River Flow System: A particular system of water flow created by a river or its tributaries, governed by topography of the land and geological structure, is known as a river system or water system. River Drainage System of Rajasthan
River drainage system (Apvaah Tantra) of Rajasthan is divided into three categories:
(i) Bay of Bengal Drainage System: Rivers like the Banas, the Kalisindh, the Parvati etc. flow on the eastern part of the Aravali mountain range and drain into the Yamuna river. Later on the Yamuna river drains into the bay of Bengal. So these rivers form the drainage system of the Bay of Bengal.
(ii) Arabian Sea Drainage System: Rivers like the Mahi, the Luni, the Sabarmati, the West Banas and their tributaries, which flow on the western side of the Aravalli mountain range and drain into Arabian Sea form Arabian Sea drainage System.
(iii) Inland Drainage System: A River, which does not pour into the sea, and gets extinct on plains or drains into a lake, is known as an inland or underground drainage system. The Ghaggar, the Banganga, the Kantali, the Sabi, the Ruparel and the Mendha rivers form inland river drainage system in Rajasthan.