(Image: Private Media)

Inspired by the Harper’s Index, Crikey takes a look at the numbers behind the devastating flooding in Queensland and New South Wales.

Mean annual rainfall in Brisbane: 1011.5mm

Rainfall recorded in the four days prior to 28 February 2022: 741mm 

Brisbane River CBD peak height during the 2022 floods: 3.85m

Brisbane River CBD peak height during the 2011 floods: 4.46m

Brisbane River CBD peak height during the 1974 floods: 5.5m

Lives lost in the 2022 Queensland floods to date: 12

Lives lost in the 2011 floods: 33

Lives lost in the 1974 floods: 13

Homes requiring rebuilding in 2011: 28,000

Estimated damage according to the Insurance Council of Australia in 2011: $2.38 billion.

Change in property prices in Brisbane in the year following the 2011 floods: -6.1%

Brisbane quarterly property price growth prior to the 2022 floods: 8.5% 

Current dam levels in the QLD network: 91.1%

Percentage change in QLD dam levels in the past seven days: -6.5%

QLD dams overflowing: 18 out of 25

QLD dams releasing water: 2 out of 25

Current dam levels in Greater Sydney network: 99.9%

Percentage change in Greater Sydney dam levels in the past seven days: 2.8%

NSW dams overflowing: 7 out of 18

Sign-ups to contribute to the clean-up efforts in QLD, aka “the mud army”: over 10,000

Calls to NSW SES for emergency assistance since the start of flooding: 16,219

Flood rescues completed by NSW SES since the start of flooding: 1761

NSW homes declared “unlivable” since the start of flooding: Over 2000