Water Conservation Techniques

The terms listed—kulls, kunds, ahars, pokhars, khadins, arakere, kolas, surangam, tadagams, eris—are traditional water conservation and irrigation structures developed in different regions of India. Each of these represents an indigenous technique for harvesting or managing water suited to local conditions. Examples:

Khadins – Rajasthan (runoff farming)
Surangam – Kerala (horizontal wells)
Eris – Tamil Nadu (tanks)
Ahars – Bihar (channel-based irrigation)
Explanation of Other Options:

(B) Intercropping methods: These refer to planting multiple crops together and are unrelated to water systems.
(C) A variety of manures: Manures are used for fertilizing soil, not water management.
(D) Seed storage methods: These relate to preservation techniques, not landscape structures.