disadvantages
of tehri dam
Answers
the disadvantages are visible that lakhs of people houses were submerged in the making of dams there lands all the things the property submerged in water. They are roming here and there the government decided to give money but never do this.
DISADVANATGES:
1. are extremely expensive to build and must be built to a very high standard.
2. The high cost of construction means that they must operate for many decades to become profitable.
3. The flooding of large areas of land means that the natural environment is destroyed.
4. People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their farms and businesses. In some countries, people are forcibly removed so that hydro-power schemes can go ahead.
5. The building of thehri dam can cause serious geological damage. For example, the building of the Hoover Dam in the USA triggered a number of earth quakes and has depressed the earths surface at its location
6. thehri dam built blocking the progress of a river in one country usually means that the water supply from the same river in the following country is out of their control. This can lead to serious problems between neighbouring countries.
7. Building a dam alters the natural water table level. For example, the building of the Aswan Dam in Egypt has altered the level of the water table. This is slowly leading to damage of many of its ancient monuments as salts and destructive minerals are deposited in the stone work from rising damp caused by the changing water table level.