1973–1990)10,970 m3/s (387,000 cu ft/s)[3] (Period: 1979–2015)11,206.9 m3/s (395,770 cu ft/s)[2]
Discharge 
 • locationArumã-Jusante, Amazonas State (359,853 km2 (138,940 sq mi)
 • average(Period of data: 1970–1996)10,469 m3/s (369,700 cu ft/s)[4]
Discharge 
 • locationLábrea, Amazonas State (Basin size: 220,351 km2 (85,078 sq mi)
 • average(Period of data: 1970–1996)5,569 m3/s (196,700 cu ft/s)[4]
Basin features
ProgressionAmazonAtlantic Ocean
River systemSolimões
Tributaries 
 • leftInauini, Pauini, Tapauá
 • rightChandless, Iaco, Acre, Sepatini, Ituxi, Mucuim, Itaparaná

Geography edit

The Purus River rises in Peru. It defines the boundary between Peru and Brazil in the centre of the state of Acre, then runs for a short distance along the boundary of the 231,555 hectares (572,180 acres) Santa Rosa do Purus National Forest, a sustainable use conservation unit created in 2001 after it is joined by the Santa Rosa River. The Purus then flows north east through Manoel Urbano[5] It runs through a continuous forest at the bottom of the great depression, lying between the Madeira River, which skirts the edge of the Brazilian sandstone plateau, and the Ucayali River, which hugs the base of the Andes.[citation needed]

In the state of Amazonas the river runs through the 133,637 hectares (330,220 acres) Arapixi Extractive Reserve, created in 2006 and past the town of Boca do Acre at the end of the BR-317 highway.[6] Further down, it forms the west boundary of the 256,000 hectares (630,000 acres) Purus National Forest, created in 1988.[7] From the town of Pauini down to the town of Lábrea the river is bordered by the 604,209 hectares (1,493,030 acres) Médio Purus Extractive Reserve, created in 2008.[8] Below this it runs through the 197,986 hectares (489,230 acres) Canutama Extractive Reserve along the stretch between the towns of Lábrea and Canutama.[9] In the lowest reaches the river flows through the 1,008,167 hectares (2,491,230 acres) Piagaçu-Purus Sustainable Development Reserve, established in 2003, which holds a large part of its floodplain.[10] It enters the Amazon River west of the Madeira River, which it parallels as far south as the falls of the latter stream.[citation needed]

William Chandless found its elevation above sea level to be only 107 feet (33 m) 590 miles (950 km) from its mouth. It is one of the most crooked streams in the world, and its length in a straight line is less than half of its length following its curves. It is practically only a drainage ditch for the half-submerged, lake-flooded district it crosses.[citation needed] Its width is very uniform for 1,000 miles (1,600 km) up, and for 800 miles (1,300 km) its depth is never less than 45 feet (14 m).[citation needed]

 
Purus red howler monkey

Biodiversity edit

The Purús red howler (Alouatta puruensis) is a species of howler monkey native to Brazil, Peru and north of Bolivia.[11] Peckoltia brevis, a kind of catfish, is found in the middle and upper Amazon within the Purus river basin.[12][13]

Most of the central and lower sections of the river flow through the Purus várzea ecoregion.[14] In the municipality of Tapauá, Amazonas, the river flows through the 233,864 hectares (577,890 acres) Abufari Biological Reserve, a strictly protected area.[15]

Earthworks discovery edit

In 2008, a previously unknown pre-Columbian civilization was discovered in the upper region of the river close to the Bolivian border. After much of the forest in the region was cleared for agricultural use, satellite pictures revealed the remains of large geometric earthworks.[16]

