An analysis of the daily district wise rainfall data from India Meteorological Department (IMD) for the month of September 2023, the last month of India’s South West Monsoon 2023 shows that there were 406 (417 in Sept 2022[i] and 489 in Sept 2021[ii]) instances when district rainfall of a day was above 50 mm. Such high rainfall instances included 330 (365 and 374 in Sept 2022 and 2021 respectively) instances when rainfall was 50-100 mm, 64 (47 and 84 in Sept 2022 and 2021) instances when it was 100-150 mm, 10 (3 and 20 in Sept 2022 and 2021) times when it was 150-200 mm and twice (two and eleven in Sept 2022 and 2021 respectively) when rainfall in a day was above 200 mm.
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DRP 301023: Top scientist Rajeev Raghavan emphasizes need to conserve River Fish
(Feature Image:- Fish catch from a Ramganga stream in Pauri in June 2022. Bhim Singh Rawat/SANDRP)
It is rather rare when we hear the sane voice of a scientist like Rajeev Raghavan neglect of riverine fish conservation in India, from government, research bodies to down to grassroots level. Rajeev Raghavan, incidentally is among the 2% top scientists of the world by the Stanford University, USA. The over emphasis on fish in food, on marine fish, on exotic fish that has such a huge adverse impact on our biodiversity and lack of effort towards conservation of riverine fish are some of the key issues Raghavan emphasizes in this interview. He says most of the fish in the IUCN red list are riverine fish and yet there is so little understanding or effort to conserve such fish or their habitat.
If we see the discussions in the minutes of the meetings of the MoEF’s Expert Appraisal Committee on River Valley Projects in spite of there being permanent presence of a representative of Central Inland Fisheries Research Institute, we see non-existence of any concerns about the impact of the project in riverine fisheries or those who are dependent on them for livelihoods. In fact, we see the shocking spectacle of CIFRI scientists working as consultants to the hydropower companies, working to justify such projects on the highly biodiverse rivers including those of North East India.
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Massive Landslide AGAIN damages Lower Subansiri Hydro Project in Oct 2023
Once again, after several such incidents in the past, the controversial 2000 MW Lower Subansiri Hydropower project on Assam Arunachal Border was hit by a massive landslide at around 11.30 am on Oct 27 2023. The landslide damaged the project, further delaying the commissioning of the first unit, increasing the cost and time over runs of the expensive, much delayed project. Following the landslide, the only functioning diversion tunnel no 1 of the project, about 200 m upstream from the dam was blocked. The river water, about 997 cumecs (cubic meters per second) suddenly started flowing towards the dam, where the spillway gates were still under installation, yet to be tested. The water could overflow from the under construction spillway gates once the reservoir reached 145 meters level (above Mean Sea Level). The massive, majestic Subansiri river was completely without any flow till the river water started flowing through the spillway gates about twelve hours later. (Feature photo above shows the snapshot when landslide started and in the foreground, water is seen rushing towards the dam)
Assam Rajya Sabha MP Ajeet Bhuyan, referring to the October 27 landslide said in his letter to Prime Minister that the incident is only a warning, which can’t be ignored: “The hilly soil of Arunachal is fragile. Secondly, the dam site is earthquake-prone. Thirdly, the base of the dam was reduced by 09 metres without any public explanation. These are enough indications for a major disaster in the coming days”. On Oct 31 2023, he appealed to PM to take swift measures and fix accountability. He reminded PM that Mr Modi himself had said in 2014 no big dams in North East if people do not want. He also reminded that current Defense Minister Rajnath Singh had also said they will scrap the project. Mr Bhuyan said that he apprehended much bigger disaster than recent Sikkim Disaster if this projects goes ahead.
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Rivers Crossing High Flood Levels In SW Monsoon 2023 in India
(Feature Image: Yamuna river near CWC flood monitoring site at Mawi in Kairana. SANDRP/June 2023)
SANDRP has compiled Highest Flood Level (HFL) breach incidents, which includes 2 incidents in June, 34 in July, 17 in August, 22 in September 2023. This report presents the final summary of all HFL breach incidents taking place during South West Monsoon season 2023. The PDF file has the details on all the HFL breach. Our previous reports on the subject can be seen here: HFL breach incidents in 2018, 2019, 2020, May-Sept 2021, Oct.-Nov 2021, May-June 2022 and July-October 2022. .
