How was the water conserved in ancient India? Give some examples in support of your answer.

The water was conserved in ancient India by constructing sophisticated hydraulic structures like dams built of stone rubble, reservoirs or lakes, embankments and canals for irrigation. Some of the hydraulic structures in ancient India were as follows:
(l) In the first century B.C., Sringaverapura near Allahabad, had sophisticated water harvesting system channelling the flood water of the river Ganga.
(ii) During the reign of Chandragupta Maurya, dams, lakes and irrigation systems were extensively built.
(iii) Irrigation works have been found in many places viz., Kalinga(Orissa), Nagarjunakonda (Andhra Pradesh), Bennur (Karnataka) and Kolhapur (Maharashtra).
(iv) In the 11th century, Bhopal Lake was built. It was one of the largest artificial lakes of its time.
(v) In the 14th century, the tank in Hauz Khas, Delhi was constructed. by ltutmish. It supplied water to Siri Fort area.