See also edit

References edit

  1. ^ a b c Perú: Anuario de Estadistícas Ambientales 2022 (PDF). 2022.
  2. ^ a b (PDF). Jan 2019. Archived from the original (PDF) on 2021-05-06. Retrieved 2021-10-03.
  3. ^ Molinier M; et al. (22 November 1993). "Hydrologie du Bassin de l'Amazone" (PDF) (in French). (PDF) from the original on 7 October 2016. Retrieved 16 July 2017.
  4. ^ a b Michael, T. Coe; Marcos, Heil Costa; Aurélie, Botta; Charon, Birkett (23 Aug 2002). "Long-term simulations of discharge and floods in the Amazon Basin". CiteSeerX 10.1.1.549.3854.
  5. ^ FLONA de Santa Rosa do Purus (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-06-21
  6. ^ RESEX Arapixi (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-09-08
  7. ^ FLONA do Purus (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-09-08
  8. ^ RESEX Médio Purus (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-09-03
  9. ^ RESEX Canutama (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-09-02
  10. ^ RDS Piagaçu-Purus (in Portuguese), ISA: Instituto Socioambiental, retrieved 2016-08-20
  11. ^ Cornejo, F.M.; Boubli, J.P.; Alves, S.L.; Bicca-Marques, J.C.; Cortés-Ortiz, L.; Calouro, A.M.; de Melo, F.R. (2021). "Alouatta puruensis". IUCN Red List of Threatened Species. 2021: e.T136787A190430767. doi:10.2305/IUCN.UK.2021-1.RLTS.T136787A190430767.en. Retrieved 11 November 2021.
  12. ^ "Planet catfish".
  13. ^ "Fish Base".
  14. ^ "Purus varzea", Global Species, Myers Enterprises II, retrieved 2017-03-15
  15. ^ Unidade de Conservação: Reserva Biológica do Abufari (in Portuguese), MMA: Ministério do Meio Ambiente, retrieved 2016-04-24
  16. ^ Martti Pärssinen, Denise Schaan, Alceu Ranzi: Pre-Columbian geometric earthworks in the upper Purús: a complex society in western Amazonia. Antiquity, Volume 83, 2009, p. 1084–1095

External links edit

  • Map of Amazon State with Purus River, Brazilian Ministry of Transport
  • "Peru Preserves Biodiversity in Vast New Park". Environment News Service. 1 April 2005. Retrieved 5 November 2014.
  • . Enjoy Peru. Archived from the original on 17 May 2008. Retrieved 5 November 2014.

