Pará River

This article is about the river in Pará. For the river in Minas Gerais, see Pará River (Minas Gerais). For the river in Russia, see Para River (Russia). For rivers in Australia, see Para River.

The Pará River (Portuguese: Rio Pará), also called Parauaú River, Jacaré Grande River, Marajó River Channel, Macacos River Channel, Santa Maria River Channel and Bocas Bay, is a watercourse and immense estuarine complex that functions as a canal between the rivers Amazon (Amazon delta), Tocantins, Campina Grande (or Portel Bay) and Marajó Bay, in addition to numerous other smaller rivers. It can also be considered a distributary channel of the Tocantins River.

Pará River
View of the Pará River in Brazil
Location
Country	Brazil
Physical characteristics
Source
• location	Pará state
Length	320 km (200 mi)
Basin size	1,000,000 km^2 (390,000 sq mi)
Discharge
• location	Confluence of Tocantins River, Marajó Bay (Basin size 72,817 km^2 (28,115 sq mi)
• average	9,249 m^3/s (326,600 cu ft/s)^[1]
Discharge
• location	Atlantic Ocean, Marajó Bay (near mouth)
• average	20,946 m^3/s (739,700 cu ft/s)^[2] ~664 km^3/a (21,000 m^3/s)^[3]
Basin features
Tributaries
• left	Breves channel
• right	Tocantins, Guamá

It is located in the state of Pará, Brazil. It presents muddy and turbid waters, rich in sediments originating from its source rivers.

Runs for approximately 64 kilometres (40 mi), around the west and south of the island of Marajó. Belém, the state capital of Pará, is located near the south bank of the river.

Previously academic research has come to consider this watercourse as a distributary channel of the Amazon River. However, this statement is currently considered unlikely, since recent studies have shown the small contribution of the waters of the Amazon River to the formation of the Pará River,^[4] with a greater contribution from the Tocantins River.

See also

• List of rivers of Pará

References

1. Prestes, Yuri Onça; Borba, Thais Angélica da Costa; Silva, Alex Costa da; Rollnic, Marcelo (2020). "A discharge stationary model for the Pará-Amazon estuarine system". Journal of Hydrology: Regional Studies. 28: 100668. doi:10.1016/j.ejrh.2020.100668. S2CID 213143882.
2. Prestes, Yuri Onça; Borba, Thais Angélica da Costa; Silva, Alex Costa da; Rollnic, Marcelo (2020). "A discharge stationary model for the Pará-Amazon estuarine system". Journal of Hydrology: Regional Studies. 28: 100668. doi:10.1016/j.ejrh.2020.100668. S2CID 213143882.
3. Prestes, Yuri Onça; Borba, Thais Angélica da Costa; Silva, Alex Costa da; Rollnic, Marcelo (2020). "A discharge stationary model for the Pará-Amazon estuarine system". Journal of Hydrology: Regional Studies. 28: 100668. doi:10.1016/j.ejrh.2020.100668. S2CID 213143882.
4. Callède, Jacques (2010). "Les apports en eau de l'Amazone à l'Océan Atlantique". Revue des Sciences de l'EAU. 23 (3): 247–273. doi:10.7202/044688ar.

Coordinates: 1°43′43″S 49°10′34″W / 1.72871°S 49.1762°W / -1.72871; -49.1762