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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
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