References, further reading, and links to useful websites.

When soils erode, sediments are washed into waterways.

The Standardised Precipitation Index (SPI) is a simple measure of drought (and also of very wet conditions) and is based solely on the accumulated precipitation for a given time period.

NIWA has transformed 1.5 million square kilometres of data into the most accurate and detailed map yet of the land underneath the sea around New Zealand.

The climate of this area is greatly dependent on its exposure to weather systems from the Tasman Sea and the lie of the Southern Alps to the east.

Submerged plants have a number of advantages that favour their use as indicators of lake ecological condition.

Northland, with its northern location, low elevation and close proximity to the sea is characterised by a mild, humid, and rather windy climate.

Common questions about clouds, how they are formed and how they behave.

This web camera is available thanks to the support of Waikato Regional Council.

New Zealand has low-lying coastal areas that are vulnerable to inundation (flooding) by the sea.