Sept. 2026: NHPC’s Parbati-II HEP Tunnel Leakage in Himachal Pradesh

September 23, 2026September 23, 2026 SANDRPLeave a comment

(Feature Image: A damaged house in Palchara village by debris flood after a leak in the Parbati II HEP tunnel on Sept. 19, 2026 in Sainj Valley. Source: The Tribune)

The Sept. 2026 tunnel leakage at NHPC’s Parbati-II HEP in Kullu’s Sainj Valley triggered a sudden flow of water, muck and debris towards Palchara village. Although there was no loss of life, the incident has damaged houses, agricultural land and local infrastructure. It occurred amid a series of leakage and seepage incidents reported in and around the project in recent years, raising renewed concerns over tunnel safety, muck dumping and slope stability in the project area.

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Highest Flood Level · Rivers

Rivers Crossing Highest Flood Levels in August 2026

September 9, 2026 SANDRPLeave a comment

(Feature Image: Yamuna river near ISBT, Delhi on Aug. 23, 2026. BS Rawat/SANDRP)

In the third month of the 2026 southwest monsoon season, we have been able to document rivers breaching their respective Highest Flood Levels (HFLs) at least at 10 Central Water Commission (CWC) flood monitoring sites. These sites are spread across five river basins and four states mainly in central and east India.

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Floods · Ganga · Rivers · Urban Flood · Urban Rivers

Aug-Sep 2026: Mandakini Flood Disaster in Chitrakoot

September 4, 2026September 4, 2026 SANDRPLeave a comment

(Feature Image: Screengrab of drone video capturing severe flood spell in Mandakini river in Chitrakoot town, Satna on Aug. 29, 2026. Source: Hindustan Samachar)

The Mandakini (Paisuni) river has witnessed a major flood event in the pilgrimage town spread across Satna and Chitrakoot districts of Madhya Pradesh and Uttar Pradesh during August 28-30, 2026. The deluge was triggered after prolonged heavy rainfall in the upper hilly catchment of river, which broke records set 23 years ago. The flood spell has killed two people and left one missing in addition to causing widespread damage to public and private properties.

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Climate Change · Dams · Floods · Gandak · Hydropower · Nepal

Nepal Disaster and Hydropower: How Global Banks Downplayed the Risks they Knew

August 29, 2026August 29, 2026 SANDRPLeave a comment

On the 28th August 2026, Nepali officials roughly doubled their tally of missing people to over 1,900, saying hydropower producers had only recently shared a count of unaccounted-for workers at projects in the devastated river valleys. It is feared that over 900 people are missing from hydropower projects.

This might be a watershed moment for the disaster-torn hydropower boom in South Asia, funded many times by International Financial Corporations and Multilateral Banks like ADB and World Bank, and also Chinese Exim bank.

Hundreds of hydropower labourers, engineers and locals are currently trapped inside tunnels of projects like Upper Trishuli 1 and Trishuli 3A, the latter funded by a loan from China’s Exim bank in the flood ravaged Nepal. More than 350 have been rescued by the valiant efforts of Nepal Army, but many more are still trapped inside the tunnel, including Indians.

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Climate Change · Dam floods · Floods · Gandak · Himalayas

Himalayan Disaster: August 2026 Bhote Koshi Deluge

August 28, 2026August 28, 2026 SANDRPLeave a comment

On the morning of Wednesday, August 26, 2026, one of the most severe high-mountain fluvial disasters struck the transboundary Tibet–Nepal frontier. By now we have seen the terrifying and incomprehensible footage of the disaster.

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Alaknanda · Climate Change · Disasters · Ganga · Himalayas · Hydro Disaster

Aug 2026: Eleven Killed in THDC’s Vishnugad-Pipalkoti HEP Tunnel Disaster

August 17, 2026August 26, 2026 SANDRPLeave a comment

(Feature Image: Rescuers using make shift raft made of plastic drums to search for the missing workers inside flooded Vishnugad-Pipalkoti HEP. Source: Amar Ujala/Aug. 14, 2026)

At least eight workers have been killed in a major disaster inside the tunnel of under-construction Vishnugad Pipalkoti Hydroelectric Project (HEP) on Aug. 13, 2026 in Uttarakhand. The incident occurring between 6:30 and 7:00 pm inside the project’s Tail Race Tunnel (TRT) near Mayapur area in Chamoli district, has also left 12 workers injured and two still missing. The rescued workers have sustained fractures and other trauma injuries and are currently under treatment. The disaster happened about 1.5 km inside the 3 km long TRT, being constructed between Durgapur to Siyasain area in Pipalkoti.

