Dams · DRP News Bulletin

DRP: 8 Oct 2018: “WELCOME CHANGE! Kerala Depletes Reservoir in Anticipation of Deluge from Cyclone”

In spite of all the protests against criticism of Floods worsened by Dams in Kerala in Aug, its refreshing that Kerala now accepts needs for better operation of dams with IMD red alert in three districts:

– Senior officers expressed confidence that the dams can contain the flood waters even if it rains continuously for four days. Better late than never, commented experts on the Kerala State Electricity Board’s (KSEB) decision to keep the water level low. “We’re prepared to face any eventuality. There won’t be any need to open the dam shutters even if it rains continuously for four days. We’re maintaining the water level low in major dams. The water level in Mattupatty dam is close to the full reservoir level and we’ve decided to release water from Thursday. The situation is under control and there’s no need to panic,” said KSEB chairman N S Pillai.

Continue reading “DRP: 8 Oct 2018: “WELCOME CHANGE! Kerala Depletes Reservoir in Anticipation of Deluge from Cyclone””
Dams · DRP News Bulletin

DRP: 1 Oct 2018: Hungry Water Effect due to Dams & Unsustainable Sand Mining Worsened Kerala 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: 1 Oct 2018: Hungry Water Effect due to Dams & Unsustainable Sand Mining Worsened Kerala Floods”
Dams · DRP News Bulletin

DRP: 17 September 2018: How Much of This Drought Is Man Made?

  1. Gujarat suffering due to political use of water for elections in 2017.
  2. Rajasthan given more water for elections there in 2018. Will Punjab, Haryana suffer now?
  3. Kerala drought: how much could have been reduced if dams were operated more prudently?
  4. North Interior Karnataka is suffering, but Krishna basin dams are almost full? Issue of unsustainable cropping patterns, groundwater overuse, and neglect of recharge & regulation?

Gujarat Water scarcity looms large with state receiving only 74% rainfall so far

  • Kutch and North Gujarat are likely to face severe water scarcity this year, officials said. The Kutch region has received a mere 26.51 percent of average rainfall so far, while North Gujarat has received 42.93 percent, central Gujarat 66.83 percent, Saurashtra 72.20 percent and South Gujarat the highest 94.79 percent.
  • However, the Sardar Sarovar Dam is filled up to 125.82 meters, and it can provide drinking water for the entire state till the next summer, the govt said. As per Govt. storage in Sardar Sarovar Dam on the Narmada, which will be enough to meet the state’s need for drinking water through the next summer.
  • The Narmada water will also be used to fill up empty dams in Saurashtra including Aji 1, Macchu 2, Vadod and Ankadia through the Sauni scheme, officials said.
  • “The state govt will provide 20,000 cusecs water for the next 20 days to save the crops in water-starved areas,” Deputy CM Nitin Patel told reporters in Gandhinagar said.
  • “We plan to fill up 400 big and small ponds in North Gujarat by Narmada water through canals and pipeline network of the Sujlam Suflam scheme,” he said.
  • “We also plan to fill the dams in Saurashtra region and provide water for irrigation from Narmada Dam under the SAUNI scheme,” he said. https://www.firstpost.com/india/water-scarcity-looms-large-in-gujarat-with-state-receiving-only-74-rainfall-so-far-this-monsoon-says-government-5188271.html (15 Sept. 2018)

Himachal Pradesh Rajasthan quietly given extra water by BBMB to improve BJPs Poll prospects A detailed story about how BBMB, controlled by Central Power Ministry, released excess water to BJP ruled Rajasthan this poll year, which has deepened the water availability at BBMB dams this year. This is not that the first time that the water releases have happened to achieve poll objectives. https://www.huffingtonpost.in/2018/09/16/rajasthan-quietly-given-extra-water-by-bhakra-dam-board-to-improve-bjps-poll-prospects_a_23528788/  (14 Sept. 2018)

Rajasthan Rainfall deficit in many districts As per IMD, Badmer district of Rajasthan has received rainfall 48 percent below normal till Sept. 16. Similarly rainfall deficit in Hanumangarh 58 percent so far. Jallor district is facing maximum rainfall deficit of 60 per cent less than normal. Likewise the rainfall in Pali district is 35 per cent below the normal and in Jaislmer is facing a rainfall deficit of 38 per cent. In Western Rajasthan it rained only 193 mm during entire monsoon season causing a  deficit of 24 per cent below the normal.

