Generally emphasis has to be put on the importance of the alluvial aquifer for the following functions which affect groundwater quality and quantity. The storage function with respect to irrigation water and domestic water supply. It has a very good linking function between surface water and aquifers. It has also a distributional function between different water bodies in the aquifers. We found exchange by surface water to the alluvial and also to the weathered granite and also down to the fractured granite aquifers. The buffer function in the slow down of the monsoon rain water run off is very important. The sorption, ion-exchange as well as the filter function for the alluvial aquifer and for the adjacent and lower aquifers are also very important.

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