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Paraíba do Sul
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Paraíba do Sul
The Paraíba do Sul (Brazilian Portuguese pronunciation: [ˈʁi.u paɾaˈibɐ du ˈsuw]), or simply Paraíba, is a river in southeast Brazil. It flows 1,137 km (706 mi) west to northeast from its farthest source at the source of the river Paraitinga to the sea near Campos dos Goytacazes. The river receives its name when it meets the river Paraibuna at the Paraibuna dam.
Its main tributaries are the rivers Jaguari, Buquira, Paraibuna, Preto, Pomba and Muriaé. These last two are the longest and join the main river 140 km (87 mi) and 50 km (31 mi) from the mouth respectively .
The valley of the Paraíba do Sul ranges from the latitudes 20°26' and 23°39'S and the longitudes of 41° and 46°30'W and covers an area of about 57,000 km2 (22,000 sq mi) distributed over three states. The main economic activities are industry and cattle raising.
Presently only two parts of the river can be navigated:
Elsewhere navigation is hampered by various obstacles; waterfalls, rapids, sections with great declivity and various hydroelectric works with no locks. Other factors impeding navigation are the existence of highway and railway bridges, the proximity of roads and railways following the riverbank and the location of several cities on its banks.
The Paraíba Valley is very fertile and has always been a region of relatively dense population. Cities located on or near the river are
Unlike rivers in northern Brazil where seasonal variations in water temperature generally are relatively limited, those in southern Brazil, such as Paraíba do Sul, exhibit distinct differences between winter and summer. During a survey of the river in Lorena, São Paulo, the water varied from 26.6 °C (79.9 °F) in the summer to 15.2 °C (59.4 °F) in the winter. The pH is neutral and generally fluctuates between 6 and 8.
The Paraíba do Sul basin is home to just above 100 native fish species with most in the families Loricariidae, Characidae and Trichomycteridae. About 40% of the fish species in the river basin are endemic (the genus Oligobrycon is entirely restricted to the basin) and new species have been discovered in recent years, including the small catfish Pareiorhina hyptiorhachis that only was scientifically described in 2013.
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Paraíba do Sul
The Paraíba do Sul (Brazilian Portuguese pronunciation: [ˈʁi.u paɾaˈibɐ du ˈsuw]), or simply Paraíba, is a river in southeast Brazil. It flows 1,137 km (706 mi) west to northeast from its farthest source at the source of the river Paraitinga to the sea near Campos dos Goytacazes. The river receives its name when it meets the river Paraibuna at the Paraibuna dam.
Its main tributaries are the rivers Jaguari, Buquira, Paraibuna, Preto, Pomba and Muriaé. These last two are the longest and join the main river 140 km (87 mi) and 50 km (31 mi) from the mouth respectively .
The valley of the Paraíba do Sul ranges from the latitudes 20°26' and 23°39'S and the longitudes of 41° and 46°30'W and covers an area of about 57,000 km2 (22,000 sq mi) distributed over three states. The main economic activities are industry and cattle raising.
Presently only two parts of the river can be navigated:
Elsewhere navigation is hampered by various obstacles; waterfalls, rapids, sections with great declivity and various hydroelectric works with no locks. Other factors impeding navigation are the existence of highway and railway bridges, the proximity of roads and railways following the riverbank and the location of several cities on its banks.
The Paraíba Valley is very fertile and has always been a region of relatively dense population. Cities located on or near the river are
Unlike rivers in northern Brazil where seasonal variations in water temperature generally are relatively limited, those in southern Brazil, such as Paraíba do Sul, exhibit distinct differences between winter and summer. During a survey of the river in Lorena, São Paulo, the water varied from 26.6 °C (79.9 °F) in the summer to 15.2 °C (59.4 °F) in the winter. The pH is neutral and generally fluctuates between 6 and 8.
The Paraíba do Sul basin is home to just above 100 native fish species with most in the families Loricariidae, Characidae and Trichomycteridae. About 40% of the fish species in the river basin are endemic (the genus Oligobrycon is entirely restricted to the basin) and new species have been discovered in recent years, including the small catfish Pareiorhina hyptiorhachis that only was scientifically described in 2013.
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