Question

What are the three advantages of tank irrigation?

Answer 1

1. Ideal for Rocky Terrains: In areas with hard, non-porous crystalline rock structures (such as Peninsular India), digging wells or canals is extremely difficult and costly. Tanks are a natural and practical solution that store water on the surface in natural rocky depressions.
2. Economical and Low Maintenance: Most traditional tanks are constructed by building simple earthen or masonry walls (bunds) along natural slopes. They do not require expensive heavy machinery, deep boring, or continuous mechanical power (such as electricity or diesel) to function, making them extremely cost-effective for local communities.
3. Ecological and Hydrological Benefits: Tanks collect and store excess rainfall that would otherwise run off and become waste. Over time, the stored water slowly seeps through the margins, contributing to the local groundwater table and serving as a key water source for cattle and household usage during dry seasons.