lect03-18-10

Is likely to be opposed by beneficiaries of current

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Unformatted text preview: ter prices and achieve conservation, but this is likely to be opposed by beneficiaries of current system Dams & Reservoirs Possible Advantages & Disadvantages Reservoir Sedimentation and Its Consequences There are nearly 45,000 large dams (over 15m high) in the world, with a total capacity of nearly 9,000 km Sedimentation Rates in Selected Countries 0.05 annual sediment yield/reservoir storage 0.04 0.03 0.02 0.01 0 World average min. average max USA Romania Slovakia Japan Spain Algeria China Source: (ICOLD, 1997, question 74) Note: Minimum, Average, and Maximum values do not exist for all countries Sediment Management Options Prevention watershed management (agriculture, forestry) Structural Accommodation sediment traps - dikes, expansion of storage Removal flushing, dredging, hydrosuction (HSRS), trucking Su...
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