San Gabriel River And Its Drainage Problems

San Gabriel River and its drainage problems In 1938, the San Gabriel Mountains (Los Angeles, USA) experienced heavy amounts of rain. This then bring in to mass movement, such as mudslides, and flash flooding, which flushed with with(predicate) downtown LA, damaging buildings, homes and vehicles. After these events, a flood perpetration was formed, and networks of hard defences were set up along the long profile of the San Gabriel River. The aim: decrease the hydrograph, and reduce the risk of flooding. In the focal ratio course of the San Gabriel River, the San Gabriel Dam was built.

This is a filtering dam, and uses sluice provide to interdict large boulders from progr essing down river. By doing this, the amount of posit in the river decreases, which reduces the possibility of flooding from high sediment yield, and in the baptismal font of a flood, at that place leave behind be no detrimentally large sediment. Problems, however, are that the speed of the river increased as there is less load to carry, which makes the wear proces...If you want to get a full essay, order it on our website: OrderEssay.net

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