234. Rivers and Lakes of Rajasthan

Rajasthan's rivers are best read through relief. The Aravalli range runs roughly north-east to south-west and divides flow into three directions: the Chambal-Banas-Kali Sindh-Parbati side drains toward the Yamuna and Bay of Bengal, the Mahi-Sabarmati-Luni side drains toward the Arabian Sea, and several northern and desert streams end inside the inland basin. This is the practical meaning of Three Drainage Systems of Rajasthan. It also explains why a river map and a lake map must be read together: west of the divide, drainage weakens into salt pans and closed depressions; east and south of the divide, rivers cut deeper valleys and sustain multipurpose projects. Bay-of-Bengal drainage gives Rajasthan the Chambal River (Yamuna tributary), Banas River (longest river entirely in Rajasthan), Kali Sindh and Parbati (Chambal tributaries), Banganga, Gambhiri and Mej. Arabian-Sea drainage includes Luni River (Western Rajasthan), Mahi River and Sabarmati River (Rajasthan origin). Internal drainage includes Ghaggar River (paleo-Saraswati), Kantli, Sabi, Sota-Ruparel and desert basins that feed saline lakes. District clues matter. Udaipur and Rajsamand sit near many Aravalli origins, Kota-Bundi-Baran-Jhalawar are tied to Chambal-Hadoti, Banswara-Dungarpur are tied to Mahi, and Hanumangarh belongs to the Ghaggar-Hakra story. The same divide also explains rainfall response: Hadoti rivers can run in defined valleys after monsoon inflow, whereas western channels often spread into shallow beds, temporary ponds and salt-bearing flats. That is why drainage questions often combine a river with a district, a dam, a lake type and a final outfall. District pairing is essential. This framework prevents lake facts from floating separately: Sambhar Salt Lake is inland saline, Jaisamand is an artificial lake on the Mewar side, and Bisalpur Dam (Banas river, Tonk) sits on the east-flowing Banas.