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Rio Cautário, Rio Guaporé affluent, Madeira, Brazil
Brazil, Rondônia, Conceição - Príncipe da Beira, Costa Marques
Rio Cautário River is a river of Rondônia state in western Brazil. It is a right tributary of the Guaporé River. The Cautário River rises in the Uru-Eu-Wau-Wau Indigenous Territory. It is fed by streams from the 650m (2,130 ft) Serra Uopianes and the 750m (2,460 ft) Serra Pacaás Novos.
The river runs in a southwest direction, forming the boundary between the Rio Cautário Federal Extractive Reserve and the Rio Cautário State Extractive Reserve. It flows into the Guaporé/Mamoré river, which in turn feeds the Madeira River at the city of Nova Mamoré.
- Submitted by
- Abhineet Prakash Anand
- Approved by
- Roberto E. Reis & Pablo C. Lehmann
- GPS
- -12.2068195, -64.5939102
- Geographical region
- South America
- Drainage Basin
- Rio Amazonas
- River catchment
- Rio Madeira
- Water body type
- River
- Water body name
- Cautario
- Water body part
- Meander
- Water body course
- Lower course
- Water body: tributary of
- Rio
- Tributary name
- Guaporé
Videos above and below water
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Water Chemistry
Water information
- Water type
- fresh-water
- Water color
- Clear water
- Water transparency
- Concentration of sediments
- Low
- Water temperature
- 18-30 °C
- Water flow/curent
- Slow
Chemical parameters
- pH
- 6.8
- Conductivity
- 80
- GH
- 17.8 mg/l
- dGH
- KH
- 1 mg/l
- dKH
- Dissolved Oxygen
Substrate in nature
- Sand
- Beige
- Pebble/Gravel
- Mixed
- Stone
- Brown
- Stone form
- Irregular
- Silt/Mud
- Beige
- Leaves
- Few
- Driftwood
- Many
- Submerged terrestrial vegetation
- Yes
Aquatic Biotope
- Date of collecting
- 27 February, 2024
- Collecting area
- River bank
- Water depth
- 1,0m
- Air temperature
- 32 °C
- Sunlight
- Full sun
Environment
- Environment
- Untouched
- Surrounding area
The most rugged stretch is between Redenção e Bom Destino. It is navigable, even in the middle section around Bom Destino, but only in the rainy season. During the dry season the river bed has extensive sandbanks. It has rapids, but always with a drop of less than 2m (6.7ft).
- Underwater landscape
Aquatic vegetation found is Pontederia azurea, Echinodorus spp., Ludwigia spp., Cabomba furcata, Myriophyllum sp., Hydrocotyle leucocephala, Elodea najas, Salvinia auriculata, Pistia stratiotes, Cyperus sp. and many more depends of water mark during high and low water levels. Although in dry warm season it only has sandy bottom with driftwoods and rocks.
- Threats to ecology
The Cautário River has clear waters fed by a region without major deforestation and silting of the river’s margins.
Riparian zone
- Trees near the aquatic habitat
-
Many -
