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ARTIFICIAL
RECHARGE OF GROUND WATER
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Augmentation
of ground water resources becomes necessary,
when, in a given area or basin the annual development
of ground water exceeds the annual replenishment.
When the natural recharge is slow and not upto
the expected/required level, we have to go in
for artificial recharge of ground water. Various
methods of artificial recharge can be broadly
classified in to two viz. Surface techenique
and sub surface technique.
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Artificial
Recharge through Subsurface Dyke
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The following structures
will come under the surface technique group.
1. Contour bunds
2. Percolation tanks
3. Orrigation tanks
4. Individual well recharge
The sub surface techniques
include
1. Sub surface dykes
2. Recharge tube wells
3. Recharging trenches
4. Injection wells
Site
Selection for artifical recharge
Various
Techniques in the selection of site for AR
Assessment
of sub surface potential for ground water recharge
Favourable
recharging zones in Chennai city
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