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In
the Patparganj the first sand formation exists upto a depth of 20m
below ground level (bgl), which is followed by impermeable layer of
clay and kankar and silt which extents from depth of 20 to 28m bgl,
which is followed by layer of kankar which extents upto 40m and below.
A
comparative study of water level map of 1960 and 2002 shows in Patparganj
the water level which was at 0 to 2m below ground level has gone down
to 5 to 10 mts bgl.
In
Patparganj the occurrence of fresh water in alluvium formation is
upto a depth of 30m to 60m. 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
area falls in the flood plain of Yamuna, so the intake capacity of
recharge structures will be low in shallow water table condition.
Hence in Patparganj where the ground water level is below 10m rainwater
harvesting can be taken up.
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