Which ancient systems of water harvesting can be rejuvenated? What is the major advantage of these methods?

Explanation

Kattar, ponds, tals, tanks, surang arms pynes and ahars are some of the ancient water harvesting methods.
We can store more amount of water. This water is used for agricultural purpose and also we can generate electricity.
It provides moisture for vegetation over a wide area.
It is protected from contamination of human and animal waste.
It does not provide breeding grounds for mosquitoes like stagnant water collected in ponds.