Continue reading “DRP: 17 September 2018: How Much of This Drought Is Man Made?”
Dams · Rivers

The River, Her Bounty and Fury: The Sakura and Tokyo

GUEST BLOG BY: Aparna Datar

The cherry blossoms of Japan are a glorious seasonal spectacle, swathing the entire country into a gentle blanket of soft pink Sakura flowers. Tokyo’s rivers turn pink as the Sakura petals, float upon their surfaces.

Sakura is a genus of the Prunus, with a genetic name Prunus serrulata, or the Japanese Cherry.

Continue reading “The River, Her Bounty and Fury: The Sakura and Tokyo”

Dams · DRP News Bulletin

DRP: 3 Sept 2018: CHINA HAS STARTED DECOMMISSIONING DAMS

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: 3 Sept 2018: CHINA HAS STARTED DECOMMISSIONING DAMS”
Dams · DRP News Bulletin

DRP: 27 Aug 2018: WRONG Management of DAMS Create FLOODS, Accept Officials and Experts

Accepting that reservoirs operation and flood management in India lack scientific supports, Madhavan Nair Rajeevan, Secretary, Ministry of Earth Sciences, in an interview has revealed that dams and water reservoirs need flood management systems that use scientific methods to understand when the time is right to open the gates.

“As per my understanding, no big reservoir has a decision support system. So we don’t know when to open them, how to open them… I am not attributing the Kerala floods to an individual. There is a common perception that in India most of the flood management systems are not supported by science… I am very sure we don’t have the decision support system and we need it.” https://indianexpress.com/article/india/not-just-kerala-no-scientific-dam-water-management-across-india-madhavan-nair-rajeevan-secy-earth-sciences-5322003/  (24 Aug. 2018)

In another interview he says that while Kerala records among the highest amounts of rainfall in the country, the State did not have a flood warning system in place. He added that while there were several sophisticated tools to anticipate extreme weather events, India still lacked a mechanism to effectively deploy them. https://www.thehindu.com/sci-tech/energy-and-environment/reservoirs-not-managed-using-a-scientific-decision-support-system-m-rajeevan/article24785253.ece  (26 Aug. 2018)

Further in a detailed interview, he pitches for ‘decision support systems’ at dams, acknowledges the challenge of climate change, warn against repercussions of ‘fast-warming’ Indian Ocean. https://indianexpress.com/article/india/kerala-floods-m-rajeevan-ministry-of-earth-sciences-met-department-5324840/  (26 Aug. 2018)

Continue reading “DRP: 27 Aug 2018: WRONG Management of DAMS Create FLOODS, Accept Officials and Experts”
Dams, Rivers & People

DRP: 20 Aug 2018: Kerala Is Recovering From Unprecedented Flood Disaster, Will It Be Cauvery Or Krishna Basin Next?

Well-known ecologist Madhav Gadgil, founder of the Centre for Ecological Sciences at the Indian Institute of Science, Bengaluru, has described the devastating floods in Kerala as a man-made disaster and a reaction to the illegal excavations and stone quarrying done over a decade. https://www.hindustantimes.com/pune-news/illegal-forest-land-acquisition-major-reason-for-floods-in-kerala-says-ecologist-madhav-gadgil-calls-it-man-made-disaster/story-vMHPKUH623GEnjyQHI09NP.html  (19 Aug. 2018)

Further speaking to various regional media, Madhav Gadgil has said that irresponsible environmental policy is to blame for the recent floods and landslides in Kerala. He also called it a “manmade calamity”. He said that the committee report had recommended to protect the resources with the cooperation of local self-govt and people, but those recommendations were rejected.

He also pointed out that quarrying is a major reason for the mudslides and landslides. Other environmentalists also point fingers at the extensive quarrying, mushrooming of high rises as part of tourism and illegal forest land acquisition by private parties as major reasons for the recent calamity. https://energy.economictimes.indiatimes.com/news/power/kerala-floods-the-ghost-of-past-environment-policy-returns/65436707  (17 Aug. 2018)

Dams should never be filled before the end of the monsoons. Because then one doesn’t have any solution but to release the water in the surrounding areas: Himanshu Thakkar, SANDRP says as one of panellist discussing role of dams in aggravating Kerala floods.

