words per minute
6
GourabBera
00:00
Speed
Punjab, Haryana, West Bengal and Tamil Nadu have a good network of canals. Dams also a help in the production of electricity. When water from the lake behind the dam is made to fall from a high point, it is used to turn turbines which produce electricity. The dam also helps to control floods in the river. A project which helps to provide water for irrigation, produces electricity and controls floods in the river is called a multipurpose project. our government has built a number of multipurpose projects.
Some of them are shown on the map. Find out the names of the others dams and the rivers they are build on. When it rains , some water seeps through the soil and goes deep into the ground. We can reach this underground water through wells. Where is water is not too deep, we normally use the Persian wheel to draw out this water. Deep tube wells have to be bored when the water is at a great depth.