Khadins, Bhundis, Ahars and, Kattas are ancient structures examples for?

Water harvesting is a word that refers to the storing of rainwater. Small dams and other reservoirs were traditionally built to capture rainwater for later use. For example, in Rajasthan, there are Khadins and Nadis, and in Madhya Pradesh and Uttar Pradesh, there are Bundhis. Some of the oldest water harvesting buildings, including water conveyance, include ahars and pynes in Bihar and Kattas in Karnataka. These constructions had no harmful effects on the local natural balance and incurred no environmental expenses. Soil conservation, Wood storage, and Grain storage are the wrong answers. Khadins, Bhundis, Ahars and Kattas are ancient structures built for Water harvesting.