2024: Climate Change, GLOF impact on Safety of Hydro, Dams in India

January 6, 2025January 11, 2025 SANDRPLeave a comment

(Powerhouse of a hydro project ravaged by cloudburst induced flashflood in Sutlej basin Shimla, Himachal Pradesh in Aug 2024. Image Source: Social Media)

This 2024 annual overview focusses on important reports highlighting the safety and sustainability issues of the hydro and dam projects in India in 2024 in the context of Climate Change, including Glacier melt and GLOFs. The compilation shows that the climate change driven extreme weather events have become significant threat for the structural safety of these projects.

This is even more relevant in inherently vulnerable areas like the Himalayas and Western Ghats from the point of view of seismic activity, young erosion prone mountain, flash floods, avalanches and landslides. Here the impact of climate change effects like more intensified hydrological cycles, cloud bursts, reduction in snow fall, glacier melts and GLOF (Glacier Lake Outburst Flood) increase the vulnerability including landslide dams and avalanche dams.

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Hydro Disaster

Himachal Pradesh: Damages at Luhri-I HEP Reveals Loopholes in Dam Safety Act

July 13, 2024July 14, 2024 SANDRPLeave a comment

(Feature Image: Screenshot of Local News India July 06, 2024 video report showing Luhri-I HEP tunnel outlet flooded after rise in Satluj water level.)

The controversial under construction Luhri Hydroelectric Project (HEP) Stage-I is being developed by Sutlej Jal Vidyut Nigam Limited (SJVNL) on Sutlej river near village Nirath village in Shimla and Kullu districts of Himachal Pradesh. The 210 MW HEP involves construction of an 80 m high concrete gravity dam with six bay gated spillways, a 567 m long horse shoe shaped diversion tunnel, two coffer dams, a surface power house, intake structure and penstocks among other parts.

The project would require 149.07 ha land including of 98.10 ha forest land and 50.97 ha private land. The project dam would create 6 km long reservoir area submerging 100.23 ha of land comprising of 63.52 ha of forest and 36.7 ha of private land. 39.47 ha of the submergence area is riverbed land.

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Yamuna River

Uttarakhand: Aug 2023 Landslide Renders Jakhan in Yamuna Valley Inhabitable

August 28, 2023August 29, 2023 SANDRPLeave a comment

(Feature Image: Landslide damaged homes in Jakhan village, Dehradun. Image source: Social Media)

The Jakhan village in Yamuna valley suffered a huge landslide in noon hours of August 16, 2023. The village is populated by 28 families. The incident has reportedly damaged 10 houses and 07 cowsheds fully and 02 houses partially apart from impacting a power transmission tower of Power Transmission Corp of Uttarakhand Ltd (PTCUL) forcing the villagers to take refuge in nearby primary school of village Pashta.

The village is part of Binhar region situated about 5 km uphill the power station of 120 Mw Vyasi Hydro Electric Power (HEP) Project on Yamuna river. The Vyasi Project is in Hathyari village of Vikas Nagar tehsil in Dehradun district. Before the fateful incident, the area had witnessed prolonged rain spells and the villagers had seen small cracks around the village.

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