Question

Difference between ancient water harvesting and modern water harvesting

Answer 1

Are you asking about crop harvesting?

Answer 2

Ancient water harvesting:

From rooftops, they collected water and stored it in tanks built in their courtyards. From open community lands, they collected the rain and stored it in artificial wells. They harvested monsoon runoff by capturing water from swollen streams during the monsoon season and stored it various forms of water bodies.

Modern water harvesting:

A dam is constructed underground to obstruct the flow of underground water and create a reservoir to store water. During the rains, the water percolates from the surface and reaches these underground reservoirs, increasing the water level by a considerable amount.