2025: Silt accumulation in Indian Dams: Reducing entry of silt is the only viable option

December 18, 2025December 18, 2025 SANDRPLeave a comment

(Feature Image: Luhri-I HEP muck dump along Satluj river. Credit HNA, Aug 2024)

This annual overview highlights the critical issue of siltation in dams across India. Silt accumulation is defeating the very ‘multi-purposes’ for which they were built. While the reduced storage has been hampering dam-based water supplies, it is also leading to their fast filling up and untimely releases in monsoon season thus creating avoidable floods. It is in some case has also been resulting in plans to construct additional reservoirs and increase in dam height.

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Dam Disaster · Dam Safety · Dams, Rivers & People

Kaleshwaram Project 2025: Inquiries Done, Actions Missing

December 17, 2025 SANDRPLeave a comment

(Feature Image: Wide crack in Medigadda (Lakshmi) barrage of Kaleshwaram. Credit: Nagara Gopal)

The year 2025 has seen revealing information on three inquiry reports highlighting how the Kalewshwaram project have become a massive failure on all fronts be it designing or implementing the dam project or even acting on probe reports. While govt seems to reverify liability of officials indicted in V&E report, it ended up seeking CBI investigation after tabling Ghose panel report in state assembly in Aug 2025. Similarly, the NDSA report is being followed only for fixing the damages while action against the responsible govt officials and private players is clearly missing.

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Dam floods · Dam Safety · Dams, Rivers & People

2025: Polavaram Project Developments

December 16, 2025December 16, 2025 SANDRPLeave a comment

(Feature Image: Godavari river in flood spate at Polavaram project site in Aug 2025. Source)

Amid concerns over safety and construction quality, the Polavaram project work has moved during 2025 to achieve Dec. 2027 completion target. However, not much progress has been made regarding the backwater study and addressing the issues of affected tribals and areas in Telangana, Odisha and Chhattisgarh. Meanwhile, after failing to push PBLP (Polavaram Banakacherla Link Project), the Andhra govt has proposed another contentious PNLP to divert Godavari River waters. The Stop Work order issued by the MoEF in 2011 remains suspended for all these years, making a mockery of the MoEF regulations. Wrapping up the available information, this overview shares the year-round updates on safety, progress, backwater study and linking plans related to the controversial Polavaram dam project in 2025. Our previous overview on the project can be seen here.

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Dams, Rivers & People

DRP 151225: Hydro Projects continue to provide troubling news

December 15, 2025December 15, 2025 SANDRPLeave a comment

(Feature Image: Ongoing work at Ratle HEP in June 2025. Source)

There are troubling news reports about a number of hydropower projects, even as the hydro industry tries its best to present a positive picture. NHPC tries to say that one of its 250 MW units at the Subansiri Lower HEP is good news. However, the fact that WII’s several years old recommendation that project should not be used for peaking power generation till studies about its impact on elephant corridor are complete. But the WII recommendation presented at the National Wildlife Board over 22 months ago is yet to be implemented. The serious financial trouble that the project is in, is also apparent from its desperate attempt to use the forest land as collateral, rejected by MoEF. The closing down of the NHPC office for the Subansisi Upper HEP in Upper Subansiri district came following agitation by the students Union and others there opposing the project.

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Dam Disaster

Feb. 2025: Srisailam Dam Left Bank Tunnel Collapse Disaster

December 14, 2025December 15, 2025 SANDRPLeave a comment

(Feature Image: A rescue worker at the SLBC tunnel. Credit: Nagara Gopal)

The SLCB tunnel collapse in Feb. 2025 is among worst dam-tunnel disaster this year in India. The incident occurred just four days after resuming tunneling work after a long halt killing at least 8 workers. Despite, two-month long multi agency search operation only two bodies were retrieved while mortals of six still remain buried inside the tunnel. The TBM involved in tunnelling has also been damaged. Given risky situation the rescue work was stopped in April end and there is no update on the same so far. Nearly 10 months after the disaster, there is no official report probing the reasons and addressing the concerns over inadequate geological, geotechnical inspections.

