What can you see here, in the isotopic composition of the precipitation, of monthly collected rainwater samples in the Hyderabad station, to get in connection with the ground water samples and the analyses of the ground water samples.
These are all precipitation samples, including these here, lying on the typical local meteoric line for Hyderabad, and here we see the samples from the surface and from the ground water, and it is obvious that the water in the surface run off both and reached by evaporation effect and on the line here all the other ground waters are lying.
The local meteoric water line has a slope of about 8 and a Deuterium excess of again about 8.