The correct order of drainage basins from north to south is

Sabi - Banganga - Bedach - Mon

1. The Sabi river originates near the Dhara Ji temple of Ajitgarh in the Sikar district of Rajasthan. This river originated from Rajasthan, Haryana and then fell into Yamuna from Najafgarh in Delhi.

2. Banganga begins in the hills near Bairath in Jaipur district.

3. The Bedach River originates from the Gogunda hills of Rajasthan. Initially, this river was called the Ayad River. The total length of this river is 190 km. Is.

4. It originates near Amarkantak in Anuppur district of Madhya Pradesh, which is located east of the source of Narmada River in the Vindhyachal Hills.

The 50 cm parallel rainfall line parallel to the Aravali divides Rajasthan into two parts.

1. The eastern boundary of the western sandy plain is determined by the 50 cm isobar line. This line divides Rajasthan into two parts: the western sandy plains and the eastern plains.

2. The amount of rainfall in the western sandy plain is less than 50 cm. This area is part of the Thar Desert. The amount of rainfall in the eastern plains is more than 50 cm. This region is situated to the east of the Aravalli mountain range.