Why in the news?

Climate Change is disrupting Jiadhal River’s (Dhemaji district, Assam) tranquil flow, leading to unprecedented shifts in its course and causing upheaval for residents.

About Jiadhal River:

It flows through the districts of Darrang, Udalguri, and Baksa in the northeastern state of Assam.
- It is also known Kumotiya River after flowing from Gogamukh.
Origin: From the Hills of Bhutan, flows through the Assam Himalayas before meandering through the plains of Assam. It is formed by the confluence of several smaller streams.
Major tributaries: Kolong River and the Daokao River.
It eventually joins the Brahmaputra River near the town of Nalbari.
It is known as the ‘Sorrow of Dhemaji’ for the heavy damage caused by annual floods and erosion.

Erosion: Flowing water gradually wears away the riverbanks and bed, causing the river to meander and change course.
Sediment deposition: Accumulation of sediment can create new channels or alter the flow pattern of the river.
Human activities: Dams, channelization, urbanization, deforestation, and mining can disrupt natural river processes, leading to changes in flow and morphology.
Climate change: Changes in precipitation, temperature, and glacier melt affect river flow patterns and behavior.
Tectonic activity: Uplift, subsidence, and faulting influence river topography and drainage patterns, leading to adjustments in course and behavior.

[2017] With reference to river Teesta, consider the following statements:

1. The source of river Teesta is the same as that of Brahmaputra but it flows through Sikkim.

2. River Rangeet originates in Sikkim and it is a tributary of river Teesta.

3. River Teesta falls into Bay of Bengal at the border of India and Bangladesh.

Which of the statements given above is/are correct?

(a) 1 and 3 only

(b) 2 only

(d) 1, 2 and 3