Kameng River

In News 

• The Kameng river is changing colour which has turned black and muddy.

About

• It is a major tributary of the Brahmaputra river in Arunachal Pradesh’s East Kameng district.
• Called Jia Bhorelli in Assam.
• It is a lifeline for many and has its source in a glacial lake near the Nyegi Kangsang, one of the highest mountains in Arunachal Pradesh.
• Concerns: 
  • It continues to remain black, muddy and unsuitable for use.
  • The water was reporting a high level of turbidity (suspended particulates in a liquid) leading to the change in colour.
  • This depletion in oxygen levels had led to the death of thousands of fish.
• Reasons: 
  • Some sort of a landslide/avalanche in the upper reaches of the river.
  • There was intense erosion along the Warriyang Bung — a tributary of the river upstream in the Khenewa Circle — which had led to the deposition of mud, debris, boulders and trees that the river carried downstream.

Source: IE