Clearwater Rivers or Bluewater rivers are bodies of clear water that are commonly found in high rocky regions, usually flowing as creeks and streams. It is rare to sight these rivers in lowland rainforests. The best-known example of a clearwater river is the Xingu River in Brazil.
Bluewater Rivers are rapid moving. The rivers gain momentum as the water falls across these elevated rocky heights, giving rise to rapid currents. The ancient rocks have eroded so much over the years that the amount of sediment deposit washed away with the current is also minimal. Hence, the river water is clear almost all the time.
Clearwater Rivers are not acidic and are rich in dissolved minerals. Plants and animals thrive well because of this high nutrient content and lesser acidic composition. Algae too, grow in abundance on these rocky masses which forms a major source of nourishment for the aquatic sucker-mouth catfish.
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