Flooding happens quite often in New Zealand, for several reasons:
Weather systems are constantly sweeping over the country’s narrow islands, bringing heavy rain.
The many mountain ranges cause moist air to condense and produce more rain. Parts of the West Coast, near the Southern Alps, have more than 10 metres of rain a year.
The country is criss-crossed by rivers and streams that come down from the mountains.
Clearing native forest means that heavy rain quickly flows into the rivers.
READ MORE: http://www.teara.govt.nz/en/floods
Floods are the most frequent and costly natural disasters in New Zealand – between 1920 and 1983, the country experienced 935 damaging floods.
READ MORE: http://www.teara.govt.nz/en/floods/page-1
