On January 12, 2011, the flood waters at Goodna peaked at 16.4 metres above sea level or AHD (Australian Height Datum - the benchmark level surveyors use to measure height).

The pillar at Goodna depicts the flood levels (from lowest to highest) in 1898, 2011, 1890, 1974 and 1893 when the suburb had two floods in the one year.

Heights are indicated by different coloured sections representing each major flood level and will be lit at night.