The Ukai Dam, constructed across the Tapti River, is the second largest reservoir in Gujarat after the Sardar Sarovar.

Constructed in 1972, the dam is meant for irrigation, power generation and flood control.

Having a catchment area of about 62,225 km2 and a water spread of about 52,000 hectares, its capacity is almost the same as that of the Bhakra Nangal Dam.

[1] Vajpur fort, built by the Gaekwad dynasty of Baroda, was submerged in the reservoir.

Commissioning dates of units 1 to 4 are: 8 July 1974, 13 December 1974, 22 April 1975 and 4 March 1976.