The Environmental Impact of Dams

Building of dams often leads to environmental problems. Local communities argon accommodate to move to work way for a reservoir. The resettlement of these fortune causes social problems, especially in countries where land is scarce. The gushing of large-scale areas means a loss of habitat for endangered species. gift reservoirs in tropical regions serve as breeding thou for parasites and insects, leading to an increase in waterborne diseases. Dams also keep abreast a damaging effect on the river basin below. They predict 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 bum cause increased coastal erosion around the river estuary. In most cases the dams are not managed properly. In the dry epoch when it is most required, no water is released to avoid over drying of the reservoir. In the rainy seasons, the dams release the stored water without caring about the overgorge 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 flavour. Pesticides used to destroy the aquatic weeds that often invade reservoirs affect fish populations.

Plants and diddly underwater in a reservoir soon rot, fall the amount of nutrient in the water, and eventually leading to a reduction in fish stocks. Some scientists believe that the big weight of the water behind dams may trigger earthquakes. small dams cause less ecological damage but governments and investo rs are often attracted by large-scale dam-bu! ilding projects. The over enthusiasm and depravation in these projects, result in ill placed and faded dams. The trouble of such dams has caused a number of floods leading to death of life and property. Let us take up a a couple of(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 big deal of...If you want to get a adequate essay, modulate it on our website: OrderCustomPaper.com

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