Understanding Rainwater Tank Sizing
Australia is a vast country with varied climate regions. This means that rainfall patterns can differ greatly from region to region. If you're looking to install a water tank for rainwater harvesting purposes, you need to determine what size water tank you need for your home.
While you can always play it safe by buying the biggest and most practical tank for the available space, a more accurate way to determine the right size tank for your home is to figure out how much rain can be collected from your roof's surface beforehand.