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Floodplain · Floods · Urban Rivers · Yamuna River

Yamuna Manthan Aug 2026: Floodplains remain under threat

August 13, 2026August 13, 2026 SANDRPLeave a comment

(Feature Image: Map showing the temporal changes in the Yamuna river courses for years 1990, 2007, 2014 and maximum possible/ visible extents of the associated floodplains for years 1807, 1952, 1980, 1990, 2007 and 2014; digitized from the toposheets compiled from Survey of India, IRS 1C LISS III imageries and Google Earth images. Credit: Constriction of the Yamuna River Floodplains within Delhi Region since 19th Century: A Serious Concern)

Three recent studies have once again highlighted both the severe degradation of the Yamuna and the critical role of its floodplain in Delhi. Their findings make it clear that cleaning sewage alone will not revive the river. Protecting natural flows, restoring floodplain connectivity and conserving wetlands are equally important for reducing flood risk, recharging groundwater and sustaining the river’s ecology. Undoubtedly, the Yamuna floodplain has already suffered extensive encroachment, fragmentation and ecological damage due to weak governance.

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Floods · Highest Flood Level · Rivers

July 2026: Rivers Crossing Highest Flood Levels

August 6, 2026September 27, 2026 SANDRPLeave a comment

(Feature Image: Yamuna river at Kalanaur flood monitoring station in Saharanpur on March 31, 2025. SANDRP)

In July 2026, SANDRP has documented Highest Flood Level (HFL) breaches at least at 15 flood monitoring sites of Central Water Commission (CWC) in India. These 15 sites are spread over 7 river basins, with maximum 4 sites in Brahmaputra basin followed by 3 sites each in Brahmani & Baitarani and Mahanadi basin, 2 sites in West Flowing Rivers from Tapi to Tadri basin and at 1 site each in Ganga, Narmada and Tapi river basin.

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Beas · Himalayas · Landslide dam

July 2026: Flood Threat from Landslide Lake in Sainj Valley, Himachal Pradesh

August 1, 2026 SANDRPLeave a comment

(Feature Image: Google Earth image marks locations mentioned in the report along landslide lakes and nearby hydropower infrastructure in the Sainj Valley. The red circle marks the probable location of the landslide lake on Jiva nullah, while the yellow circle indicates the landslide lake that formed on Varshanu nullah in June 2025. The numbered locations represent: (1) 1 MW Jiva Small HEP, (2) 100 MW Sainj HEP powerhouse, (3) 800 MW Parbati-II HEP powerhouse and (4) the dam of the 520 MW Parbati-III HEP.)

Fresh landslides and the continued expansion of a landslide-dammed lake on Jiva nullah in the Sainj Valley of Kullu district, Himachal Pradesh, have once again raised concerns over a potential downstream flood disaster. Although no official estimate of the lake’s area or stored water volume has been made public, local residents say the impounded water body has expanded steadily over the past three years.

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Chenab · Climate Change · Himalayas · Hydro Disaster

July 2026: Chenab Flood Damages Ratle HEP Coffer Dam in J&K

July 30, 2026July 31, 2026 SANDRPLeave a comment

(Feature Image: Flood spell in Chenab river overtopping and damaging part of cofferdam at 850 MW Ratle HEP in Kistwar, J&K. Source: Greater Kashmir).

The cofferdam of Ratle Hydroelectric Project (HEP) was partially damaged due to a floods in Chenab river on July 23, 2026. The 850 MW project is under construction near Drabshalla village in Kishtwar district of Jammu & Kashmir. The cofferdam was built to divert river flows and facilitate construction of the main concrete gravity dam.

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