It’s great to see the top edit in THE TIMES OF INDIA today (Aug 12, 2019) calling for urgent review of flood management in India. Indeed the current floods can be a big wake up call.
TOI Edit rightly says: “Similarly, there’s also an urgent need to upgrade dam management in the region. Despite heavy rain warnings, why couldn’t Maharashtra and Karnataka coordinate to release dam waters downstream as a pre-emptive measure? We need much more proactive and punctilious supervision of dam waters.” Indeed there is need to fix the responsibilities of failures in Dam Management, including forecasting failures, Violations of rule curves, mismanagement of reservoirs and lack of information sharing and coordination. Continue reading “DRP News Bulletin 12 August 2019: URGENT REVIEW OF FLOOD MANAGEMENT REQUIRED”
Indian Express, one of the India’s leading and most respected National Newspapers, has an editorial on the above subject on June 17, 2019. The Edit has some rather dire warnings: “If current conditions persist — the US Climate Prediction Center has forecast an 81 per cent chance of El Nino, the abnormal warming of the equatorial eastern Pacific Ocean waters known to adversely impact rainfall in India, continuing till July and 66 per cent up to August — kharif crop production will take a hit.”
The monsoon, after its rather reluctant entry into Kerala, so far is already 43% deficit till June 17. Out of 36 meteorological divisions, 18 had large (over 60%) deficiency and 13 more had 20-60% deficiency, so 31 of 36 sub divisions already faced over 20% rainfall deficit. If the El Nino prediction of US Climate Centre comes true, we could be in for meteorological, agricultural and even hydrological drought, considering our water management situation.
Continue reading “DRP News Bulletin 17 June 2019: If the Rains Fail; Is the Nation Ready?”
The India Rivers Week 2018, in fifth year, will be held at WWF, Delhi during Nov 24-26, 2018. The focus of the IRW this time is: “Can India Rejuvenate Ganga?“. Shri Rajiv Ranjan Mishra, Director General of the National Mission for Clean Ganga will address the inaugural session with Chief Guest Shri Jairam Ramesh, former Union Minister, in Chair. The meeting will see over 150 people from all over India participate to discuss state of India’s rivers at the only meeting in India focussing exclusively on rivers.
The Annual River Lecture will be given by Prof Rajiv Sinha of Indian Institute of Technology, Kanpur. The Bhagirath Prayas Samman award for the best work on River Conservation and the Anupam Mishra Medal for exemplary media work on River conservation will be given away by famous Chipco leader Shri Chandiprasad Bhatt.
Shri U P Singh, Secretary, Union Ministry of Water Resources has agreed to the chief guest at the concluding session on Nov 26, Monday. Started in 2014, the meeting is collectively organised by Yamuna Jiye Abhiyan, WWF-India, INTACH, Toxics Link, People’s Science Institute (Dehradun), Peace Institute and SANDRP.
For more information, please see: https://indiariversforum.org/2018/11/19/india-rivers-week-2018/. Follow IRW at: https://www.facebook.com/IndiaRiversWeek/ and https://twitter.com/IndiaRiversWeek
Continue reading “DRP News Bulletin 19 November 2018: India Rivers Week to focus on Ganga Rejuvenation during Nov 24-26, 2018”
Unprecedented Kerala deluge that swept through the coastal state on the day of Independence day 2018 was most disastrous flood incident in the year. It has also been termed as one the worst flood in the state and reminded the people of July 1924 and July 1962 flood calamities. Many experts, several reports and studies have established the role of dams in worsening the deluge. According to reports, 35 out of the 46 dams within the state were opened for the first time in history. All 5 overflow gates of the Idukki Dam were opened at the same time, for the first time in 26 years.
State Government Accepts Dams Role
Kerala is usually considered a flood-proofed state with its undulating terrain. For a state that receives an annual average rainfall of nearly 3,000 mm, its natural landscape protects it from recurrent floods. Indeed, the Kerala flood has highlighted our poor dam management system.
As per officials the crisis could have been contained had the state “gradually released” water from at least 30 dams, in advance of high rainfall, adding that local authorities failed to foresee the imminent danger with high rain predictions. “Such floods have probably recurred after 100 years, exposing the State’s unprofessionally run reservoirs management system and unpreparedness on disaster mitigation and disaster resilience.
Continue reading “Kerala: Dams Floods 2018: Follow Rule Curves to Avoid Flood Disasters”
A try-out of the technique to grow paddy without puddling at village Chehlan of Ludhiana has resulted in higher yield in comparison to puddled fields, while saving water in the process. The crop was ready for harvest days before expected time, saving irrigation water otherwise to be used for another fourteen days. This trial was funded and supervised by ATMA, a central govt. scheme under the Union Ministry of Agriculture.
Puddling is a traditional method of flooding paddy fields with running water, whereas in non-puddling technique, ‘ridges and furrows’ are formed in soil to let water store in spaces and let it stay, thus reducing irrigation frequency.
“Not paddy but puddling is the enemy of waters of Punjab. It is wastage of water to puddle fields as most of it just evaporates. We have saved 45-50 per cent of water in non-puddled fields. Our yield has been almost 30 per cent more from fields where crop was not puddled. Also, non-puddled crop matured very early, saving at least ten days of irrigation water,” says Rupinder Singh Chahal (43) who along with his brothers Jasvir Singh (48) and Kulwinder Singh (52) experimented with ‘non-puddling’ technique on four acres this year.
