Freshwater

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

How does urbanisation increase sediments in waterways?

Returning water to our waterways after we’ve used it in our homes, on farms and in industry is a complex and challenging process.

Once eels become migrants (also known as tuna heke or tuna whakaheke) they stop feeding, and progressively develop the external features that clearly distinguish them from 'feeders'.

Diverting water changes a waterways natural flow

A range of different mining techniques have been developed to obtain these valuable resources

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

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

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

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.