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IRRIGATION - Coggle Diagram
IRRIGATION
Wells
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U.P, Haryana, Goa, Punjab
Maharasthra
types of
methods
Lever
Method
strong log laid across a fulcrum
and a bucket attachhed to a bamboo
when the bucket is full the stone is left
so the bucket comes up
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Inclined plane
method
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a pair of bullock is made to go down a slope
so that the bucket from the well comes up by
the pulley system
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Canals
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U.P, M.P, A.P, Rajasthan, Haryana,
Jammu and Kashmir, Assam etc
advantages-
the places which receive less
rainfall irrigation is used a lot so
they have good harvests
disadvantages-
give rise to swamps
make the water table unproductive
capacity of soil to absorb water becomes less
Tanks
small bund of stones built across
a stream to hold water and then thru
narrow channels is reached to the fields
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rivers of deccan r not snow fed so they depend on rainwater the hard rocks do not absorb water wells cannot be made there the terrain of deccan plateau is uneven so tanks can easily be built there
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disadvantages
silted up
tanks go dry when monsoon fails
non- perennial
occupy a large fertile area
lifting of water is a costly task
Tubewells
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advantages-
clean water is brought up
irrigate large area
perennial(thru out the yr)
independent source of irrigation
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