Historical records show Inverell's maximum time spacing between floods four metres or higher always sat around 14 years or less.
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It has now been 28 years since the township experienced a flood of that depth, according to State Emergency Service (SES) statistics.
Deputy local controller flood intelligence David Jones said Inverell's last flood greater than four metres was 1991.
After recording the local flood forecasting since February 1976, he believes the stats tell an interesting story.
Inverell's average maximum temperatures from the 1870s to 2010s have been included on the above graph.
Sitting at around 22 degrees in the 1870s, the temperature later spiked in the 1900s, 1930s, 2000s and 2010s above 24 degrees.
"The low maximum temperatures in the 1890s followed the very cool summers encountered following the huge eruption of Krakotoa in 1883 which scientists determined affected the weather in the southern hemisphere for 10 or 15 years.
"The noise of the eruption was heard in Brisbane," he said.
The 2010s have been the highest maximum temperature recorded sitting extremely close to 24.5 degrees.