Yes and no, they provide a plentiful source of clean energy, however, they also have a profound impact on local wildlife. Many fish species would not be able to reach the breeding grounds they go to every year, and some organisms would also die when a lake is created. In my opinion, the energy provided justifies the damage, as beyond construction, no CO2 is emitted.
Dams are bad for the enviorment, because they block the nautral flow of a river, and don't allow fish to reach their breeding grounds. But dams are good for people.
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No one simple answer. Dams CAN be harmful. They can also prevent deadly floods that cause mass destruction- which itself harms the environment. The can provide water for cities- and for irrigation of crops. They can provide electrical power with very little pollution. And dams CAN be provided with fish ladders to permit fish to move around the dam.
Dams are harmful in numerous ways. Dams are harmful to the environment, humans, and river life. Dams are known to destroy the delicate eco-system.
cause holds so much water.
dams are helpful
floods
Low-head dams are dangerous because people fail to realize that these dams are just as dangerous as larger dams. The movement of the water at the base can pull people under and trap them. These low-head dams have been nicknamed 'drowning machines.'
Backwash can pin you and the boat indefinitely.
Portage. Low head Dams are very dangerous.
dams
Dams store water for agriculture, as well as generating electricity through hydro power. This is renewable energy with no carbon dioxide emissions to cause global warming. Recent studies show, however, that some dams release methane from the depths behind the dam. Methane is a much more dangerous greenhouse gas, so this is not good news!
there are about 50 dams
how many dams in the river rhine11 dams whith hydropower stations .
no
18 dams are in pakisthan
19 dams
No, but it does have weirs.