buckingham canal drains water from south chennai. a 2014 cag report revealed that a diversion channel from buckingham canal near okkiyum maduvu to the sea (drain project under jnnurm scheme) could have saved south chennai from flooding. but the government dropped the 100 crore jnnurm scheme, which if completed, would have drained flood water at 3,500 cubic feet per second from southern neighborhoods. the 2014 cag report said defective planning of flood control projects caused delay and increased cost, defeating the objective of the scheme. "the fact is that alleviation of inundation of flood water in chennai city remains largely un-achieved," it said.