Uttarakhand flood

Uttarakhand flood: Temporary lake formed due to blocking of stream joining Rishi Ganga

The particles added with the aid of way of the avalanche in Uttarakhand in the past this week has blocked a circulate that joins the Rishi Ganga river forming a short lake which if breached can reason in a similar way injury in the valley, referred to a document through the Wadia Institute of Himalayan Geology.

The Central Water Commission, in a tweet, said, ”An synthetic Lake has normal on river Rishiganga in Chamoli district, Uttarakhand, with a dimension of 350 m pinnacle of 60 m with slope of 10 deg.” The Chamoli district administration has issued an alert asking human beings to maintain away from going to the banks of the river. Satellite snap photographs of the glacial lake advise it has formed on the confluence of Raunthi Gad and Rishi Ganga.

Chief Minister Trivendra Singh Rawat stated the depth of the glacial lake is no longer known, and requested human beings now not to panic alternatively preserve caution.

According to Wadia Institute of Himalayan Geology (WIHG) director Kalachand Sain, a team of scientists from the institute carried out an aerial survey of the pinnacle reaches of the Rishi Ganga sincerely a day after the Sunday avalanche and seen the new glacial lake there.

The group took some snap shots of the lake from a helicopter. It appears that the modern-day avalanche has led to its formation in the higher stretches of the Rishi Ganga’s catchment area, he said.

”Our scientists are analyzing the dimension of the lake, its periphery and the volume of water it accommodates to affirm how huge and immediately the chance from it is,” Sain advised PTI.

According to the file with the aid of way of the Wadia Institute of Himalayan Geology (WIHG), an business company of the Department of Science and Technology, the assessment of the authentic magnitude of threat involved due to this impoundment of water requires a particular survey.

”The catastrophic floods on Sunday additionally added sediments in the Rishi Ganga river. Since the width of the river is very a great deal much less in the pinnacle stretches, the sediments have blocked a movement forming a lake which may additionally breach and intent in a similar way harm in the valley,” Sain said.

An element of the Nanda Devi glacier broke off in Uttarakhand’s Chamoli district on Sunday, triggering an avalanche and a deluge in the Alaknanda river gadget that washed away hydroelectric stations and endangered lives of human beings dwelling alongside the banks.

According to WIHG, a mass of rock weakened over a duration of time due to freezing and thawing of snow have to have led to the creation of a ”weak zone” triggering its fall down which delivered down sediments. The avalanche used to be once moreover accompanied with the aid of a thick pack of snow and ice that overlaid the rock surface, it stated.

This resulted in the formation of a short dam that eventually breached, inflicting the deadly floods in Chamoli district on Sunday.

The incident passed off adjoining to the Raunthi glacier. The region moreover has glaciers that feed the Rishi Ganga river, which finally joins the Dhauli Ganga.

The steep slopes of the mountains in the neighborhood in addition accelerated the depth of the crash. The stretch of the avalanche was once about three kilometers with an frequent slope of 37 degrees, in the past than undertaking the ”Raunthi Nala/Gadhera” flooring at an altitude of about 3,600 meters.

Meanwhile, Chamoli District Magistrate Swati S Bhadauria noted an eight-member crew of the scientists of the Geological Survey of India has been fashioned to take a look at out the lake and post its document to the district administration at the earliest.




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