3.3. Rainwater Harvesting

Many thought that given the disadvantages and rising resistance against the multi-purpose projects, water harvesting system was a viable alternative, both socio-economically and environmentally. In ancient India, along with the sophisticated hydraulic structures, there existed an extraordinary tradition of water-harvesting system. People had in-depth knowledge of rainfall regimes and soil types and developed wide ranging techniques to harvest rainwater, groundwater, river water and flood water in keeping with the local ecological conditions and their water needs.

This chunk discusses the historical significance of rainwater harvesting in ancient India. People understood their local environment well, including rainfall patterns and soil types. They created various techniques to capture and manage water based on their specific needs and ecological conditions. This illustrates a sustainable approach to managing water resources.

Imagine a farmer who knows the exact times of the rainy season and builds small channels and ponds to collect water during those rains. This not only helps in watering his crops but also ensures he has water available during dry spells.

In the semi-arid and arid regions of Rajasthan, particularly in Bikaner, Phalodi and Barmer, almost all the houses traditionally had underground tanks or tankas for storing drinking water. The rainwater can be stored in the tankas till the next rainfall making it an extremely reliable source of drinking water when all other sources are dried up, particularly in the summers.

This chunk highlights the common practice of rooftop rainwater harvesting in areas like Rajasthan. Houses are equipped with 'tankas', where rainwater is collected and stored. This is especially crucial during summers when other water sources may become scarce. It portrays how locals have adapted to their environment for consistent water supply.

Think of it like collecting rainwater in a large bucket. This bucket (or 'tanka') is kept cool and ensures that even during the hottest times, you have fresh water available, similar to how your refrigerator keeps food fresh.

Today, in western Rajasthan, sadly the practice of rooftop rainwater harvesting is on the decline as plenty of water is available due to the perennial Indira Gandhi Canal, though some houses still maintain the tankas since they do not like the taste of tap water.

This chunk discusses the decline of traditional rainwater harvesting due to new water supply sources like the Indira Gandhi Canal. Despite this, some households continue to use tankas for fresh-tasting water. This reflects a shift in water management practices in urban settings where newer systems coexist with traditional methods.

It’s like having a well-stocked pantry but still preferring homemade dishes. While the canal supplies water, some people still cherish the taste of naturally collected rainwater, just like one might prefer grandma's cooking over takeout.

Fortunately, in many parts of rural and urban India, rooftop rainwater harvesting is being successfully adapted to store and conserve water. In Gendathur, a remote backward village in Mysuru, Karnataka, villagers have installed, in their household’s rooftop, rainwater harvesting system to meet their water needs.

This chunk highlights successful modern implementations of traditional rainwater harvesting in places like Gendathur. Villagers have adapted these systems to support their water needs effectively, showcasing how local initiatives can serve as solutions to water scarcity.

Consider how a community garden draws together neighbors to cultivate food together. Just like that, Gendathur's villagers have come together to collect and share rainwater, creating a sustainable source of water that benefits everyone in the community.

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