Question

(iii) Compare the advantages and disadvantages of multi-purpose river projects.

3. Answer the following
questions in about 120 words.
(i) Discuss how rainwater harvesting in semi-arid regions of Rajasthan is carried out??​

Answer 1

Answer:

A dam built across a river often serves more than one purpose at a time and it is termed as a multipurpose project. It comes with some advantages at the same time some disadvantages. The advantages are flood control in flood-prone areas, irrigation facilities, hydroelectricity, check soil erosion etc.

i) In semi-arid regions of Rajasthan every house had underground tankas to store the water for drinking purposes. (ii) These tankas are large and deep which were built inside the main house or the courtyard. ... (iv) The rainwater collected, is stored in the tankas providing drinking water till the next rainy season.

Explanation:

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