This manual prescribes a set of sampling and analysis protocols applicable to most of the common stream habitats in New Zealand.

A high proportion of New Zealand’s native freshwater fish fauna need to migrate to and from the sea.

A summary of up-coming tropical cyclone seasons, issued 6-monthly.

Station height is in metres above mean sea level. Years of data are the number of complete years of data for the 1981 – 2010 period.

Mountainous areas are subject to heavy snowfalls, high winds, and low temperatures. Semi-permanent snow and ice fields exist at about 1000-1100 metres during winter.

Once in freshwater, glass eels develop into darker pigmented juvenile eels known as elvers.

A carbon neutral activity is one that has a carbon footprint of zero.

A participatory project empowering communities with self-help tools to improve water, sanitation and hygiene.

Tuna or freshwater eels are a very significant, widely-valued, heavily-exploited, culturally iconic mahinga kai resource.

What are the potential sources of chemical contamination from agricultural activities?

In comparison with regions exposed to the west, Gisborne experiences a greater number of weather and climatic extremes.

Water clarity or turbidity is the cloudiness or haziness in a fluid caused by individual small particles (suspended solids).