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

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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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 floods · Urban Flood · Urban Rivers

2025: Dam Induced Urban Floods in India

December 7, 2025 SANDRPLeave a comment

(Feature Image: The Musi river in flood spate in Hyderabad on Sept 27, 2025 following incessant rains and the lifting of gates at the overflowing Osman Sagar and Himayatsagar reservoirs. Credit: Nagara Gopal )

In 2025, we could find reports on two Indian cities facing the impact of dam induced floods. While the excessive discharges by Himayat Sagar reservoir severely inundated residential areas along Musi river in Hyderabad in last week of Sept 2025, the significant releases by Ukai dam authority into Tapi river affected daily life in Surat city twice in mid Aug and first week of Sept. 2025.

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Dam floods · Fly Ash Bund Breach

2025: Fly Ash Dam Breach Flood in India

December 6, 2025December 6, 2025 SANDRPLeave a comment

(Feature Image: HTPS fly ash dam breach floods farmlands in Korba in June 2025. Source)

In 2025 we could find one incident of fly ash dam breach flood in India. The incident happened in Dindolbhantha village area near Chhirhut under Katghora tehsil of Korba district in Chhattisgarh on June 26, 2025. The fly ash dam covering around 60 ha is created by Chhattisgarh State Power Generation Company (CSPGC) formerly known as Chhattisgarh State Electricity Board (CSEB) to store fly ash slurry from 840 Mw (210X4) Hasdeo Thermal Power Station (HTPS) also known as Korba West Thermal Power Station (KWTPS).

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Dam Induced Flood Disaster

2025: Dam Induced Flood Incidents in India

December 5, 2025December 10, 2025 SANDRPLeave a comment

(Feature Image: Locals assist in moving flood affected people to a safer place as floodwater enters villages in Ajnala, near Amritsar. Source)

India has witnessed several incidents of dam induced floods during south west monsoon 2025. The most remarkable and devastating episode unfolded in Punjab and Himachal Pradesh states in August 2025 largely due to mismanagement of Bhakra, Pong and Ranjit Sagar dams by BBMB. While negligence of BBMB has invited FIRs in Himachal Pradesh, warnings by Punjab govt and petition in NGT, there is no report in public domain suggesting the authority taking any credible action to make its dam operation scientific and accountable after the disaster.

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Fish, Fisheries, Fisherfolk

WFD 2025: Struggle & Resistance of Fisherfolks in India

November 21, 2025November 22, 2025 SANDRPLeave a comment

(Feature Image: Boats of small fishers in Hooghly river in Haldia. Credit: Rahul Singh/ Mongabay India)

The theme for World Fisheries Day (WFD) 2025, “We have not caught anything, but at your word I will let down the nets” aptly resembles the plight of lakhs of fisherfolks both inland and coastal in India whose livelihoods have apparently been undermined by various development projects. However, amid growing uncertainties they keep up the resistance against the destructive projects to reclaim their rights as the top ten stories of past one year compiled here signifies. This is the fifth part of our annual overview on the subject and in first four parts we have highlighted the positive developments on fisheries, impact of dams on fish diversity and habitats, important studies and new fish species discovered in India during past one year.

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Fish, Fisheries, Fisherfolk

WFD 2025: New Freshwater Fish Discoveries from India

November 21, 2025 SANDRPLeave a comment

(Feature Image: The new species of cyprinid from the Brahmaputra River. Source)

Amid rising threats, the researchers continue to discover new freshwater fish species in India mostly from North East and Western Ghats as shows this overview, prepared on the occasion of World Fisheries Day (WFD) 2025. This is fourth overview and we have covered positive developments, impact of dams, important studies on the subject taking place during the past one year in first, second and third parts of the series.

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Dams, Rivers & People · Fish, Fisheries, Fisherfolk

WFD 2025: Impacts of Dams on Inland Fish, Fisherfolks

November 20, 2025November 20, 2025 SANDRPLeave a comment

On the Occasion of World Fisheries Day (WFD) 2025, SANDRP shares the top ten reports underlining the growing impacts of river obstruction projects on freshwater fish species and dependent fisherfolks in India. Indeed, damming free flowing rivers has become the single biggest reason behind growing extinction rate of aquatic life by severely disrupting their migration routes. The iconic hilsa and mahaseer fish in Ganga and Narmada have declined sharply due to construction of Farakka and Sardar Sarovar dams respectively, among others.

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CWC - Central Water Commission · Floods · Highest Flood Level

India’s Rivers in Extreme Floods in Oct 2025

November 1, 2025November 1, 2025 SANDRP1 Comment

In Oct. 2025, we could find at least 06 flood monitoring sites of Central Water Commission (CWC), where rivers have crossed their Highest Flood Levels (HFL) after the end of South West Monsoon season 2025 on Sept 30 2025. Of the 6 sites, 2 each are in Brahmaputra basin in W Bengal and Ganga basin in Bihar. 1 site Anantharam on Musi river in Telangana is part of Krishna basin and 1 site Marella on Gundlakamma river in Andhra Pradesh is part of East Flowing Rivers between Mahandi and Pennar basin.

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