River Banas originates in the Khamnor hills of the Aravali range (about 5 km from Kumbhalgarh) and flows along its entire length through Rajasthan. Banas isa major tributary of the River Chambal, the two rivers meeting near village Rameshwar in Khandar Block in Sawai Madhopur District. The total length of theriver is about 512 km.