River basins (or catchment areas) are the areas from which piddle drains into a river. They vary greatly in characteristics only if are all managed to allow human activities to develop. I allow analyse this management through analysing hard and soft design in both LEDCs and MEDCs.
The River Thames in the MEDC of the UK flows through the major urban areas of London and Oxford. Human activities have reachly developed on base the river for its transport, water and tourist resource. However, careful management is needed to cheer these economically valuable settlements from flooding. In London, flooding comes both from the ocean (in tidal flooding) and from the river (in tide locking and river flooding) as well as on the land (from sewer flooding and surface water flooding). The Thames Barrier protects 420 000 London properties, £80 billion of property and 1.25 cardinal people from storm surges from the North Sea: a clear example of hard engineering. £535 million has been spent on a 520 metre removable barrier that is the second largest in the world. However, it ordain one day not be big teeming as due to global warming and rising ocean levels water may one day breach its defences.
there are plans for a new defence further into the Thames estuary or for a £4 billion overhaul of the existing Thames barrier. However, this unsustainable, pricey and side-effect causing defence (with water flowing to the sea held okay by the flood barriers risking flooding in London) is not very sustainable.
In the LEDC, Bangladesh, river basins are managed to extract maximum benefits and minimum consequences from the native phenomenon of annual floods. The Flood Action Plan, funded by the World Bank, is embarking on a 100 year plan to build 8000km of levees in a country with extreme social problems. This is because flooding kills many people in the annual floods that occur in Bangladesh because...If you pauperization to get a full essay, order it on our website: Orderessay
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