DRP News Bulletin

DRP NB 260824: Urban flooding plan welcome, Urban Water Sector needs attention

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Sand Mining

Uttar Pradesh Yamuna Aug 2024: NGT Com Finds Sand Mining Rules Violated

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Floods

August 2024 Tripura Floods: Questions over Disaster Management

Tripura is facing one of its worst floods, possibly worst since 1983, affecting all districts, at least since 19th August. South Tripura, Gomati and Unakoti are worst affected districts. According to latest estimates, at least 24 people have lost life with two more missing, 65400 people are in 450 relief camps, landslips at 2032 locations, 1.25 lakh ha crops submerged among other extensive damage. Total of around 1.7 million people or about 40% of state pulation are affected. 3 columns of army, 11 NDRF & 26 SDRF teams, 4 MI 17 helicopters and other emergency service teams are involved in rescue and relief works. The actual rainfall that started on Aug 19 gave enough warning for the state to prepare for the approaching disaster, but once again disaster management has failed to respond using this warning.  

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Hydro Disaster · Landslide · Sikkim · Teesta

Aug 2024: Massive Landslide damages NHPC’s Teesta V Hydropower station

A massive landslide (location: [27.2515, 88.4594]) at Dipu Data near Singtam in Gangtok district that brought down a huge part of a hill above the power house of the NHPC’s 510 MW Teesta V hydropower project on Teesta river in Sikkim at 7.30 in the morning of Aug 20 2024 has damaged the power house. The GIS building above the underground power house located at Balutar can be seen getting destroyed in the massive landslide and getting buried under the debris. The project has been out of operation since the Oct 4 2023 GLOF disaster in Teesta river[i] had over topped the dam and seriously damaged the project.

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DRP News Bulletin

DRP NB 190824: Goa River group win important battle against illegal sand mining

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Hydro Disaster

Himachal Pradesh: 12 More HEPs Impacted by Cloudburst Disaster in July 2024

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DRP News Bulletin

DRP NB 120824: Chalakudy community demand Prudent Dam Management Plan

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Rainfall

High Rainfall days in India’s districts in July 2024

An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for July 2024 shows that there were 914 (up from 855 in July 2023, 809 in July 2022 and 717 in July 2021) instances when district rainfall of a day was above 50 mm. Such high rainfall instances included 730 (up from 660 in July 2023, 663 in July 2022, 595 in July 2021) instances when rainfall was 50-100 mm, 143 (149 in July 2023, 107 in July 2022, 98 in July 2021) instances when it was 100-150 mm, 27 (34 in July 2023, 28 in July 2022, 17 in July 2021) times it was 150-200 mm and 14 (12 in July 2023, 16 in July 2022 and 7 in July 2021) times above when rainfall in July 2024 when rainfall was above 200 mm. As noted in earlier article[i], the July 2024 rainfall all over India was 9.3% above normal.

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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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