The Sabarmati River is a river in western India and one of the biggest rivers of north Gujarat. River Sabarmati is one of the major West flowing river of Gujarat which originates from Dhebar lake in Aravalli Range of the Udaipur District of Rajasthan and meets the Gulf of Cambay of Arabian Sea after travelling 371 km. from the origin. The Sabarmati basin has a maximum length of 300 km. and maximum width of 105 km. The total catchment area of the basin is 21674 km2 out of which, 4124 km2 lies in Rajasthan State and the remaining 18550 km2 in Gujarat State.
Sabarmati River Basin is situated in the mid-southern part of Rajasthan. To its east lie the Banas and Mahi Basins, to its north the Luni Basin and to its west the West Banas Basin. Its southern boundary is the border with Gujarat State. The total catchment area of the Basin is 4,164 km2. Sabarmati River Basin extends over parts of Udaipur, Sirohi, Pali and Dungarpur Districts. Orographically, the western part of the Basin is marked by hilly terrain belonging to the Aravali chain. East of the hills lies a narrow alluvial plain with a gentle eastward slope.
Sabarmati river rises in the Aravali hills, which roughly mark the western boundary of Udaipur District, i.e. Mount Abu area, and flows in a south-westerly direction. The main tributaries of the Sabarmati river are Wakal river and the Sei Nadi, which also rise in the Aravali hill range west of Udaipur city and flow south-westwards in courses generally parallel to the Sabarmati river, up to their confluence with the river (in Gujarat).
Ahmedabad and Gandhinagar, the commercial and political capitals of Gujarat were established on the banks of Sabarmati river. The legend is that Sultan Ahmed Shah of Gujarat, resting on the bank of Sabarmati, got inspired with the courage of a rabbit to chase a bully dog to establish Ahmedabad in 1411. At the bank of Sabarmati river there is located rich area named "Sabarmati".
The area covering upper sub-basin and the catchment of the main river up to Dharoi dam is designated as Dharoi sub-basin. Constructed in 1978, Dharoi dam is located about 165 km upstream Ahmedabad in village Dharoi of Mehsana district. This covers drainage area of the main river up to Dharoi dam. Catchment area of the sub basin is 5540 km2, out of which about 2,640 km2 lies in Gujarat state.