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Lower Vellar, Cuddalore District, Tamil Nadu
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Aquifers Delineation
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Aquifers in the area can be found as:
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Unconfined Aquifer or Phreatic, 2 to 30m thick.
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Semi-confined Aquifer, occurring at a depth of 40 to 100 m.
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Confined Aquifer, including upper confined (100-140m bgl) and lower confined (below 140m bgl) aquifers.
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| A lignite bed, occurring around 100m depth, separates the semi-confined aquifer from the confined aquifer. |
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Schematic view of the aquifer systems in the area. |
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On the basis of borehole data, the following fence diagram of Cuddalore district and regional hydrogeological framework have been drawn by CGWB. |
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Figure 6.6: Fence diagram, Cuddalore District. |
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Figure 6.7: Regional hydrogeological framework. |
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