Calculating HP or capacity of pump for borewell in Denkanikota, Tamilnadu

Can you guide me how to select capacity of Submersible Pump for my borewell. How does one calculate required HP of submersible pump required for a particular application, what all factors should be taken in to consideration? My borewell is 600 feet in depth, with 40 feet casing done. It is 6" dia borewell. Location near Denkanikota (Hosur/tamilnadu)

Ponnu Subramanian
ponswetha@gmail.com