Greater Wellington Regional Council’s river water quality and ecology monitoring programme provides information on the stream condition across the Wellington Region. Water quality and ecosystem health are currently monitored at 45 river and stream sites. These sites were chosen to represent the major land uses and human activities, and also the natural diversity of rivers and streams, in the wider Wellington Region.

Monitoring network

Scroll/zoom on the map to find areas of interest. Click on a site to see more information.


Water Quality

River and stream water quality is assessed at monthly intervals by measuring a range of physicochemical and microbiological variables.


Ecological variables assessed as part of the programme include: