Krishnarajasagara is situated about 18 Km from Srirangapatna, 16 Km from Mysore and 143 Km from Bangalore. It is a reservoir constructed across the river Cauvery. A dam at the length of 8600 ft. and height of 130 ft above the river bed was built below the confluence of the three rivers – Cauvery, Hemavathi and Lakshmanateertha in 1938. The place was formerly called as Kannambadi after the Kanveshvara temple in the village submerged in the reservoir. Earlier to this, it was known as Kanvapuri, where the sage Kanva is said to have had his ashram and worshipped Shiva.
The reservoir is named after Maharaja Krishnaraja Wodeyar IV, during whose rule Sir M. Visveswaraya, as Chief Engineer of Mysore, got the dam built. About 24 inscriptions are found here and one of them in Persian speaks of Tippu sultan’s efforts to build a dam at the site. A jatra is held in honour of the Goddess Kalamma, whose temple is found on the north bank of the dam.
The Brindavan Gardens here is the best illuminated terrace garden in India. There is a statue of Goddess Cauvery in the garden. There are varieties of fountains including the musical fountain. There are also a horticultural farm and nursery, fisheries pond and the Hydraulic Research Station here. The place is visited by lakhs of visitors annually. There are also two hotels facing the garden providing boarding and lodging facilities.