This is so typical.
I've organised the water carrier to deliver a load of water to us on Wednesday.
Just read the weather forecast and they are expecting rain on Thursday, around 20 - 40mm is expected which corresponds to between 3000 and 6000 litres in the tank.
Obviously the gods that follow new scopes around also keep an eye on water tankers as well.
Still any extra water is a bonus and with a 90,000 litre tank it takes a while to fill.
Cheers