Dam Disaster

Tungabhadra Dam: A Crest Gate washed away in August 2024

In a major dam related disaster at around 10.50 pm on Aug 10, 2024[i], one of the crest gates at the Tungabhadra dam has broken[ii] near Hospete in Vijayanagara district in Karnataka, causing the release of 70,000 to 100,000 cusecs of stored water. The chain on the 19th (of total 33 gates) gate of Tungabhadra dam on Tungabhadra river, part of Krishna River Basin, got cut, snapped and was washed away about 100 m from the dam on Saturday. The chain that was used to operate the gate snapped as the welding gave way. The Tungabhadra gates only have chain and not chain and rope as in some other dams. The force of the water in the dam swept the 60-foot-by-20-foot gate, weighing around 20 tonnes, some 500 ft away, J Purushottham, president of the Tungabhadra Farmers’Association, said. This possibly happened due to heavy flows, but also due to wear and tear of over 70 years of operation of the dam. A temporary stop log gate is now being planned, as permanent crest gate will take time.

The disaster raises a number of questions about the operation and maintenance of the dam.

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Yamuna River

Yamuna Manthan 080824: Welcome Judicial Decisions for River Floodplain

(Feature Image: Yamuna floodplain downstream old railway bridge Delhi. March 2024, SANDRP)

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Rainfall

June July 2024: District wise rainfall in India’s SW Monsoon

In the month of July 2024, the second month of India’s South West 2024 monsoon, India received 306.6 mm (318.4 in July 2023[i] and 327.7 mm in July 2022[ii]) rainfall, 9.3 % above (13.5% above normal in July 2023 and 16.8% above normal in July 2022) the normal July rainfall of 280.5 mm as per India Meteorological department. So this is the third consecutive year when rainfall in July is above normal.  In July 2021, the rainfall was 266.1 mm[iii], about 6.7% below normal and  in July 2020, the rainfall was 257.1 mm[iv], or about 9.9% below normal.

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Fish, Fisheries, Fisherfolk · Hydropower

Clueless about fish passes: CIFRI’s Review of fish pass research in India

Central Inland Fisheries Research Institute (CIFRI) is a premier institute under the Indian Council for Agricultural Research (ICAR) of the Ministry of Agriculture and Farmer’s Welfare, Government of India. It is one of the only government institutes researching the status of inland fisheries and recommending steps to improve fisheries and well-being of dependent population. Founded in 1947, an expert from CIFRI sits on the Expert Appraisal Committee, (EAC) on River Valley Projects of the Ministry of Environment, Forests and Climate Change (MoEF and CC), recommending environmental clearances to dam projects across the country. This expert is supposed to look at impacts on fish diversity, fisheries and dependent population and judge whether the project is feasible or not based on its impact and possible mitigation measures.

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DRP News Bulletin

DRP NB 050824: Cities fail monsoon test

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Hydro Disaster

July 2024: ‘Cloudburst’ in Beas Basin Damages 2 HEPs in Himachal Pradesh

Continue reading “July 2024: ‘Cloudburst’ in Beas Basin Damages 2 HEPs in Himachal Pradesh”