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Rio Olho d’água, the tributary of Rio da Prata, Brazil

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Brazil, Mato Grosso do Sul

Rio Olho d’água is the tributary of Rio da Prata, which is located in Mato Grosso do Sul, on the border with Bonito. The region is one of the most important eco-tourism areas in Brazil with its crystal-clear waters and beautiful natural landscapes such as waterfalls, caves and forests.

The Rio da Prata River is the third clean river in the world. In addition to hiking through the rainforest and watchiing 234 species of birds, you can snorkel in the lower reaches of the river and enjoy as many as 56 species of fish.

Submitted by
Nan Li
Approved by
Heiko Blessin & Nathan K. Lujan
GPS
-21.4352036, -56.4314423
Geographical region
South America
Drainage Basin
Rio da Prata
River catchment
Rio Olho d'água
Water body type
River
Water body name
Rio Olho d'água
Water body part
Water body course
Source
Water body: tributary of
River
Tributary name
Rio da Prata

Videos above and below water

Water Chemistry

Water information

Water type
Fresh water
Water color
Clear water
Water transparency
High
Concentration of sediments
Low
Water temperature
24 °C
Water flow/curent
Slow

Chemical parameters

pH
7.4
Conductivity
GH
KH
Dissolved Oxygen

Substrate in nature

Sand
White
Pebble/Gravel
no
Stone
no
Stone form
Silt/Mud
no
Leaves
Many
Driftwood
Many
Submerged terrestrial vegetation
no

Aquatic Biotope

Date of collecting
Collecting area
Water depth
1,0m
Air temperature
Sunlight
Partial shade

Environment

Environment
Untouched
Surrounding area

Rio Olho d’água is the tributary of Rio da Prata, which is located in Mato Grosso do Sul, on the border with Bonito. The region is one of the most important eco-tourism areas in Brazil with its crystal-clear waters and beautiful natural landscapes such as waterfalls, caves and forests.

The Rio da Prata is the third clean river in the world. In addition to hiking through the rainforest and watchiing 234 species of birds, you can snorkel in the lower reaches of the river and enjoy as many as 56 species of fish.

Underwater landscape

There are a lot of limestone on the surface of the riverbed. Since the river water is naturally filtered by limestone and impurities are deposited in the riverbed, the water is so clear and transparent. The substrate of the river is fine white sand, which makes the river clear and transparent.

There are a large number of Heteranthera zosterifolia distributed in particular area of the river, which gives the inhabited fish a space to escape and reproduce, and also provides a large number of food sources. However, there are no plants in most area of the river.

Roots, branches and leaves fall to the river and gather in the slow-flowing area, which provide shelter and additional food source for inhabited fishes such as:

Characidae:

  • Aphyocharax rathbuni
  • Hyphessobrycon herbertaxelrodi
  • Hyphessobrycon eques

 

Threats to ecology

With the continuous expansion of human activities, a large number of rainforests have been felled, and the habitat of living things has been severely damaged, seriously affecting the ecological balance of the earth. Rio da Prata’s (including Rio Olho d’água) excellent management of tourism activities has become the flag of Brazil. Not only the number of tourists is restricted, but also the application of sunscreen and mosquito repellent water before launching, which provides an effective guarantee for the ecological stability and species diversity of the Rio da Prata.

Riparian zone

Trees near the aquatic habitat
Many - Not identified