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Medigadda dam of Kaleshwaram project in Telangana damaged in Oct 2023
A portion of the Lakshmi (Medigadda) barrage on Godavari river on Telangana-Maharashtra border, part of the Kaleshwaram Lift Irrigation Project (KLIP) in Telangana’s Jayashankar Bhupalpally district[i] caved in on Oct 21 2023, Saturday night with a loud sound. The incident led to the temporary closure of the bridge of the barrage across the Godavari River that links Telangana’s Mahadevpur mandal with Maharashtra’s Gadchiroli district. The KLIP is the world’s largest Lift Irrigation Project, possibly the costliest, with expenses already above Rs 1 lakh crore. The Union Govt, recognising this as a major dam failure under para 8 of Schedule II of Dam Safety Act 2021, has promptly sent a team of six experts to assess the damage.
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DRP 231023: Need to be a little serious about Dam Safety, Flood Forecasting, Use of Early Warnings
(Feature Image: Landslide warning board at Lakhwar dam site on Yamuna river. SANDRP, June 2015)
India need to relook the Dam Safety Act Experts say the Sikkim incident exemplifies blind spots in both legislation and implementation. The DSA does not promote risk-based decision-making and fails to incentivise transparency. Himanshu Thakkar, an environmental activist and coordinator of South Asia Network on Dams, Rivers and People, says that the frequency and scale of such disasters reveal a pattern of neglect: “It keeps happening regularly, people face disastrous consequences and we call these ‘natural disasters’. But there’s nothing natural about them.”
A robust DSA should allow different stakeholders to access information easily, but India’s framework falls short. “Dam safety is a public purpose function. Everything about dam safety, functions of all the institutions and committees and authorities, their reports, decisions minutes and agendas, everything should be promptly available to the public,” says Mr. Thakkar. “But nothing is in the public domain.” He adds that transparency is further obstructed when national and State bodies comprise government employees and engineers who worked on these projects, compromising objective decision making and lacking “people with a proven track record of taking independent decisions.”
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Uttarakhand: Cloudbursts in SW Monsoon 2023
(Feature Image: A ‘cloudburst’ incident damaging crops, farmlands & threatening Majju Gawad tok of Syun village in Dasholi block, Chamoli on August 06, 2023. Source: Raftaar news)
Since 2018, SANDRP has been documenting the increasing ‘cloudburst’ related disasters taking place in the Himalayan states. This report details the occurrence of such incidents in Uttarakhand during South West monsoon 2023. Our previous report on the subject for Uttarakhand can be seen here: 2022; 2021; May 2021; 2020; 2019 & 2018.
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DRP 161023: Kaddam Dam Rehabilitation in Telangana: Many more will need this
(Kaddam dam spilling over with flood waters in July 2023. Image Source: SM)
Telangana’s Kaddam Dam, built with inadequate spillway capacity, has seen multiple threats and disasters over the years, starting from the very first year after its commissioning in 1958. The dam again saw threat of being washed away during monsoon this year. The Telangana government has decided to rehabilitate the dam at a cost of Rs 640-700 Cr, by reconstruction of spillway and installation of new gates. We hope the new spillway capacity will be in line with the changed monsoon rainfall pattern and will be able to take care of the higher probable maximum precipitation and higher probable maximum flood. Though we are unlikely to get to know how this is going to happen, as the standard operating procedure of all dam owners in India is secrecy rather than transparency even in dam safety aspects. One also hopes this is done at the earliest, and till that is achieved, the dam rule curve will be changed to ensure the dam does not face disastrous situations during monsoon.
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Dam Safety Act & the role of Dams in the 2023 HP Floods
In order to have high standards of dam safety the prerequisites are designing and constructing dams with reasonable safety margins; operating and maintaining them safely; and having emergency arrangements to address situations that might arise. Operation of dam within its ambit also includes thorough understanding of likely impacts and its management in case of flooding, in any emergency situation or in the event of dam failure, both upstream and downstream on communities living there, their livelihoods and also on infrastructure and property which can get affected. In fact in many countries like Sweden and in many states of the USA, a dam is assigned a dam safety class i.e. A, B or C depending upon the significance of the damage that might occur in case of dam failure, class A being assigned to dams whose failure might cause significance loss of public life and property. Dam safety requirements are calibrated accordingly and a higher burden is put on dam owners of higher class, concerning safety management system, emergency plans, overall assessments, and annual dam safety reporting.
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DRP 091023: MoEF Panel concerned about impacts of Small Hydro
(Gangani SHP on Yamuna river in Uttarkashi affected by June 2013 flash flood. Image: Yamuna Jiye Abhiyan/July 2013)
The Forest Advisory Committee of Union Ministry of Environment and Forests (MoEF) have rightly raised concerns about the impacts of so called small hydropower projects, that is hydropower projects with capacity below 25 MW. The MoEF assumes, following such unknown science or logic, that such projects have no environment and social impacts, they do not need environment and social impact assessments or management plan, they do not need any public consultation process, they do not need any monitoring or compliance and most significantly, they do not even need any clearances! A more unscientific thinking of the govt of India’s top environmental body would be difficult to find.
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SANDRP 