The reservoir, Sahasralinga Talav, meaning “Lake of a thousand Lingas”, was built in 1084 just North of Rani Ki Vav, over a lake originally known as Durlabh Sarovar. the architecture represents the integration of careful water management with the sanctity of water. Of the 7-hectare spread of ruins only 20 percent has been unearthed, excavated in 1942-43, and though it was destroyed three times in attacks, its splendor is still evident. There is a finely carved three-ringed sluice gate that channeled water from the Saraswati River into the reservoir, and it is said that the lake had inbuilt natural filtration. The reservoir contains elaborate sculptures of deities and impressive columns that once supported a ceiling.