Also see, NDTV discussion on Kerala flood crisis, it included SANDRP coordinator. https://special.ndtv.com/kerala-floods-42/video-detail/kerala-floods-non-stop-special-coverage-of-the-unfolding-crisis-491815  (19 Aug. 2018)

Here is NDTV Hindi discussion on Kerala flood crisis, included SANDRP coordinator. https://khabar.ndtv.com/video/show/ndtv-special-ndtv-india/ndtv-special-coverage-on-kerala-rain-crisis-491820  (19 Aug. 2018)

Here is admission about sudden, excessive releases and not foreseeing the coming disaster. The Kerala crisis could have been contained had the state “gradually released” waters from at least 30 dams, officials said, adding that the local authorities failed to foresee the imminent danger with high rain prediction. “Such floods have probably recurred after 100 years, exposing the state’s unprofessionally run reservoir management system and unpreparedness on disaster mitigation and disaster resilience, an official pointed out. https://timesofindia.indiatimes.com/city/kochi/gradual-dam-water-release-could-have-contained-crisis/articleshow/65436339.cms  (17 Aug. 2018)

Continue reading “DRP: 20 Aug 2018: Kerala Is Recovering From Unprecedented Flood Disaster, Will It Be Cauvery Or Krishna Basin Next?”
Dams, Rivers & People

DRP: 30 July 2018: Laos Dam DISASTER: Yet Another Wake Up Call?

The various aspects of tragic Dam Disaster in Mekong Basin in Laos are still unfolding. But it is clear from many accounts that it was an avoidable, man-made disaster due to neglect of contractors, decision makers, consultants and supervising agencies. There is a lot we can learn from this if we want to avoid such disasters in India. We still do not have credible Dam Safety Law or institution, CWC is clearly not the right agency considering the conflict of interest with the various other roles of CWC. But for now let us look at the reports of Laos Dam Disaster.

Reminding the world of one of the worst dam disasters, the under construction dam Xepian Xe Nam Noy Hydro power project breached releasing 5 billion cubic metres of water in Southern Laos on July 23.

The gushing water current swept the surrounding leading to death of about 26 people and displacing about 6600 residents. As per report hundreds of people are still missing from neighbouring villages of Yai Thae, Hinlad, Mai, Thasengchan, Tha Hin, and Samong, which bore the brunt of flooding. The deluge has reportedly destroyed thousands of homes.

Continue reading “DRP: 30 July 2018: Laos Dam DISASTER: Yet Another Wake Up Call?”
Dams · DRP News Bulletin

DRP: 23 July 2018: Landmark CAG Reports on DAM FLOODS & Ineffective; Costly Mega Irrigation Projects

In its latest report, the Comptroller and Auditor General (CAG) has questioned implementation of sixteen National Irrigation Projects. Before this, the CAG has held mismanagement in dams’ operation responsible for Chennai floods in 2015. Both these reports are available on its website now.

The CAG report on National Irrigation Projects, tabled in Parliament on July 20, has revealed that sixteen major multi-purpose water projects, taken up on an expeditious basis about a decade ago, are nowhere near completion, with no work being undertaken in as many as 11 projects despite the incumbent govt’s much-wanted focus on improving irrigation facilities in the country.

The report also mentioned that out of the 16 projects, undertaken under the Accelerated Irrigation Benefits Programme (AIBP) in Feb 2008, only five projects with estimated irrigation potential of 25.10 lakh hectares were under implementation and even these projects suffer from 8 to 99 per cent shortfall in physical progress, the CAG said. The remaining 11 projects with estimated irrigation potential of 10.48 lakh hectares are yet to commence and are at different stages of approval.

Continue reading “DRP: 23 July 2018: Landmark CAG Reports on DAM FLOODS & Ineffective; Costly Mega Irrigation Projects”
Dams · DRP News Bulletin

DRP: 16 July 2018: For Dam Safety, Can We Depend On CWC Engineers Alone?

India certainly urgently needs credible measures to achieve both structural and operational safety of dams. As the HINDUSTAN TIMES editorial emphasizes, we need much greater transparency, accountability and participation of independent, non government experts at every level of functioning of Dam Safety mechanism. Current Dam Safety Bill draft falls far short of that. This is also underscored by many of the news we bring in this July 16, 208 issue of DRP News Bulletin.

The Tamil  Nadu CAG report, as Indian Express reports, has clearly said that the Chennai floods  of Dec 2015 were majorly due to the wrong decision of dam operators to release 29000 cusecs of water for 21 hours, in violation of all safety norms, but no was punished for this wrong decision. The same has always been the case.

The Bulletin also brings the warning from, no less than Chief Minister of Assam to NEEPCO that if NEEPCO, the operator of the 405 MW Ranganadi Dam releases water from the dam without warning and when downstream areas are facing  floods, they will have to bear the losses people suffer.

Continue reading “DRP: 16 July 2018: For Dam Safety, Can We Depend On CWC Engineers Alone?”