- 10% Quota for general category
- NITI Aayog proposes all India Judicial Service Examination
- CAG Report on government spending
- Need for Citizenship (Amendment) Bill
- Clause 6 of Assam accord : indepth analysis
- Collegium system for appointment of judges
- Fear of Executive Courts
- Tamilnadu Reservation Policy
Governance & Social Justice
- Bhasha Sangam Program : Celebration of Linguistic Diversity
- Cabinet approves revision in list of scheduled tribes of Arunachal Pradesh
- Does India need a coal commission?
- Concerns in Ayushman Bharat
- Depression at workplaces : A major health issue in India
- How to bridge Gender gap in India : Mckinsey Global Institute Report
- Government plans to rename Indian Forest Service
- IGOT Program for Competent Civil Services
- Indian Medical Council Amendment Bill 2018
- National Commission for Indian Systems of Medicine and Homoeopathy
- Government bats for National Medical Devices Promotion Council
- Parental consent for vaccination
- India Signs Agreement with OECD for PISA 2021
- Kerala’s wall of resistance
- Should an IAS officer use Social Media?
- Social media addiction
- Legal Status for SSC
- Tripal Talaq Bill 2018
- Web Wonder Women Campaign by Ministry of WCD
- West Bengal Leaves Ayushman Bharat : In-depth Analysis
- Why Asian Infrastructure Investment Bank Is Important For India
- What Is The Asia Reassurance Initiative Act
- E-Passport for Indians
- What Is G-77
- Failed Coup In Gabon
- Bagladesh Election
- Powering South Asian Integration
- ISRO’S New Station In Bhutan
- Kenya Replace Pictures Of Leaders on Coins With Animal
- Macedonia Name Change
- Why Norway Is Important For India
- Why India Need Membership Of NSG
- Pakistan Declared A Hindu Temple A Heritage Site
- Raisina Dialogue 2019
- India’s Republic Day Guest
- India To Take Over Sittwe Port Operation In Myanmar
- U.S. Mexico Border
- US Government Shutdown
- US Venezuela Crisis
- What is Angel Investment?
- Byorung Bridge
- India’s Airport Privatization Plan
- Rationalisation of GST Rates
- 1st Advance Estimates of Economic Growth by CSO
- Democracy Index 2018
- E-DRISHTI Software by Ministry of Railways
- What is GAFA tax
- Ganga Expressway to be Built in UP
- Green-Ag Project launched by India with UN FAO
- Issue of Tax Evasion under GST
- Improvements under GST Regime
- ICAT Certification for Automobilies
- What is Indian Bridge management System?
- Draft Information Technology Amendmenet Rules 2018
- Jamrani multipurpose DAM Project
- What is KALIA Scheme?
- MANDAL DAM
- Mega Merger!
- MSP for minor forest produce
- NITI Aayog suggestions on farm Economy
- India’s first vertical-lift Bridge
- Paradip Hyderabad pipeline
- Measures to address issues in Sugar industry
- Capital infusion in PSBs
- Renukaji dam
- PM Modi inaugrates Rice Research Institute
- Section 74 of the insolvency and Bankruptcy Code
- Social & Environmental Cost of Building dams
- Solar feeder Maharashtra model
- RBI Tokenisation
- Sikkim-Universal basic income
- Global Risks Report 2019
Science & Technology
- Why Beech Trees Dying
- Beat Plastic Pollution Resolve by India
- Why USA Is Killings California Sea Lions
- Carbon Tax
- China’s War On Particulate Air Pollution Is Causing More Serve Ozone Pollution
- CITES Washington Convention
- Coastal Regulation Zone
- Melting Ice Sheets And Release Of methane
- National Clean Air Programme Feature &Critical Analysis
- Oceans Are Heating Up 40% Faster Than Previous Estimates
- Revival Of Iran’s Lake Urmia
- India submitted sixth national report to Convention on Biological Diversity
- How Wild Fire Affect crop and vegetation Production
- NITI Aayog’s SDG Index
Spice of the Month
- GS 3 || Economy || Infrastructure || Power
Why in News?
- Constructions of large dams have some potential repercussions to the society.
Dams & The Repercussions
- Most developed countries have reduced the construction of large dams for the production of electricity in recent decades, developing countries, including Brazil, have embarked on even more massive hydropower developments.
- Countries don’t usually count the impacts of large dams in these scenarios:
- Loss because of deforestation,
- Loss of Biodiversity,
- Social Consequences, e.g. displacement of thousands of people
- Economic Damages, suffered by the denizens of the terrain
- These effects should be computed in the total cost of such projects. Worse still, these projects ignore the context of climate change, which will lead to lower amounts of water available for storage and electricity generation.
- Hydropower is the leading source of renewable energy worldwide, accounting for as much as 71 % of the total in 2016. Developed countries in North America and Europe built thousands of dams between 1920 and 1970, until the best sites had already been developed and environmental and social concerns made the costs unacceptable.
- Many large hydropower developments in these countries are now at the end of their working lives, and more dams are being removed than built in North America and Europe. In the U.S. alone, 546 dams were dismantled between 2006 and 2014.
- When a large dam is built, the result is a downstream loss of a great many fish species that are important to riverine populations.
- “The cost of removing a dam once its useful life is over is extremely high, and should be taken into account when computing the total cost of a new hydro development,”
- “If the cost of removal had to be included, many dams wouldn’t be built.”
- The first dams were also built in North America and Europe to supply power to rural areas and provide water for irrigation systems. “These projects had social purposes in the past. In contrast, the dams now under construction along the rivers of the Amazon basin in South America, on the Congo River in Africa and on the Mekong River in Southeast Asia are mostly designed to supply power to steel manufacturers, for example, without benefiting local communities.
- These communities will have to continue somehow making a living despite dwindling fish stocks for 15 or 20 years, for example, and the costs of these projects don’t take such economic and social losses into account.”
- The most exemplary case is the proposed Grand Inga Dam on the Congo River at Inga Falls, the world’s largest waterfall by volume. The dam could increase the total amount of power produced in Africa by over a third and will export electricity to South Africa for use by mining companies.
Impact of climate change
- Climate change will strongly affect the dams that have been built in the Amazon basin in recent years, according to the article.
- The Jirau & Santo Antonio dams on the Madeira, completed in the last five years, are now expected to produce only a fraction of the 3GW they were each designed to generate owing to climate change and the small storage capacity of their run-of-the-river reservoirs.
- Most of the climate models predict higher temperatures and lower rainfall in Madeira basins.
- Like the effects of climate change, the effects of changing land use on power generation potential are frequently ignored by dam builders.
- Deforestation in the region–deforestation inhibits rainfall and reduces groundwater in tropical rainforest areas.
- Social and environment cost of building dams surpass their desired economic benefits. Elucidate.