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The Purus River Portuguese Rio Purus Spanish Rio Purus is a tributary of the Amazon River in South America Its drainage basin is 371 042 km2 143 260 sq mi and the mean annual discharge is 11 207 m3 s 395 800 cu ft s The river shares its name with the Alto Purus National Park and the Purus Province and its conformed Purus District one of the four provinces of Peru in the Ucayali Region Purus RiverPurus RiverMap of the Amazon Basin with the Purus River highlightedLocationCountryBrazil PeruPhysical characteristicsSourceConfluence of Cujar and Curiuja rivers locationUcayali Region Peru coordinates10 44 56 S 71 47 14 W 10 74889 S 71 78722 W 10 74889 71 78722 elevation330 m 1 080 ft 2nd sourceMost distant source approximate area Headwaters of Cujar River locationUcayali Region Peru coordinates10 42 52 S 72 26 44 W 10 71444 S 72 44556 W 10 71444 72 44556 elevation498 m 1 634 ft 1 520 m 1 710 ft Mouth coordinates3 41 35 S 61 28 12 W 3 69306 S 61 47000 W 3 69306 61 47000 elevation11 m 36 ft 1 Length3 361 02 km 2 088 44 mi 1 3 382 km 2 101 mi Basin size371 042 km2 143 260 sq mi to 376 600 km2 145 400 sq mi 2 Discharge locationConfluencia of Solimoes Amazonas State near mouth average Period 1973 1990 10 970 m3 s 387 000 cu ft s 3 Period 1979 2015 11 206 9 m3 s 395 770 cu ft s 2 Discharge locationAruma Jusante Amazonas State 359 853 km2 138 940 sq mi average Period of data 1970 1996 10 469 m3 s 369 700 cu ft s 4 Discharge locationLabrea Amazonas State Basin size 220 351 km2 85 078 sq mi average Period of data 1970 1996 5 569 m3 s 196 700 cu ft s 4 Basin featuresProgressionAmazon Atlantic OceanRiver systemSolimoesTributaries leftInauini Pauini Tapaua rightChandless Iaco Acre Sepatini Ituxi Mucuim Itaparana Contents 1 Geography 2 Biodiversity 3 Earthworks discovery 4 See also 5 References 6 External linksGeography editThe Purus River rises in Peru It defines the boundary between Peru and Brazil in the centre of the state of Acre then runs for a short distance along the boundary of the 231 555 hectares 572 180 acres Santa Rosa do Purus National Forest a sustainable use conservation unit created in 2001 after it is joined by the Santa Rosa River The Purus then flows north east through Manoel Urbano 5 It runs through a continuous forest at the bottom of the great depression lying between the Madeira River which skirts the edge of the Brazilian sandstone plateau and the Ucayali River which hugs the base of the Andes citation needed In the state of Amazonas the river runs through the 133 637 hectares 330 220 acres Arapixi Extractive Reserve created in 2006 and past the town of Boca do Acre at the end of the BR 317 highway 6 Further down it forms the west boundary of the 256 000 hectares 630 000 acres Purus National Forest created in 1988 7 From the town of Pauini down to the town of Labrea the river is bordered by the 604 209 hectares 1 493 030 acres Medio Purus Extractive Reserve created in 2008 8 Below this it runs through the 197 986 hectares 489 230 acres Canutama Extractive Reserve along the stretch between the towns of Labrea and Canutama 9 In the lowest reaches the river flows through the 1 008 167 hectares 2 491 230 acres Piagacu Purus Sustainable Development Reserve established in 2003 which holds a large part of its floodplain 10 It enters the Amazon River west of the Madeira River which it parallels as far south as the falls of the latter stream citation needed William Chandless found its elevation above sea level to be only 107 feet 33 m 590 miles 950 km from its mouth It is one of the most crooked streams in the world and its length in a straight line is less than half of its length following its curves It is practically only a drainage ditch for the half submerged lake flooded district it crosses citation needed Its width is very uniform for 1 000 miles 1 600 km up and for 800 miles 1 300 km its depth is never less than 45 feet 14 m citation needed nbsp Purus red howler monkeyBiodiversity editThe Purus red howler Alouatta puruensis is a species of howler monkey native to Brazil Peru and north of Bolivia 11 Peckoltia brevis a kind of catfish is found in the middle and upper Amazon within the Purus river basin 12 13 Most of the central and lower sections of the river flow through the Purus varzea ecoregion 14 In the municipality of Tapaua Amazonas the river flows through the 233 864 hectares 577 890 acres Abufari Biological Reserve a strictly protected area 15 Earthworks discovery editIn 2008 a previously unknown pre Columbian civilization was discovered in the upper region of the river close to the Bolivian border After much of the forest in the region was cleared for agricultural use satellite pictures revealed the remains of large geometric earthworks 16 See also editAmazon rainforest Esperanza Ucayali Brazilian Amazon Peruvian Amazon River basin Catauxi Portals nbsp Environment nbsp Ecology nbsp Geography nbsp Brazil nbsp PeruReferences edit a b c Peru Anuario de Estadisticas Ambientales 2022 PDF 2022 a b PLANO ESTADUAL DE RECURSOS HIDRICOS DO AMAZONAS PERH AM RT 03 DIAGNoSTICO PROGNoSTICO E CENARIOS FUTUROS DO RECURSOS HIDRICOS DO ESTADO TOMO III PDF Jan 2019 Archived from the original PDF on 2021 05 06 Retrieved 2021 10 03 Molinier M et al 22 November 1993 Hydrologie du Bassin de l Amazone PDF in French Archived PDF from the original on 7 October 2016 Retrieved 16 July 2017 a b Michael T Coe Marcos Heil Costa Aurelie Botta Charon Birkett 23 Aug 2002 Long term simulations of discharge and floods in the Amazon Basin CiteSeerX 10 1 1 549 3854 FLONA de Santa Rosa do Purus in Portuguese ISA Instituto Socioambiental retrieved 2016 06 21 RESEX Arapixi in Portuguese ISA Instituto Socioambiental retrieved 2016 09 08 FLONA do Purus in Portuguese ISA Instituto Socioambiental retrieved 2016 09 08 RESEX Medio Purus in Portuguese ISA Instituto Socioambiental retrieved 2016 09 03 RESEX Canutama in Portuguese ISA Instituto Socioambiental retrieved 2016 09 02 RDS Piagacu Purus in Portuguese ISA Instituto Socioambiental retrieved 2016 08 20 Cornejo F M Boubli J P Alves S L Bicca Marques J C Cortes Ortiz L Calouro A M de Melo F R 2021 Alouatta puruensis IUCN Red List of Threatened Species 2021 e T136787A190430767 doi 10 2305 IUCN UK 2021 1 RLTS T136787A190430767 en Retrieved 11 November 2021 Planet catfish Fish Base Purus varzea Global Species Myers Enterprises II retrieved 2017 03 15 Unidade de Conservacao Reserva Biologica do Abufari in Portuguese MMA Ministerio do Meio Ambiente retrieved 2016 04 24 Martti Parssinen Denise Schaan Alceu Ranzi Pre Columbian geometric earthworks in the upper Purus a complex society in western Amazonia Antiquity Volume 83 2009 p 1084 1095 Purus River 2010 In Encyclopaedia Britannica Retrieved January 12 2010 from Encyclopaedia Britannica Online External links editMap of Amazon State with Purus River Brazilian Ministry of Transport Peru Preserves Biodiversity in Vast New Park Environment News Service 1 April 2005 Retrieved 5 November 2014 Alto Purus National Park Enjoy Peru Archived from the original on 17 May 2008 Retrieved 5 November 2014 Retrieved from https en wikipedia org w index php title Purus River amp oldid 1219924536, wikipedia, wiki, book, books, library,

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