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Ken River

Hidden Faults, Flowing Rivers: How Tectonics Shape Central India’s Upper Ken Basin

December 14, 2025December 14, 2025 SANDRP1 Comment

Guest Article by Kundan Parmar & Satheesh Chothodi

(Feature image of Raneh Falls along Ken River by SANDRP)

Central India’s Upper Ken Basin, where the ancient Bundelkhand Craton meets the younger Vindhyan sedimentary rocks, appears at first glance to be a quiet and time-worn landscape. But new research reveals that the region is still being shaped by deep, hidden tectonic forces. In a recent study, geographers Kundan Parmar and Satheesh Chothodi used high-resolution elevation data and underground gravity measurements to decode the subtle fingerprints of active deformation imprinted onto the basin’s rivers and valleys. Their findings show that ancient faults, modern uplift and slow tilting continue to steer the paths of the Ken, Sonar and Bearma Rivers (all part of Ken Basin), creating steep drops, shifting channels and asymmetric basins.

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Dam Safety

2025: Govts, Judiciary Actions on Dam Safety in India

December 13, 2025 SANDRPLeave a comment

(Feature Image: Experts visit Srisailam dam to assess its structural safety in May 2025. Source)

At national level, the NDSA has carried safety audit of 1853 large dams out of 6545 as of Nov. 25, 2025. In July 2025, the Central govt announced to reconstitute NCDS for a period of three years. Before this the NDSA in April 2025 organized a symposium on Dam Safety Act 2021. It has also released the updated version of National Register on Specified Dams 2025. At state level, the Tamil Nadu govt in July 2025 has planned to set up separate dam safety wing. The Punjab govt in May 2025 moved resolution in state assembly to annul Dam Safety Act and planned to enact its own dam safety bill.

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Dam Safety

2025: Dam Safety Issues in India

December 12, 2025December 12, 2025 SANDRPLeave a comment

(Feature Image: A worn out portion of Singur dam embankment. Source)

This annual overview presents top ten reports highlighting the dam safety issues in India. Worryingly, the central govt in Oct. 2025 itself has revealed that safety audit of about 5000 large dams is pending. Before this, the NHRC in Feb. 2025 sought a report on safety of the dams across the country. The plea rightly demanded a transparent, accountable and participatory dam safety mechanism to prevent disasters. Indeed, the aging infrastructure, inadequate maintenance, slow progress of rehabilitation and fast changing climate are among the key issues putting our dams under threats.

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Dams, Rivers & People

DRP 081225: India Needs Effective Measures to Check Sedimentation of Dams

December 8, 2025December 8, 2025 SANDRPLeave a comment

(Feature Image: Despite HC orders, NHAI, Railways continue illegal dumping of landslide debris. Source)

In a reply in Lok Sabha on Dec. 04, the Ministry of Jal Shakti has revealed that 24 reservoirs in Punjab (14), Himachal Pradesh (9) and Haryana (1) have collectively lost about one fifth of their storage capacity due to sedimentation. Indeed, for years the sedimentation has become a major problem reducing the storage capacity of dams across the country. As a solution the respective governments have mainly relied on desilting which has largely remained limited to plans and in some cases have not achieved the intended purpose. In case of Bhakra the central govt has again mainly focused on desilting as solution.

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Climate Change · Dam floods · Dams · Floods · Hydro Disaster · Hydropeaking · Hydropower · Indus

The Day Salun Village Fell: Impacts of Cascading Hydropower Projects in the Ravi Basin

December 8, 2025December 8, 2025 SANDRPLeave a comment

Salun village, perched roughly 50 feet above the Ravi River, had its moment of fame on the 26th August 2025 — a moment that also became its last. On the dark, rainy afternoon, the small village with homes, rajma fields, apple orchards and cattle sheds collapsed into the flooded River Ravi like a house of cards. In a matter of 30 minutes, ancestral homes with warm hearths, blankets for the coming winter, old report cards and wedding albums, adhar cards and bankbooks-entire archives of living-were erased. Villagers, who managed to escape in time stood in awe and saw their village going extinct before their eyes.

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