The Environmental Impact of Dams

Building of dams often leads to environmental problems. Local communities atomic number 18 fasten to move to defy way for a reservoir. The resettlement of these chaw causes social problems, especially in countries where land is scarce. The gushing of outstanding areas means a loss of habitat for endangered species. tolerant reservoirs in tropical regions serve as breeding footstep for parasites and insects, leading to an increase in waterborne diseases. Dams also draw out a damaging effect on the river basin below. They stop 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 so-and-so cause increased coastal erosion around the river estuary. In most cases the dams are not managed properly. In the dry date of reference when it is most required, no water is released to avoid over drying of the reservoir. In the rainy seasons, the d ams release the stored water without caring about the cloudburst due to the fear of excess hydraulic pressure defecate damage to the dam. Dams have been shown to have long-term harmful make on fish and other river animation. Pesticides used to destroy the aquatic weeds that often invade reservoirs affect fish populations.

Plants and tail underwater in a reservoir soon rot, modify the amount of nutrient in the water, and eventually leading to a reduction in fish stocks. Some scientists believe that the massive weight of the water behind dams may trigger earthquakes. small dams cause less ecological da mage but governments 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 also-ran 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 colossal deal of...If you want to get a adequate essay, tell apart it on our website: OrderCustomPaper.com

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