This map shows the maximum amount of rain that is likely to fall in any 24 hours over a 100 year period. The Canterbury Plains near Timaru are particularly dry. There, an average 1-in-100 year rainfall event would be 100–150 millimetres in 24 hours. By contrast, in the very rainy Hokitika catchment (dark blue) an average 1-in-100 year rainfall event would be 800 millimetres in 24 hours.
Using this item
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.