Dhanbad is one of the water scarce cities in India. Depending on precipitation intensity, rainwater constitutes a potential source of drinking water. Rainwater harvesting is the technology where surface runoff is effectively collected and stored. Harvested rainwater canthen be used for drinking or for ground water recharge. Unless a proper water storage method is adopted, the rainwater harvesting may not be effective. This paper deals with a case study of rain water harvesting method adopted in Dhanbad city of Jharkhand state