Need advice on installing a motor in borewell in Warangal, Andhra Pradesh

We have drilled a borewell in Warangal District, Andhra  Pradesh (November 2nd,2009) and are planning to install a motor. Installation of the motor is planned for after 2 to 3 months.

Details of borewell:

Depth of borewell 185 Feet, with 6 inch dia. Casing done up to 60 feet. Water was struck from 80 feet with approximately 2 inches of water.

I heared that if we are not installing the motor immediately then the borewell will get dry. Is this true ? If so, could you please clarify as to the reasons for the same?