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Ian Gabrielson

Five Controversial Dams ~ Introduction | Wide Angle | PBS - 3 views

www.pbs.org/...3103

Conflict_and_Peace global_perspectives student_resources ib_geog2009 Freshwater Management issues and strategies Competing demands for water

shared by Ian Gabrielson on 29 Nov 12 - No Cached
  • Ian Gabrielson on 29 Nov 12
     
    "For many developing countries hungry for energy sources, hydropower is an attractive option. But dams also can place heavy burdens on surrounding populations and eco-systems. While China touts its Three Gorges dam - the world's largest - as environmentally friendly, the United States has begun tearing down a number of its own structures for safety, economic, and environmental reasons. To broaden your knowledge of dams around the world, explore below the economic, environmental, social, and political aspects of five big dam projects in Turkey, Brazil, Laos, Lesotho, and China. "
Ian Gabrielson

The Mekong | The Economist - 1 views

www.economist.com/...erways-survive-its-development

Freshwater The water system Drainage basins and flooding Competing demands for water global_perspectives student_resources teacher_resources water_conflicts water IB Global Politics Management issues and strategies Power Sovereignty and International Rela

shared by Ian Gabrielson on 12 Feb 16 - No Cached
  • The Mekong region is Asia’s rice bowl: in 20
  • support the world’s biggest inland fishery, accounting for a quarter of the global freshwater catch, feeding tens
  • millions of pe
  • ...14 more annotations...
  • 14 lower Mekong countries (Myanmar, Laos, Cambodia, Thailand and Vietnam) produced more than 100m tonnes of rice, around 15% of the world’s total.
  • The region’s fertile soil depends on nutrient-rich sediment that the Mekong carries downriver, mainly during the rainy season from June to October;
  • The region boasts remarkable biodiversity; only the vast basins of the Congo and the Amazon compare to or surpass it
  • here are more than 20,000 types of plant and nearly 2,500 animal species; freshwater dolphins and giant catfish; spiders 30 centimetres across and, in a limestone cavern in Thailand, a day-glo pink, cyanide-secreting millipede
  • he human diversity is striking, too: Tibetan monks pray; Burmese traders buy and sell; Cambodian fishermen cast nets; Thai farmers reap; Vietnamese markets float. The history is as rich as the soil. The Bud
  • a smiled while resting at the northern Lao city of Luang Prabang. Angkor Wat on the Mekong-fed Tonle Sap lake was among the biggest cities of the preindustrial world. The Khmer empire that built it dominated South-East Asia for longer than there have been Europeans in the Americas.
  • s its currents are rechannelled down copper conduits to power far-off cities the river itself will be trapped behind a series of concrete walls. Its fisheries, agriculture and biodiversity will suffer; the lives lived on its banks will be reshaped with scant regard for the feelings of those who lead them
  • t least 86,000 have been built over the past six decades, providing 282 gigawatts (GW) of installed hydroelectric capacity by 2014
  • y 2020 it wants an astonishing 350GW of installed hydropower capacity; in the European Union that would be enough to meet about three-quarters of total electricity needs. The dam at Wunonglong, about 300 metres long and more than 100 metres high, will provide a smidgen less than one of those extra gigawatts. The other 13 are expected to add 15.1GW mor
  • Downriver countries intend to build another 11 large dams on the Mekong, with dozens more planned for its tributaries
  • he dams will change the quality of the water in the river and the rate at which it flows. Some of this change could be for the better. Dams can prevent flooding by regulating the flow of water downstream. But some Mekong riverbank agriculture would not welcome too steady a flow
  • Increasing water in the dry season would shrink riverbeds, leaving less space for crops—millions of Mekong-basin dwellers grow vegetables on riverbanks. Reducing water in the rainy season produces smaller floodplains with less sediment deposited in them, impoverishing the soil.
  • According to International Rivers, an environmental NGO, the full cascade of dams planned for the Lancang would trap nearly all of the sediment coming from China, cutting the water’s sediment load in half.
  • And the dams lower down could worsen the problem; the clear, “hungry” water that flows from them in spates will carry away existing sediment in riverbanks and riverbeds. Some of that will be deposited farther still downstream; some will wash uselessly out t
  • Ian Gabrielson on 12 Feb 16
     
