The civilization inhabiting these areas drew its wealth from the life-giving river that irrigated the fields and provided water. Around the city of Dholavira, one of the largest centers of this civilization, the inhabitants built a system of over a dozen large water tanks, which distributed and at the same time cleaned the tidal water. Water was supplied to the municipal water supply, and residents could use it in their own homes. The tanks were over 7 meters long and about 7 meters deep each. A network of irrigation channels also irrigated the crops, resulting in high yields and prosperous life.
