Freshwater

What are the potential sources of sediments from land use activities?

A range of physical and chemical variables are measured in the NRWQN.

A habitat is an environment or place where animals normally live.

There are two species of kōura or freshwater crayfish in Aotearoa.

What are the potential sources of chemical contaminants in wastewaters?

Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it. This means that every time we act to protect and enhance streams and rivers we are also benefiting the estuary at the downstream end.

Here are some simple steps to minimise the effects of dairying on water quality and mahinga kai.

An estuary is a partially enclosed body of water formed where freshwater from the land meets and mixes with saltwater from the ocean.

Learn how to use the New Zealand Freshwater Fish Database (NZFFD)

Management of stream riparian areas - including vegetation and stock access - influences the health of streams and downstream water bodies.

How may agricultural activities impact riparian vegetation around a waterway?

El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand.