Relatives took the strenuous effort to trudge Kumari on a thooli -- a palanquin made with bamboo sticks and cloth -- for nearly six kilometres to reach the main road on Monday, where they found help.
The wall was fortifying a bungalow belonging to an affluent textile showroom owner who is a caste Hindu.
He added that such a disaster could have been averted had the officials not shown negligence towards the requests of Nadur villagers seeking removal of the wall.
According to sources, Sivasubramanian, who went absconding after the incident, called the police after the department picked up his two sons on Monday.
Palaniswami said new houses will be constructed for those who had lost their homes and government job provided to one person in the family of each of the deceased based on qualification.
Despite his grief, Selvaraj, who works at a tea shop in Jadayampalayam Pudur, made a different decision and decided to donate his children's eyes.
The situation was even worse in Arumbavur village where over 45 houses, government hospitals, primary health sub-centre, a government school in Thalaiyur panchayat union were flooded.
While the officials claim that Mettupalayam received 8.5 cm rains in the last 24 hours, until 7 am on Monday, the weatherman disagrees and claims that the number is double, at 18 cm.
Residents of the worst affected southern areas left their homes after sewage mixed with rainwater entered their houses.
The deceased B Saran, 21, of Periya Street, Chitteri, was going towards the Arakkonam railway station in the morning.
CM Palaniswami asked officials to ensure preparedness by holding adequate stocks of medicines, food, diesel generators and disinfectants.
Fishermen have been warned to not venture into areas in close proximity to Mannar, Kumarian, Maldives, and Lakshadweep.
Pallavaram, Chromepet, Kundrathur, Chitlapakkam, Medavakkam, Madambakkam and Tambaram among other areas in the suburbs were the worst affected by Sunday's rain.
Rescue operation by the police and fire rescue services are underway as more people are feared to be trapped under the debris.
RB Udhayakumar said the Tamil Nadu government had already identified 4,399 flood-prone areas across the State.