The Environmental Impact of Dams

Building of dams often leads to environmental problems. Local communities argon secure to move to claim way for a reservoir. The resettlement of these agglomerate causes social problems, especially in countries where land is scarce. The gushing of striking areas means a loss of habitat for endangered species. with child(p) reservoirs in tropical regions serve as breeding mistreat for parasites and insects, leading to an increase in waterborne diseases. Dams also protract a damaging effect on the river basin below. They rest 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 keister cause increased coastal erosion around the river estuary. In most cases the dams are not managed properly. In the dry time when it is most required, no water is released to avoid over drying of the reservoir. In the rainy seasons, the dams release the s tored water without caring about the glut due to the fear of excess hydraulic pressure take hold damage to the dam. Dams have been shown to have long-term harmful make on fish and other river animateness. Pesticides used to destroy the aquatic weeds that often invade reservoirs affect fish populations.

Plants and damn underwater in a reservoir soon rot, alter the amount of nutrient in the water, and eventually leading to a reduction in fish stocks. Some scientists believe that the large weight of the water behind dams may trigger earthquakes. small dams cause less ecological damage but governments and investors are often attracted by large-scale dam-building projects. The o ver enthusiasm and depravation in these proj! ects, result in ill placed and faded dams. The failure of such dams has caused a number of floods leading to death of life and property. Let us take up a few examples so as to determine the extent of butchery caused by the dams. Aswan High Dam on the river Nile in Egypt collects a great deal of...If you want to get a adequate essay, pasture it on our website: OrderEssay.net

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