On 20 March, a tornado damaged homes and toppled trees in Chester Hill, a western suburb of Sydney, leaving thousands without electricity.[25] Heavy rain flooded the site of Parramatta Powerhouse and as well as the Parramatta ferry wharf, which was overflowed after Parramatta River broke its banks.[26] The Warragamba Dam began to spill, which was the first significant overflow of the reservoir since 1990.[27] Because of rising floodwaters, which were not seen since the November 1961 floods, Nepean River and Hawkesbury River were overflowed, peaking at 10 m (32.81 ft), with Windsor Bridge becoming submerged, leading to inundated homes and isolated animals.[4]