1. Sprinkler irrigation system has been made mandatory for the first time in Rajasthan in the Narmada Canal Project.

2. Narmada Canal Project is between Gujarat, Rajasthan, Maharashtra, Madhya Pradesh.

3. This project is also known as Bhagirathi of Marwar.

4. It is completely based on sprinkler irrigation method.

5. The districts of Rajasthan benefited from Narmada Canal Project are Jalore-Barmer.

6. The total length of Narmada Canal Project is 532 km.

7. Rajasthan's total share in Narmada Canal Project is 0.50 M.A.F.

8. Sardar Sarovar Dam is used for the Narmada Canal Project.

9. The total length of the Narmada Canal Project is 532 km of which 458 km is in Gujarat and 74 km in Rajasthan.

Khadin-It is a temporary pond made of earth, it is built under some sloping land. There is an earthen wall (Dhora) on both sides and a strong wall made of stone on the third side. When there is excess water, the pond gets filled and the water flows into the next pond. After the water in Khadin dries up, agriculture is done in it.

2. Pond- In Rajasthan, rain water is often collected in ponds. There are separate bathing ghats for men and women here. There is a well at the bottom of the pond, which is called Beri. This ancient method of water harvesting still holds its importance. This increases the ground water level.

4. Stepwell-Stepwells have their own place in Rajasthan. This is an ancient method of storing water. It is deep and has stairs and platforms to descend and is rich in artefacts.

5. Tanka: Tanka is an underground reservoir built to store rain water. The tanka usually has a square or rectangular shape and is constructed from clay or stone. A wall is built around the tanka so that rain water can collect in it.

1. The first biological park of Rajasthan is 'Sajjangarh Biological Park' located in Udaipur district, which was inaugurated on 12 April 2015 by the then Environment Minister Prakash Javedkar.

2. It is situated at the foothills of Sajjangarh Monsoon Palace, 8 kilometres away from Udaipur city. Mainly tigers, panthers, lions, reptiles, nilgai, sambar, wild boar and honeys are found in this park.

3. 5 Biological Parks of Rajasthan which include Sajjangarh Biological Park (Udaipur), Machia Biological Park (Jodhpur), Nahargarh Biological Park (Jaipur), Abheda Biological Park (Kota), Marudhara Biological Park (Bikaner) etc.

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.