High Quality Content by WIKIPEDIA articles! Ramgarh Lake is an artificial lake situated near Jaipur city in Rajasthan state in India. It lies 32 km from Jaipur and covers an area of 15.5 sq. km. The lake is the main source of water supply to Jaipur city. It is a popular picnic spot specially after rainy season. There are ruins of an old fort and temple of Jambwa Mata.