Water level configuration on July 1997 was assumed for the steady state condition. So a single groundwater velocity field was computed and the entire study-area covers about 22 kilometres by 8 kilometres and the first layer thickness is 10 to 15 meters and along Nakkavagu or a weathered zone and the granites. The fractured zone underlies the first layer and has a thickness of 10 to 15 meters. The two total thickness of this meter vertical section is maximum of about 30 meters.

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