Smelt have a distinctly forked tail and a strong cucumber smell.

Damming water for urban use, hydro-electric power generation, irrigation, and other industrial and commercial uses.

View annual, seasonal and monthly summaries of temperature, rainfall and sunshine data from across New Zealand.

Understanding climate and climate change.

This weekly update helps assess likelihood of extremely dry weather preceding a drought.

Some simple steps to minimise the effects of wastewater on water quality and mahinga kai.

New Zealand rushes (Juncus): species-level factsheets.

Descriptions of the common terms that explain the processes that occur in hydrology.

What are the sources of chemical contamination from wood processing?

Raglan B Cam-era station

A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.