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Shimla, Aug 4 While cloudbursts and flash floods in recent years have become a regular feature in the hill state of Himachal Pradesh, the loss of life caused by natural calamities can be mainly attributed to the increasing human interference, particularly in eco-sensitive Himalayan zones.Experts told on Wednesday that since mountains in Himachal Pradesh are part of Himalayan range that are young and fragile in nature, creating cracks and fractures in the rock could widen in future and create a rockfall or slope failure zone a phenomenon in which a slope collapses abruptly under the influence of rainfall or an earthquake.They say anthropological intervention along with climate change have worsened it further. Be it development of hydropower projects or tunnels or roads.Seven people died in the exceptionally high rainfall across the cold desert of Lahaul-Spiti district on July 27-28. Keylong and Udaipur subdivision of the district faced 12 incidents of flash flood after a cloudburst in which the Tozing Nallah impact was devastating, says a government report.Two days before this disaster, nine people were killed by a landslide in Kinnaur district as boulders fell and hit the vehicle they were travelling in.Both Lahaul-Spiti and Kinnaur fall in the Himalayan ranges, known for geological and ecological vulnerability.This monsoon the heavy rains also caused major landslides in the state's Kangra district, claiming 10 lives. Terrifying videos capturing massive landslides in Sirmaur district are common these days.Explaining why flooding and landslides are common in the hill states, Y.P. Sundriyal of the Department of Geology with Hemwati Nandan Bahuguna Garhwal University in Uttarakhand said, "Higher Himalayas, both climatically and tectonically, are highly sensitive, so much so, that at first stance the construction of mega hydro-projects should be avoided."Or else they should be of small capacity. Secondly, the construction of roads should be done with all scientific techniques. At present, we just see roads are being made or widened without taking proper measures such as no slope stability, lack of good quality retaining wall and rock bolting. All these measures can restrict the damage done by landslides up to some extent."Citing a huge gap between planning and implementation, Sundriyal said for instance rainfall patterns are changing, temperatures have been increasing along with extreme weather events."There is no denying about the fact of development but hydropower plants, especially in higher Himalayas, should be of less capacity," he added.Environmental activists claim the state's policy of promoting mega hydropower projects is being implemented in a fragile and eco-sensitive zone, without an appreciation of the cumulative impact of the works.They say more than 140 hydropower projects have been allocated in the Sutlej basin and disasters like the ones in Chamoli and Kedarnath are in the making.They demand a moratorium on the construction of all new hydropower projects located in the Sutlej and Chenab river basins until a study on the cumulative impact of the projects on the fragile ecology and livelihoods is done.Saying urbanisation has led to decrease in soil infiltration capacity, resulting in floods, Central Water Commission DirectorDisclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Department of geology, Latest News

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