The sites were traced by officials of the temple and members of the Vivekanandha Kendra, they said.
One of the sites 'Samhara Sankara Theertham' was on a road and the other 'Papanaasa theertham' had been traced at Kalanjiyam near Mandapam, they said.
Researcher Saraswathi said work on digging out the tank and cleaning the surrounding areas and renovating the side walls was taking place.