Ajwa, Water reservoir in Vadodara, India

Ajwa is a water reservoir in Vadodara with expansive water surfaces controlled by numerous gates that regulate water levels. The structure connects to the Vishwamitri river and plays a key role in managing the city's water supply.

Built in the early 20th century by Maharaja Sayajirao Gaekwad III, ruler of Vadodara, the earthen dam was designed to supply the city's water. Vadodara then held about 100,000 people, yet the reservoir was planned three times larger, enough for some 300,000 residents of the eastern districts. The engineer was Jagannath Sadashiva Hate, known as Shri Jagannath Sadashivji.

The gardens beside the reservoir, called Vrindavan Garden, copy the layout of Mysore's Vrindavan Gardens and were long known for coloured and musical fountains in the evening. From 2019 the garden became the ATAPI Resort. The reservoir itself is also known as Ajwa Nirmeta and Sayaji Sarovar.

The reservoir lies about 10 miles east of Vadodara, and private vehicles are the usual way to reach it. A water treatment plant stands near Nimeta village on the road from Ajwa to the city, with a garden around it. The Vrindavan Garden beside the dam became the ATAPI Resort in 2019.

The reservoir holds around 340 crocodiles, according to counts cited for the site. The gates are worked from a row of grey concrete counterweights marked with small black numbers and letters, each sitting on a low plinth below the arches of the orange-red wall; a metal railing and small blue signs run along the top.