Water from the heavy rain event on Saturday 20 March would have peaked at a level 4 metres below the future Powerhouse Parramatta ground floor.
In fact, water would have only just entered the Museum’s undercroft space, an area underneath the Museum’s ground floor not used by the public that is built into the design to allow the passage of flood water.
Powerhouse Parramatta will be a very safe building for people to visit and for the Collection to be exhibited.
The Museum has been designed to withstand large and rare flood events.
The below graph has been prepared by international engineering and flooding specialists Arup based on available flood data on Sunday 21 March 2021.