ES 2WW3 - Lecture 5 - Dams and Increasing Supplies - A2L edited

ES 2WW3 - Lecture 5 - Dams and Increasing Supplies - A2L edited

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Earth Sc 2WW3 Dams & Increasing Water Supplies
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Dams: Most Fundamental Tools of Water Engineering • Modern world: Condit Dam, Washington State ( 1910)
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Principal Storage Zones in Reservoir
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Role of Dams
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Dams and Controversies
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Dams and Wildlife • Ecology of freshwater environments can be significantly altered
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Dams and Soil Fertility
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Artificial Floods
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Dams & Unintended Impacts • Major concern in 1/5 of the UNEP regions
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Dams and River Regulation
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Rates of Dam Building • Various social and economic factors involved • Trend varies regionally
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New Hydropower Developments
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Environmental Impacts of Hydropower Source of Electricity Water Impacts Total Weighted Environmental Impact Hydro – run-of-river 0 21 Hydro-dam impoundments 5.5 30.5 Wind 0 34.5 Solar – photovoltaic 0 41 Biomass 4 47 Nuclear 4.5 47.8 Natural gas 2 71-91 Coal 3.5 216.5 Oil 5 265
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Canada: Top Hydropower Producer
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Unformatted text preview: Drainage Basins of Canada An area that collects all precipitation received as a runoff or groundwater flow into a particular river or set of rivers Hydropower Production Worldwide World Hydropower Capacity in 2007 Three Gorges Dam Largest dam in the world Plays a number of vital roles in China Yangtze River & Floods in China Improving Water Supply in China Social and Economic Impacts Three Gorges Dam forced: Yangtze River and Sediments Wastewater Treatment in China Large-scale River Diversions James Bay Hydro Project Launched in 1971 James Bay Hydro and Native People 1972 Diversions & Lake Chad 2001 Since 1963: Increasing Water Supplies Exploiting the Cryosphere Artificial Avalanches Icetec Harnessing Icebergs Rainwater Harvesting Harvesting Fog and Dew Collected artificially in various parts of the world Low-Energy Solutions to Harvesting...
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This note was uploaded on 04/08/2012 for the course EARTH SCIE booger taught by Professor Bum during the Fall '11 term at McMaster University.

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ES 2WW3 - Lecture 5 - Dams and Increasing Supplies - A2L edited

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