DRP 070425: New Impact of Big dams: Increased oxygen intake in inland waters

April 7, 2025February 28, 2026 SANDRPLeave a comment

(Feature Image: Merging point of of Badiyar gaad (left) and Yamuna river (right) at Gangani in Badkot, Uttarakhand. BS Rawat/SANDRP)

New research published this week reveals a startling change: the oxygen levels in inland waters has been dramatically reducing since 1900, due to human activities including big dams and pollution. This condition leads to dead fish, collapsing food chains and reducing water quality, among other impacts.

There are simultaneous processes ongoing in inland waters leading to production and consumption of oxygen. The location and processes for both the production and consumption of oxygen has been changing during 1900 to 2010. The Global oxygen consumption in inland waters, net of production has gone up by over 100% from 0.26 Pg/year in 1900 to 0.53 Pg/ year in 2010. While earlier climate change was considered major contributor to this reduction, new research shows it is big dams and pollution that are much bigger contributors. Inland waters now pull nearly 1 billion tons of oxygen from the atmosphere every year — half as much as the entire ocean emits back.

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DRP News Bulletin

DRP 310325: Does Mumbai need Gargai Dam?

March 31, 2025February 28, 2026 SANDRPLeave a comment

Maharashtra Chief Minister Devendra Fadnavis, brushing aside the concerns of forest officials, opposition, environment and available options this week has asked the officials to fast track the Forest and other clearances for the controversial Gargai dam for additional supply of water to Mumbai. This is shocking on several counts.

Our study earlier showed that Mumbai does not need any additional dam including Gargai if it utilizes available local resources including rainfall, reuse of treated sewage, desalinization, demand side management, groundwater recharge, among other cost effective and less destructive options. The Chief Minister of his government has not bothered to respond to these concerns or options. In fact, when our study was published, even government officials in Mumbai had supported our conclusions.

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DRP News Bulletin

DRP 240325: Will the encroachments in Anasagar lake in Ajmer be removed?

March 24, 2025February 28, 2026 SANDRPLeave a comment

Over the last about 4 years, very interesting events are playing out in India’s judiciary regarding the encroachments in Anasagar lake in Ajmer, Rajasthan.

The first order from the National Green Tribunal came to remove the encroachments from Anasagar lake in Dec 2021, reiterated in Aug 2023 as the encroachments were in violation of the environmental regulations and Wetland Rules of 2017. Apparently, the state government with investment of Rs 12 Cr was the biggest encroacher and the investment in the encroached land continued even while NGT order was awaiting implementation.

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DRP News Bulletin

DRP 170325: Can we work for more Kham Rivers and Less Sabarmati Rivers?

March 17, 2025February 28, 2026 SANDRPLeave a comment

This week’s DRP News Bulletin brings two encouraging reports about revival of Kham River in Sambhajinagar district in Maharashtra. The Bulletin also brings report of Gujarat Human Rights Commission sending notice to the state and city government to uphold the environment rights of citizens in Vadodara. There is also here the news of signing of MOU for beginning of 4 km water taxi along Yamuna in Delhi upstream of Wazirabad barrage, of course without any environment or social impact assessment, any environmental clearance, any public consultation process, with blind faith in Sabarmati River Front Development model.

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DRP News Bulletin

DRP 100325: “Good Floods Reduce the Risk of Bad Floods”

March 10, 2025February 28, 2026 SANDRPLeave a comment

(Feature Image: An aerial view of the flooded collectorate ghat at the bank of Ganga river in Patna. PTI Photo/Source: The Asian Age)

This remarkable report this week, quoting the work of Gilbert F White, also considered “father of floodplain management” provide a number of lessons in flood management. These include: – “Floods are ‘acts of God’, flood losses are largely acts of man” (By ‘acts of God,’ he meant that floods are perfectly natural events);

– “Yes, floods will happen. Whether or not those floods are good floods or bad floods, whether or not they cause damage is largely up to us”;

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DRP News Bulletin

DRP 030325: Supreme Court asks: How a city can become smart without protecting the water bodies, wetlands

March 3, 2025February 28, 2026 SANDRPLeave a comment

In a welcome development, the Supreme Court of India has asked, in the context of Ajmer City in Rajasthan, how can a city become smart without protecting the water bodies/ wetlands? How cities will become smarter by encroachments on the water bodies and wetlands? The Supreme Court bench threatened the Rajasthan government of contempt of court for non-compliance of order dated Dec 1 2023 as also the order of National Green Tribunal on Dec 13 2021.

The Supreme Court here has hit the nail and raised a very fundamental question that is relevant to all the cities across India as they are all guilty of allowing encroachments and destruction of local water bodies in their respective areas. This is a suicidal step as it has adverse impact on the cities in multiple ways and yet, most cities consider this smart and in fact get away with it. There is also no National Urban Water Policy guiding the cities solve the puzzle of multiple issues handled by multiple departments, including some by the local, state and central governments. This self-created mess in the cities comes handy for the various vested interests in encroaching more water bodies. The judiciary, so far has also not been effective in addressing this issue with any effectiveness.

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Dams · DRP News Bulletin

DRP 240225: Unanswered questions on Ken Betwa Project

February 24, 2025February 28, 2026 SANDRPLeave a comment

At a well-attended meeting at India International Centre in Delhi on Feb 20 2025, organised by VIDHI Centre for Legal Policy, a panel of speakers including Shri Shashi Shekhar (former secretary, Union Ministry of Water Resources) and Shri Jasbir Singh Chauhan (former Principle Chief Conservator of Forests, Madhya Pradesh) and Himanshu Thakkar of SANDRP, a number of fundamental questions were raised about the controversial Ken Betwa River Link Project. Unfortunately, no clear answers are forth coming from the authorities.

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DRP News Bulletin

DRP 201123: Inland fisheries need attention: World Fisheries Day 2023

November 20, 2023February 27, 2026 SANDRPLeave a comment

(Feature Image: Recreational fishers catching fish in Yamuna river downstream Wazirabad barrage in Delhi in June 2023. Image: BS Rawat, SANDRP.)

On the World Fisheries Day, celebrated on Nov 21 every year, there is urgent need to focus attention on the well-being of one of the poorest and socio-economically weakest and much neglected section of population: Inland fisherfolks. They are in huge number, more than 2 crore directly dependent on inland fisheries, many others indirectly dependent. They, unfortunately have no voice in development discourse or decision making processes, nor any even in mitigation measures. Creating an inland fisheries policy, department and institute in every state and at centre can be an important step forward.

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DRP News Bulletin

DRP 091023: MoEF Panel concerned about impacts of Small Hydro

October 9, 2023February 27, 2026 SANDRPLeave a comment

(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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DRP News Bulletin

DRP 121222: Green Hydrogen from Hydropower is false solution

December 12, 2022February 23, 2026 SANDRPLeave a comment

(Feature Image: Reservoir of Vyasi hydro project dam on Yamuna river in Dehradun. Credit: Varsha Singh/The Third Pole.)

A section of the hydro lobby has been trying to push hydropower in the name of producing green hydrogen as an alternative energy source. However, it has been known for a long time that this is a false solution. There cannot be green hydrogen when sourced from hydropower as not only hydropower projects have huge social and environmental footprint, they also have huge carbon footprint as the following article shows. It would be best to out rightly reject any such claim of green hydrogen when sourced from hydropower project.

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