I think it is going to be worse than record 1974 flood - more people will be affected, because there are more houses and businesses have been built in the last 30 years, including many in the low level areas - like this industrial area in south-west Brisbane.
People trying to save equipment from flooded buildings.
The small gully (creek) is 500 meters away from this place. (geotagged)
Note to my friends: do not worry about me, I am in relatively high ground in Brisbane