Geography
Picture 7(b) is Agrasen ki Baoli (New Delhi) — a step-well whose current form is believed to be constructed in the 14th century. The water level varies seasonally. It is designed to ensure water availability throughout the year with all fluctuations. Write a short note on any traditional irrigation method.
Answer
One of the traditional methods of irrigation include Well Irrigation.
A well is a small hole dug in the surface of the earth to obtain water from the water table for irrigation and other purposes. Wells are usually of two types: Lined wells (manmade), and Unlined wells (formed by different natural phenomena).
Well irrigation is a cheap, simple and dependable source of irrigation. It is practised in areas where plenty of groundwater is available and the depth of the water table does not exceed 15m.
Related Questions
What is meant by furrow irrigation? What is its advantage?
Picture 7(a) shows drip irrigation in a field. List its advantages.
Give a geographical reason for each of the following:
(i) Loss of water due to evaporation is highest in tanks.
(ii) Many cities have banned construction of tubewells.
(iii) Rabi crops are grown in areas with irrigation facilities.
Given a choice which modern method of irrigation would you use to irrigate your farm? Give reasons to support your answer.