Dam Decommissioning

Dam Removal as a River Restoration Tool: World Fisheries Congress 2024

The recently concluded World Fisheries Congress in Seattle in March 2024[i] discussed several themes relating to the health of our rivers, dependent communities and fish. Of the several interesting sessions, Symposium on ‘Dam Removal as a River Restoration Tool at the Water-Energy-Food Nexus’[ii] was of particular interest.  I was simultaneously at two parallel sessions and was unable to attend some of the presentations but have tried to provide an overview of the Symposium, including a talk by SANDRP.

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Dam Safety

2023: Safety & Sustainability Concerns On Dams & Hydro Power Projects in India

Continue reading “2023: Safety & Sustainability Concerns On Dams & Hydro Power Projects in India”
Dam Decommissioning · Dam Safety

भारत में बांध हटाने की नीति व कार्यक्रम की आवश्यकता

(Feature Image: NDRF rescue work at damaged Tapovan Vishnugad HEP Dam in Chamoli, Uttarakhand in Feb. 2021. Image PTI/ Source: The Tribune)

Continue reading “भारत में बांध हटाने की नीति व कार्यक्रम की आवश्यकता”
decommissioning

Dams Decommissioning going up globally

All large dams have finite life. What happens to the dams once the useful life of a dam is over? It would need to be decommissioned. Decommissioning of a dam generally refers to[i] complete removal of the dam and its associated structures. This is a very relevant question for India as the third largest dam builder of the world. It becomes even more important as large dams are no longer required or are no longer viable and importance of a flowing river is increasingly appreciated. It needs to be kept in mind that a dam cannot be allowed to remain on the river, without proper maintenance, as such a dam would remain a huge safety hazard for society and economy downstream from the dam.

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DRP News Bulletin

DRP NB 25 Jan. 2021: UN warns about aging Dams & Floods in changing climate

A new UN report released on January 21, 2021 UN has warned the major big dam owning counties about the aging population of fast silting up dams in changing climate and urgent need to start working on decommissioning of uneconomical large dams. Among the few countries that UN has warned includes India with its third largest number of big dams. The added problem in India is the ill maintained and ill operated large dams that UN report did not look into. Indian dams are sanctioned based on highly under estimated siltation rates, there is practically no transparency and accountability in operation of Indian dams and dam almost every year get away with creating avoidable flood disasters. This latest problem is not just related to old dams, but even the newest celebrated ones like the Sardar Sarovar Dam as happened in Gujarat in late August-early Sept 2020. No legal regime exists in India for dam safety, either structural safety or operational safety. And in changing climate, with increasing frequency of higher intensity rainfall events, such risks are already increasing multi-fold.

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Dams

Why are we still building Large Dams?

Analysis of official information shows that Big dams are not longer necessary or viable or optimal in India. Most (over 95% of India’s 5701 large dams (5264 completed and 437 under construction as per CWC’s National Register of Large Dams[i]) are built for irrigation, but most of our irrigation now comes from groundwater. In fact, about 90% of additional irrigation in last four decades has come from groundwater.

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Dams · DRP News Bulletin

DRP News Bulletin 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.

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Dams · DRP News Bulletin

DRP News Bulletin 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.

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Floods · Rivers · USA

US Dams, Rivers and People in 2017: There is so much to learn!

DECOMMISSIONING OF DAMS

Map of dams removed since 1916 Dams cause considerable harm to rivers. Dams have depleted fisheries, degraded river ecosystems, and altered recreational opportunities on nearly all of our rivers. Today, many dams that were once at the epicenter of a community’s livelihood are now old, unsafe or no longer serving their intended purposes. Learn how USA is working to remove dams and restore the rivers.  (Map above is from Ameerican Rivers website, depicting the location of decommissioned dams in USA.) https://www.americanrivers.org/threats-solutions/restoring-damaged-rivers/dam-removal-map/ Continue reading “US Dams, Rivers and People in 2017: There is so much to learn!”

DRP News Bulletin

DRP News Bulletin 26 March 2018: Massive Farmer protest in Palghar against water diversion

MASSIVE Farmer protest in PALGHAR (Maharashtra) The protest for the third day on World Water Day, was against diversion of water from Survya Dam for Vasai-Virar and Mira-Bhayander. under the aegis of the Surya Pani Bachav Samiti.

– The contract to construct the 88-km long pipeline has already been awarded to the L&T Group by the Mumbai Metropolitan Region Development Authority (MMRDA) under the Surya Regional Bulk Water Supply Scheme.

– Ramakant Patil, chief convenor of the SPBS who is also undertaking the fast, said the Surya dam, which was built in 1990 over the Kawdas and Dhamni rivers in Kasa taluka,Dahanu, was specifically for irrigational purpose for 19,000 odd acres of farmland in Palghar district. “Now the MMRDA is planning to divert around 89% of the dam water to the above cities so as to solve the cities’ drinking water issues, but we the farmers would be denied water for our land,”said Patil.

– They withdrew it after an assurance of a meeting with chief minister Devendra Fadnavis. “We have raised this issue for many times in the past. But it is for the first time that a CM has agreed to sit with us and discuss. Now we are just waiting to hear from the CM’s office to know the date of meeting,” Brian Lobo of Kashtakari Sangathan adds. https://www.hindustantimes.com/mumbai-news/palghar-farmers-fast-over-diverting-surya-dam-water-enters-third-day/story-LsTeF2vf6xuVroPRO2GSYJ.html, http://www.dnaindia.com/mumbai/report-urban-areas-rob-tribals-of-water-supply-2597713   Continue reading “DRP News Bulletin 26 March 2018: Massive Farmer protest in Palghar against water diversion”