Answer the following questions in about 120 words.
Describe how modern adaptations of traditional rainwater harvesting methods are being carried out to conserve and store water.
The traditional methods of rainwater harvesting are:
1. Rooftop rainwater harvesting is the most common practice in the states of Shillong and Meghalaya. Though Cherrapunji and Mawsynram, located at a distance of just 55 km from Shillong receive the highest rainfall in the world, yet there is acute shortage of water in the capital city. Nearly every household has a rooftop rainwater harvesting structure set up.
2. Tamil Nadu is the first and only state to have made rooftop rainwater harvesting compulsory to all houses. There are legal provisions to punish the offenders and defaulters.
3. In many parts of rural and urban India, people are adopting rooftop rainwater harvesting for storage and conservation of water. In Gendathur, a remote village Mysore, Karnataka, the villagers have installed rooftop rainwater harvesting structures in their homes to cater their water needs. As many as 200 households have accepted and installed this system which has earned a distinction of being rich in rainwater.
Based on the information given below classify each of the situations as 'suffering from water scarcity' or 'not suffering from water scarcity'.
(a) Region with high annual rainfall.
(b) Region having high annual rainfall and large population.
(c) Region having high annual rainfall but water is highly polluted.
(d) Region having low rainfall and low population.
Which one of the following statements is not an argument in favour of multi-purpose river projects?
(a) Multi-purpose projects bring water to those areas which suffer from water scarcity.
(b) Multi-purpose projects by regulating water flow helps to control floods.
(c) Multi-purpose projects lead to large scale displacements and loss of livelihood.
(d) Multi-purpose projects generate electricity for our industries and our homes.
Here are some false statements. Identify the mistakes and rewrite them correctly.
(a) Multiplying urban centres with large and dense populations and urban lifestyles have helped in proper utilisation of water resources.
(b) Regulating and damming of rivers does not affect the river’s natural flow and its sediment flow.
(c) In Gujarat, the Sabarmati basin farmers were not agitated when higher priority was given to water supply in urban areas, particularly during droughts.
(d) Today in Rajasthan, the practice of rooftop rainwater harvesting has gained popularity despite high water availability due to the Rajasthan Canal.