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COSMIC RHINO

ongoing coverage Amazon dams

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Hydroelectric dams may jeopardize the Amazon's future

Date:June 14, 2017Source:University of Texas at Austin

Hundreds of built and proposed hydroelectric dams may significantly harm life in and around the Amazon by trapping the flow of rich nutrients and modifying the climate from Central America to the Gulf of Mexico. These findings, published in Nature, emerge from a multidisciplinary, international collaboration of researchers from 10 universities, led by scientists at The University of Texas at Austin.

 

report continues

 

University of Texas at Austin. "Hydroelectric dams may jeopardize the Amazon's future." ScienceDaily. ScienceDaily, 14 June 2017. <www.sciencedaily.com/releases/2017/06/170614133749.htm>.

 

the building program is massive as will be the damage

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I saw an article on this too @COSMIC RHINO - it said a big problem is that all the environmental permits for the dams only examine each individual dam's local effect - rather than the combined effect of all the dams on the Amazon ecosystem as a whole.

 

I hate dams with a passion and wish people would learn from history and quit making these Faustian bargains...

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Unexamined synergies: dam building and mining go together in the Amazon

22 June 2017 / Zoe Sullivan

40 major dams are planned for the Brazilian Amazon in the next 20 years; driving the trend are the high-energy demands of a powerful mining industry and mineral export businesses.

 
 
  • 40 large hydroelectric dams are slated for the Amazon basin over the next 20 years, feeding the massive electricity needs of an energy-hungry mining industry — digging, processing and exporting iron, aluminum, manganese and gold.
  • But mining’s energy needs are rarely linked to plans for new dams or their environmental impact assessments. Amazon mining and dam building have repeatedly in the past resulted in major harmful environmental and social impacts, including displacement of indigenous and traditional communities.
  • Transnational mining companies and consortiums are major beneficiaries of government largesse through subsidies, tax breaks and the energy obtained from newly commissioned Amazon dams.
  • Brazilian infrastructure development in the Amazon, including dam building and mining, could — if environmental and social issues are not properly addressed — turn the Amazon into a national sacrifice zone where biological and cultural diversity are drastically diminished.

story continues

 

 

https://news.mongabay.com/2017/06/unexamined-synergies-dam-building-and-mining-go-together-in-the-amazon/

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Posted (edited)

A satellite study of the Santo Antônio and Jirau dams in the Amazon found the area flooded by their reservoirs to be much greater than projected by the Environmental Impact Assessment (EIA) done as part of the Brazilian dams’ licensing process.

 

report continues  https://news.mongabay.com/2017/07/study-brazilian-mega-dams-caused-far-more-flooding-than-eia-predicted/

 

when compared with the environmental assessment projections   , satellite images   show the area upstream of the river is 69.8% larger , natural forest areas are 52% more often flooded

 

 

sediment flowing from the Andes is an important part of river health ,the dam will block this

 

having a larger flooded area means that more sediment will accumulate behind the dam wall and shorten the effective opertinfg life of the dam

 

these dams have caused flooding an forest death

 

by 2015 the combined reservoir area of the 2 dams was 341 square km over the environmental assessment projections

 

the dams have submerged 468 square km or 52% over the projection

 

the projections were cautious and thins are likely to get worse over time

 

these dams have had major adverse impacts on Bolivia  and contributed to a severe 2014 flood killing 75,000 people ,250 000 cattle and an economic loss of USD 180 million 

Edited by COSMIC RHINO

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 200 Munduruku people from 138 villages  occupied the building site for the São Manoel hydroelectric dam  on the Teles Pires river in the east of the Amazon.

 

they are concerned especially how the urns containing the remains of their ancestors are regarded as items for museums ,nor as something sacred to stay with the community

 

they will not move until this issue is resolved

 

at the moment the authorities are seeking a negotiated solution

 

please see  https://news.mongabay.com/2017/07/brazils-indigenous-munduruku-occupy-dam-site-halt-construction/?n3wsletter&utm_source=Mongabay+Newsletter&utm_campaign=8d5d87ca87-newsletter_2017_07_20&utm_medium=email&utm_term=0_940652e1f4-8d5d87ca87-67239299

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