Continue reading “DRP News Bulletin 29 October 2018: Better Paddy Options Exist For Punjab”
International news agency, after independent research, have corroborated what SANDRP has been saying: Mismanagement of dams played big role in worsening Kerala floods.
-“The release could have started earlier so that by Aug. 9 there would have been left-over capacities in the reservoirs to store the water,” said Biswajit Mukhopadhyay, director of water resources at U.S-based engineering firm IEA, who analysed some of the publicly available data at the request of Reuters.
– Still, dozens of flood victims interviewed by Reuters, who live in villages dotting the banks of Kerala’s biggest river, the 244 km Periyar, say they faced no floods despite torrential rain in late July and early August. All of them said waters only rose overnight on Aug. 15. That was when more intense rainfall forced KSEB to rapidly ramp-up releases of water from Idukki and Idamalayar reservoirs, which feed into the Periyar.
– Kerala’s revenue secretary and head of disaster management, P.H. Kurien, told Reuters he has twice written to KSEB requesting EAPs and has yet to receive them. KSEB’s Pillai said EAPs and dam operation manuals were still being prepared. CWC said it was working with Kerala’s government to speed this up. The Kerala Chief Minister’s office did not respond to requests for comment. https://widerimage.reuters.com/story/did-dams-make-indias-once-in-century-floods-worse (11 Oct. 2018)
And this fantastic infographic: https://fingfx.thomsonreuters.com/gfx/rngs/INDIA-FLOOD/010080MF18N/index.html (11 Oct. 2018)
Continue reading “DRP News Bulletin 15 October 2018: Reuters Corroborates that Dams Played Major Role in Kerala Floods”
ABSTRACT: Many independent observers have argued that dams have played a role in increasing the proportions of Kerala flood disaster during July-Aug 2018. This article shows that Kerala dams violated many basic norms and if operated prudently, could have helped. It shows how post dam floods are different than pre dam floods. It lists the steps that would help in future disasters involving dams. The lessons are useful for all large dams of India.
In theory, every dam can help moderate floods in the downstream areas, as long as and as much as the dam has space to store water. In fact, every action that helps to store, hold, recharge (to groundwater aquifer), delay flow of rainwater from the catchment to the river would help moderate flow and hence flood in the river. Our catchments are fast losing that capacity, with continued destruction of natural forests, wetlands, local water bodies and also soil’s capacity to hold water. Continue reading “Role of dams in Kerala’s 2018 floods”
Dams and reservoirs make rivers sediment-starved and menacing manifold downstream. While heavy rainfall is also a key factor behind the floods, hungry water had a more pronounced effect, says D. Padmalal, Scientist and Head, Hydrological process group, National Centre for Earth Science Studies.
– “When the sediment transport is interrupted, the potential energy of the hungry water released from dams will scour the river banks downstream, uprooting trees or riparian vegetation and damaging bridges and other engineering structures,” explains Dr. Padmalal. Overloaded with silt and clay from the eroding river banks, the highly turbid and viscous water clogs drainage channels. Subsequent discharge of water from the dam will lead to inundation and waterlogging of large areas.
– Hungry water can also develop in high gradient river channels devoid of adequate quantity of sand and gravel, especially during periods of high rainfall. “Years of uncontrolled sand mining have left most of the rivers in Kerala depleted or exhausted of sand and gravel. This creates a situation similar to the release of hungry water from dams,” notes Dr. Padmalal. When the river channel has adequate supply of sand and gravel, the potential energy of the water is used to transport the mixture. The water does not scour the banks or turn muddy.
Continue reading “DRP News Bulletin 1 October 2018: Hungry Water Effect due to Dams & Unsustainable Sand Mining Worsened Kerala Floods”
National Institute of Disaster Management, Ministry of Home Affairs, Govt of India invited Himanshu Thakkar, Coordinator of SANDRP, to speak on the topic at IHC on Saturday. At the packed hall with participants that included members from Central Water Commission, National Disaster Management Authority, Embassies, Media and Civil Society, the speaker explained how unwise and unaccountable operation of dams, violating all norms, hugely contributed to the proportions of the Kerala flood disaster. Giving the example of Idukki dam, he showed, how if the dam was operated as per rule curve, its contribution to the floods could have been reduced by over 50%. Similar is the story of other dams in Kerala.
Continue reading “DRP News Bulletin 10 September 2018: NIDM Lecture on Role of Dams in Kerala Floods”
In a mountain village in southwest China’s Sichuan province, authorities have demolished seven small dam projects this year along a river to clear illegal developments in a new nature reserve. The demolition is part of a nationwide programme to close hundreds of tiny and often ramshackle dams and turbines and bring order to China’s massive hydropower sector after years of unconstrained construction.
The dams sat on an unnamed tributary of the fierce and flood-prone Dadu river, which feeds into the Yangtze, Asia’s largest and longest river, where the government says the “irregular development” of thousands of small hydropower projects has wrecked the ecology. But green groups say the campaign will not necessarily save the environment because it will not affect big state hydropower stations, which they say have caused the most damage.
On the 48 km Zhougong, authorities have already demolished small projects built in nature reserves or encroaching upon new “ecological red lines” drawn up to shield a quarter of China’s territory from development.
The government says small dams have disrupted the habitats and breeding patterns of many rare species of fish, although green groups argue the damage wrought by bigger dams is more severe, with entire towns and ecosystems submerged in water, which they say increases the risk of earthquakes, landslides and even climate change.
Continue reading “DRP News Bulletin 3 Sept 2018: CHINA HAS STARTED DECOMMISSIONING DAMS”