WaterNSW said on March 21 that torrential rain was “generating a major spill” at the Warragamba Dam west of Sydney.
Thousands of people in western Sydney have been asked to evacuate in what New South Wales Premier Gladys Berejiklian has described as a “one-in-50-year” weather event.
The Warragamba Dam spillway was releasing water at a rate of 450 gigalitres (GL) per day on March 21, a rate that could increase as inflows rise, WaterNSW said. The company noted that, by comparison, “Sydney Harbour is estimated to hold 500 GL”. Credit: WaterNSW via Storyful