We monitor the health of rivers, streams, lakes, estuaries and the coast through a variety of monitoring programmes

This information helps identify where further investigation is required, particularly where remediation of poor water quality or ecosystem health is desired. It also helps determine the effectiveness of our regional policies and plans. 

If you want to know about rainfall and water levels, scroll to the bottom of this page.

Groundwater in the Wellington region is used extensively for drinking water, stock supply, irrigation and industry. Groundwater also provides baseflow to rivers, streams and wetlands, or forms natural springs or…

Our river water quality and ecology monitoring programme provides information on the stream condition across the Wellington Region.

Continuous sediment monitoring sites were set up in the lower reaches of the three main tributaries of Te Awarua-o-Porirua Harbour (Porirua Harbour) in 2012/13. The purpose was to quantify the…

Te Awarua-o-Porirua (Porirua Harbour) is located 21 km north of Wellington City and comprises two arms; Onepoto, which flows south to the shoreline of Porirua City and Pāuatahanui, which stretches…

Te Whanganui-a-Tara/Wellington Harbour is a nationally significant harbour and port environment valued for the range of ecosystem goods and services it provides. Like other coastal environments surrounded by urban areas,…

Wetlands are defined as “permanently or intermittently wet areas, shallow water, and land water margins that support a natural ecosystem of plants and animals that are adapted to wet conditions”…

Regional and city councils monitor recreational water quality to identify risks to public health from disease-causing organisms and toxic algae. People can then make informed decisions about where, when, and…

GWRC operates an extensive network for measuring things including rainfall, river levels and flow, and bore levels.

This type of data is really important for detecting trends in

  • Detecting trends in climate and water resources
  • Enabling informed decisions on water allocation and use
  • Providing flood warnings and alerts
  • Monitoring drought conditions
  • Informing policy and planning
Updated November 1, 2023 at 3:41 PM

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