The Hussain Sagar Surplus, the channel through which excess water carries to the tank from the surroundings, further many channels connected to the surplus are mainly visible on the map. And, to the right side of the surplus channel situates many stepwells are also identifiable. Stepwells were developed mainly for the storage purpose especially in the arid regions like Deccan. It was easy for the people to get the access as well as manage the groundwater than with big well and tank.