The record-breaking deluge is forecast to continue in the next couple of days.
Kulasegaram Sanchayan reports in Tamil with a feature written by Greg Dyett.
Listen to SBS Tamil at 8pm on Mondays, Wednesdays, Fridays and Sundays on SBS Radio 2.
Debris carried by floodwater in the swollen Hawkesbury river is seen inundating the partially submerged Windsor Bridge, at Windsor, north west of Sydney. Source: AAP