The Sabarmati river is one of the major west-flowing rivers in India. It originates in the Aravalli Range of the Udaipur District of Rajasthan and meets the Gulf of Khambhat of Arabian Sea after travelling in a south-westerly direction across Rajasthan and Gujarat. of the river length is in Rajasthan, while is in Gujarat. Course The Sabarmati River originates in the Aravalli hills in the Indian state of Rajasthan. The total length of the river is . After travelling in Rajasthan it flows into the Indian state of Gujarat where it is joined by a left bank tributary, Wakal, near the village Ghonpankhari. From there, the river continues southwest to Mhauri and meets a right bank tributary, the Sei River. Continuing its journey, it is joined by a left bank tributary, the Harnav River, before entering the Dharoi reservoir. After the Sabarmati passes the Dharoi dam it meets another left bank tributary, the Hathmati River. From there, the river flows past the city of Ahmedabad and is joined by a left bank tributary, the Watrak River. The Sabarmati River continues to flow and drains into the Gulf of Khambhat, in the Arabian Sea. Basin The catchment area of the Sabarmati basin is out of which lies in Rajasthan State and the remaining in Gujarat. The basin is located in a semi-arid zone with rainfall ranging from in different parts of the basin. The river traverses three geomorphic zones: rocky uplands, middle alluvial plains, and lower estuarine zone. The major tributaries are the Watrak, Wakal, Hathmati, Harnav, and Sei rivers. Average annual water availability in the Sabarmati basin is per capita, which is significantly lower than the national average of per capita. The Sabarmati is a seasonal river whose flows are dominated by the monsoon, with little or no flows post-monsoon. An average flow of per second was measured at Ahmedabad during the period 1968–1979. Over the past century, the flood of August 1973 is considered to be the largest flood, when a flow of per second was measured at Dharoi. Religious significance In Rajasthan, it is believed that the Sabarmati River originated due to the penance of ascetic Kashyapa on Mount Abu. His penance had pleased Shiva and in return, Shiva gave ascetic Kashyapa the Ganges River. The Ganges River flowed from Shiva's hair onto Mount Abu and became the Sabarmati River. In another legend surrounding the origin of the