Describe briefly the Khadin' system of rainwater harvesting practiced in Rajasthan.

● The khadin system is based on the principle of harvesting rainwater on farmland and subsequent use of this water-saturated land for crop production.

● A khadin is also called a dhora is traditional construction designed to harvest surface runoff water for agriculture.

● Khadin is first designed by the Paliwal Brahmins of Jaisalmer, western Rajasthan in the 15th century.

● Its main feature is a very long (100-300 m) earthen embankment built across the lower hill slopes lying below gravelly uplands.