Page 55 - sst_class_04
P. 55
well. Farmers get water for irrigation through water tanks, canals, dams etc. The
water stored in dams is used for the generation of electricity, irrigation and other
purposes. These dams, therefore, are also called multi-purpose projects. Some
important multi-purpose projects in India are—Bhakra-Nangal Dam built on the
Satluj river and Damodar Valley Project on the Damodar River.
Farmers in Punjab, Indira Gandhi Canal is a very
Uttar Pradesh and important source of irrigation for the
other state use water farmers in Rajasthan.
pumps to irrigate their
fields.
In India, farmers
dig ditches so that
water can flow
into the fields. Bhakra-Nangal Dam built on the Satluj
River is a multi-purpose project.
Taanka is a raised
platform with a small
opening to fetch water.
It is a traditional form
of rainwater harvesting
for multiple purposes in
Rajasthan.
These days sprinklers and drip irrigation have also been adopted by some Indian
farmers. A piece of equipment used for automatically sprinkling water on plants
is called a sprinkler. In drip irrigation,
pipes are laid along the ground so
that they are near to the soil and roots
of the plants. Water drips out from
these pipes and keeps the soil moist.
Drip irrigation helps in reducing the
wastage of water. Sprinkler Irrigation Drip Irrigation
Conservation of Water
The dumping of waste from industries and drainage in big cities pollute out water
Social Studies-4 55

