During a review meeting chaired by him, Rajkumar asked the officials to take steps to desilt the channels and drain water on a war-footing.
The corporation commissioner, Vijay Karthikeyan, who was also present, asked the officials to constitute flood relief committees.
Each zone should have a mobile unit, besides a 24-hour control room at zonal offices, as 19 locations were affected by rains, he said.
Meanwhile, about 200 sanitary workers, affiliated to CITU today staged a dharna near the corporation office, seeking increase in wages and 20 per cent Diwali bonus.
A committee, which has been formed to look into the issue, is expected to meet and take a decision soon, official sources said.