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In
the Tikri kalan the top impermeable clay & kankar formation exists
upto a depth of 28m below ground level (bgl), which is followed by
layer of Kankar and silt which exists upto a depth of 52m bgl.
A
comparative study of water level map of 1960 and 2002 shows in Tikri
kalan the water level which was at 2 to 5m below ground level has
gone down to 10 to 20 mts bgl.
In
Tikri kalan the occurrence of fresh water in alluvium formation is
upto a depth of 30m. Below that level saline or brackish water occurs.
The amount of fresh water is decreasing due to extraction.
| IV.RECOMMENDATION FOR AUGMENTATION
OF GROUNDWATER |
The intake capacity of recharge structures will be low
in shallow water table condition. Hence in Tikri Kalan where the ground
water level is below 10m rainwater harvesting can be taken up. The
study of the water level map shows that in some places the water level
has gone to 15 to 20m bgl. In these place recharge borewell depth
can be restricted to a depth of 10 or 12m. So when the water travels
in this soil media then natural filtration will take place, before
the water reaches the main aquifer.
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