Rainwater Calculator
To help you make the right decision on what size Tankmasta® tank your going to need we have developed the 'Roof Catchment Calculator'.
Many calculators are based on average rainfall over the period of 12 months, however this method is reasonably irrelevant when considering we do
not catch and keep an entire years rain collection at any one time.
For information on the rainfall in your area visit the
Australian Bureau of Meteorology.