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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Yamuna River

Yamuna Manthan 0926: River Cities Failing to Protect, Sustain Water Resources

September 12, 2026 SANDRPLeave a comment

(Feature Image: A tanker discharging untreated sewage in an open area near Yamuna river close to Mokshdham in Vrindavan. Source: Amar Ujala, Sept. 10, 2026)

Multiple reports over the past month again highlight serious failures in water governance in major cities in the Yamuna basin including Delhi, Gurugram, Greater Noida, Noida, Vrindavan and Bhopal. The problems range from poor rainwater harvesting and inadequate sewage networks to ineffective sewage treatment capacity, unregulated groundwater extraction and neglect of water bodies.

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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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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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Himalayas · Hydro Disaster · Teesta

July 2026: 25 Workers Killed in NHPC Teesta-VI HEP Tunnel Disaster in Sikkim

July 24, 2026 SANDRPLeave a comment

(Feature Image: Joint rescue and recovery operation at Teesta VI HEP tunnel site in Samardung, Sikkim: Image credit: PTI/Source: ETV Bharat)

The methane leak and explosion disaster on 20 July 2026 inside the under-construction ADIT-III tunnel of NHPC’s 500 MW Teesta Stage-VI Hydroelectric Project (HEP) at Samardung in South Sikkim claimed the lives of all 25 trapped workers, making it one of the worst tunnel accidents in India’s hydropower sector.

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Yamuna River

Yamuna Manthan July 2026: River without Flows Even During Monsoon

July 15, 2026July 15, 2026 SANDRPLeave a comment

(Feature Image: HKB July 06, 2026 hydrograph showing only 9.97 cusecs flow being released in Yamuna despite substantial rise in inflows. Source: CWC)

It is well known that excessive diversion of Yamuna waters at the Hathnikund Barrage (HKB) in Yamuna Nagar, Haryana over the past two-and-a-half decades has turned the perennial river into a seasonal stream in its upper reaches during the lean season. However, an analysis of the Central Water Commission’s (CWC) hourly discharge figures and hydrographs since July 1, 2026 reveals that the river is now being deprived of its essential flows even during the monsoon.

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Sand Mining

Impact of Sand Mining, Transportation on River Infrastructures across India

July 4, 2026 SANDRPLeave a comment

(Feature Image: Sand boats stuck in Prakasam barrage during Sept. 2024 floods. Source: Hans India)

This overview tracks the incidents of damage and threats to bridges and other river infrastructure across India between March 2023 and June 2026. The compilation shows that at least six bridge collapse incidents were reported where riverbed sand mining, sand transportation or excessive riverbed disturbance either directly contributed to the collapse or emerged as a significant risk factor alongside floods, poor construction and overloading.

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CWC - Central Water Commission · Floods · Himalayas · Hydro Disaster · Monsoon

June 2026: Flash Flood Disaster at NEEPCO’s HEP Site in Arunachal Pradesh

June 25, 2026August 14, 2026 SANDRPLeave a comment

(Feature Image: Scren grab of flash flood passing through NEEPCO 43 Colony at PLHEP site in mornng hour of June 24, 2026. Source: Pratidin Time news)

A severe flash flood spell in the Poosa–Yazali area of Keyi Panyor district, Arunachal Pradesh on June 24, 2026, has significantly affected NEEPCO’s 43 colony located near the Panyor Lower Hydroelectric Project (PLHEP) site, close to the reservoir of the HEP. The disaster occurred around 6 in the morning, heavy spell creating a cloud burst like situation.

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Sand Mining

June 2026: Impact of Mining on River Infrastructures in Punjab, Haryana

June 19, 2026June 19, 2026 SANDRPLeave a comment

(Feature Image: The flood protection work around the pillars of already mining threatened Agampur bridge over the Sutlej river in Ropar district was damaged following discharges from Bhakra dam on June 15, 2026 night. Source: The Tribune)

This report attempts to document the impact of excessive mining activities on river infrastructure in Punjab and Haryana between 2023 and 2026. Our previous nationwide analysis on the subject can be seen here for 2023 and 2022.

Based on the available reports, at least three bridges have been impacted by riverbed mining operations in Punjab during past three years. This includes the Algran bridge on Swan river, which suffered severe damage during the 2023 floods. The bridge has remained shut since Dec. 2023 affecting connectivity for scores of villages.

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Yamuna River

Yamuna Manthan June 2026: Any Hope from Apex Court’s 3rd River Cleanup Attempt?

June 13, 2026 SANDRPLeave a comment

(Feature Image: Confluence of Yamuna (left) and Aglar river (left) in Dehradun in April 2025. BS Rawat/SANDRP)

In a significant development, the ongoing proceedings before the Hon’ble Supreme Court on May 27, 2026, in the Kondli drain pollution matter appear to have expanded into a broader Yamuna rejuvenation case. Notably, this marks the third such intervention by the apex court, with the previous two not resulting in any substantial change in river governance or pollution control or state of the river.

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