    Excellent set of articles about the situation in the Mekong
Kathleen Noreisch

In pictures: China's Three Gorges dam resists surging Yangtze floods | Environment | gu... - 3 views

www.guardian.co.uk/...three-gorges-dam

china ib_geog2009 freshwater water_management dams

shared by Kathleen Noreisch on 03 Aug 10 - Cached
  • Kathleen Noreisch on 03 Aug 10
     
    China's gargantuan Three Gorges dam has passed its toughest test yet as it controlled and released the floodwaters that filled its reservoirs following recent torrential rains
Matt Podbury

Hydrological Effects of Dams | International Rivers - 4 views

www.internationalrivers.org/...1640

dams impacts

shared by Matt Podbury on 13 Sep 10 - No Cached
  • Matt Podbury on 13 Sep 10
     
    Dams and their impacts on the hydrological cycle.
Matt Podbury

BBC News - Demolition dam: Why dismantle a huge river barrier? - 3 views

www.bbc.co.uk/...magazine-18401162

ib_geog2009 Freshwater Management issues and strategies

shared by Matt Podbury on 13 Jun 12 - No Cached
  • Matt Podbury on 13 Jun 12
     
    Demolition dam: Why dismantle a huge river barrier?
Roger Groenink

Report on Renaissance Dam notes concerns for Egypt, Sudan - Al-Monitor: the Pulse of th... - 2 views

www.al-monitor.com/...dam-dispute-leaked-report.html

renaissance dam Competing demands for water

shared by Roger Groenink on 12 Apr 14 - No Cached
  • Roger Groenink on 12 Apr 14
     
    According to the report - whose 48 pages are each signed by all 10 experts on the panel - the panel noted a number of general concerns about their assessment of the studies submitted by Ethiopia. Most of those studies were completed after the project started. Moreover, environmental and social studies have not been able to demonstrate the dam's impact on the downstream countries, Egypt and Sudan.
Kathleen Noreisch

peopleandplanet.net > renewable energy > features > africa : the wrong climate for big ... - 0 views

www.peopleandplanet.net/doc.php

ib_geog2009 freshwater water_management climate_change water_scarcity

shared by Kathleen Noreisch on 13 Feb 10 - Cached
  • Kathleen Noreisch on 13 Feb 10
     
    Some 550 million people in Africa live without electricity and power is critically short in many African countries. But with increasing droughts and climate uncertainty this is not the right time to rush into more big dams when there are so many other promising renewable energy alternatives, says Lori Pottinger
Matt Podbury

BBC News - China acknowledges Three Gorges dam 'problems' - 1 views

www.bbc.co.uk/...world-asia-pacific-13451528

management ib_geog2009 river Management issues and strategies

shared by Matt Podbury on 19 May 11 - No Cached
  • Matt Podbury on 19 May 11
     
    China acknowledges Three Gorges dam 'problems'
Matt Podbury

British Dam Society | Register For Enews - 1 views

www.britishdams.org/...default.htm

management freshwater ib_geog2009

shared by Matt Podbury on 12 May 11 - Cached
  • Matt Podbury on 12 May 11
     
    About Dams (free registration required)
Matt Podbury

BBC News - Laos defers decision on Mekong Xayaburi dam - 1 views

www.bbc.co.uk/13125556

water_conflicts

shared by Matt Podbury on 19 Apr 11 - No Cached
  • Matt Podbury on 19 Apr 11
     
    Conflicts over Laos dam building
Ian Gabrielson

Save the Mekong - 0 views

www.savethemekong.org/issue_detail.php

ib_geog2009 Competing demands for water Freshwater

shared by Ian Gabrielson on 16 Oct 12 - No Cached
  • Ian Gabrielson on 16 Oct 12
     
    An excellent website that looks at the key issues surrounding building Dams upstream on the Mekong. Good for international and local conflicts
Matt Podbury

Floodgates open on experiment to flush out 500 MILLION TONS of sand and silt trapped in... - 3 views

www.dailymail.co.uk/...silt-trapped-Grand-Canyon.html

Management issues and strategies ib_geog2009 grand canyon

shared by Matt Podbury on 22 Nov 12 - No Cached
  • Matt Podbury on 22 Nov 12
     
    500 MILLION TONS of sand and silt released from Glen Canyon Dam  .... and yes, this is from the Daily Mail. Sorry! 
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