 | How will u define a Dam? |
Dam Definition: Dam is a barrier built across a river or sea which is high enough to stop the water flowing over it... |
 |  9/3/2011[
,
]
|
|
|
 Dam is a barrier built across a river or sea which is high enough to stop the water flowing over it.
In a river dam, the water which is held back forms a reservoir.
Fresh water from this can be sent through pipes to homes for drinking and washing, or used to water crops. The water can also be used for hydroelectric power schemes.
Today, artificial dams are made of rock and clay or concrete. Dams have been built for more than 5000 years.
The highest dam is the Rogunsky dam in Russia, which is 325 m (1066ft) high. The largest concrete dam is the Grand Coulee Dam across the Columbia River in the U.S.A. It is 167 m (550ft) high and 1272 m (4140 ft) long.
|
|
|
, , , , , , ,
|
|
Home
Tell - A - Friend
Carrie March
