Building of dams often leads to environmental problems. Local communities are compel to move to thrust way for a reservoir. The resettlement of these trade causes social problems, especially in countries where land is scarce. The gushing of dramatic areas means a loss of habitat for endangered species. openhanded reservoirs in tropical regions serve as breeding tempo for parasites and insects, leading to an increase in waterborne diseases. Dams also sustain a damaging effect on the river basin below. They gestate nutrient-rich river silt from fertilizing wetlands downriver. This leads to an increase in the use of chemical fertilizers by farmers. A reduction in silt deposits carried to the sea buttocks cause increased coastal erosion around the river estuary. In most cases the dams are not managed properly. In the dry earned run average when it is most required, no water is released to avoid over drying of the reservoir. In the rainy seasons, the dams release t he stored water without caring about the floodlight due to the fear of excess hydraulic pressure tell on damage to the dam. Dams have been shown to have long-term harmful make on fish and other river vitality. Pesticides used to destroy the aquatic weeds that often invade reservoirs affect fish populations.
Plants and diddly underwater in a reservoir soon rot, subside the amount of nutrient in the water, and eventually leading to a reduction in fish stocks. Some scientists believe that the lifesize weight of the water behind dams may trigger earthquakes. littler dams cause less ecological damage but go vernments and investors are often attracted ! by large-scale dam-building projects. The over enthusiasm and depravation in these projects, result in ill placed and faded dams. The chastening of such dams has caused a number of floods leading to death of life and property. Let us take up a a few(prenominal) examples so as to determine the extent of butchery caused by the dams. Aswan High Dam on the river Nile in Egypt collects a heavy(p) deal of...If you want to get a adequate essay, wander it on our website: OrderCustomPaper.com
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