Rio Anapu

from Wikipedia, the free encyclopedia
Rio Anapu
Satellite image

Satellite image

Data
location Pará State , Brazil
River system Rio Anapu
muzzle at Portel via the Baía do Melgaço in the Rio Pará (Bay of the Atlantic ) Coordinates: 1 ° 53 ′ 36 ″  S , 50 ° 50 ′ 36 ″  W 1 ° 53 ′ 36 ″  S , 50 ° 50 ′ 36 ″  W

length 460 km
Left tributaries Rio Pracaí
Right tributaries Rio Tueré
Flowing lakes Baía de Pracaí, Baía de Caxiuanã , Baía de Pacajaí

The Rio Anapu [ˌχiu‿anɐˈpu] is an approximately 460 km long river in Brazil , which has its source around 90 kilometers south of Anapu in the Brazilian state of Pará .

River course

The river drains a hilly area covered by dense tropical rainforest . From about fifty kilometers below the source, cultivated land and large cleared areas accompany the banks of the river, all the way to the municipality of Anapu. As the Rio Anapu Alto, the river forms several waterfalls and rapids and widens in the lower reaches to a lake, which is divided into three sub-basins by narrow passages ( Baia de Pracaí , Baia de Caxiuana , Baia Pacajaí ). After a sharp right bend into the hill country, the river leaves the lake eastwards and flows together with the Rio Pacajá near the city of Portel into the Baía do Melgaço , a lake that already belongs to the tidal area of ​​the Rio Pará bay .

The lake basin in the lower reaches of the Rio Anapu, which is almost at sea level, was dammed back about 6000 years ago by the sedimenting Amazon during the post-glacial sea level rise, and the Anapu now leaves the lake via the former watershed to the Rio Pacajá with almost no gradient to the east. Two more tidal waterways branch off from the lake ( Furo da Laguna to the northeast and Furo do Pacajaí to the southeast). You thereby separate two large islands; the Ilha da Laguna to the left of the Anapú and on the right bank the Ilha grande do Pacajaí. Occasionally, floods of the Amazon also reach the Rio Anapú via the Furo da Laguna, which is thus temporarily included in its river system .

The largest tributaries

  • Rio Tueré (right)
  • Rio Pracaí (left)

See also

Individual evidence

  1. ^ Hermann Behling, Marcondes Lima da Costa: Holocene Environmental Changes from the Rio Curuá Record in the Caxiuana Region, Eastern Amazon Basin , Quaternary Research 53, 369-377 Washington 2000
  2. ^ Kümmerly + Frey Rand McNally: International Atlas . Published by Georg Westermann Verlag ISBN 3-07-508962-1