The first post office was down on the river flats at a place called Widget. Then the roiling brown floodwaters flowed through the main street. The mail couldn’t get through. There was no point ‘digging in’, especially in the face of a natural paddock top-dressing.
The railway line remained high and dry throughout. It was critical infrastructure.
The second post office was purpose built by the company town’s engineer. Being opposite the main watering hole made sense. When the village was relocated from the flat, they celebrated with beer. The townspeople liked their water brown and frothy, just not underfoot.