Answer:
Poor
monsoons causes crop failure. The crops should be given water at appropriate
stages of life, to increase the expected yields of crops.
Under such circumstances several different kinds of irrigation systems are
developed to ensure the supply of water to agricultural lands, depending on
kinds of water resources. (1)
The irrigation system are
(i) Wells They are of two types
(a)Dug wells In this type of well, water is collected
from water bearing strata.
b) Tube wells In this type of well, water is lifted
by pumps from deeper strata for irrigation. (1)
(ii) Canals In this systems, canals receives water from
one or more reservoirs or from rivers. The main branch is divided into branch
canals with many distributaries to irrigate fields. (1)
(iii) River lift system Most common in areas, where
canal flow is irregular or insufficient due to less numbers of reservoirs
release. In lift system water is directly drawn from rivers for irrigation in
areas near to rivers. (1)
(iv) Tanks These are small storage reservoirs intercepting
and storing the run-off of smaller
catchment areas. (1)
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