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Tongaporutu

The Tongaporutu Estuary is a long, shallow and short resident time tidal river estuary and is one of the few areas in Taranaki where indigenous forest adjoins the coastline. The estuary contains important breeding areas for native fish and the intertidal flats support a range of shellfish and other invertebrates. Tongaporutu Estuary and the adjacent wetland are included in the Council’s Key Native Ecosystem programme in recognition of the area’s high ecological value. It is also significant for Ngāti Tama with a number of pā sites along its riverbanks. The upstream catchment is dominated by mixed native forest (82%) as well as sheep and beef farmland (16%).

The estuary is vulnerable to the impacts of sedimentation due to the catchment being erosion prone and the high proportion of muddy sediments in the mid-upper reaches of the estuary.

 

Estuary summary

What makes my estuary unique?

Explore the characteristics of this estuary

Overview

Estuary characteristics

  • Significant features
    • Area of Outstanding Value in Proposed Coastal Plan for Taranaki
    • TRC Key Native Ecosystem
  • Total area
    58 hectares
  • Total shoreline length
    17 km
  • Key rivers
    • Tongaporutu River

Highlighted reports

These links are from your regional councils and unitary authorities and provide additional information about this estuary

Taranaki Estuarine Vulnerability Assessment

Related factsheets

For more details on particular topics see these factsheets

Understanding estuaries Estuary types

Department of Conservation

Want to connect with restoration groups or explore your local estuary? You can find more information on the DOC’s interactive maps.

Restoring estuaries map Experiencing estuaries map

What's happening upstream?

See results from monitored river quality sites influencing this estuary

River quality

What's happening upstream?

The physical characteristics and health of estuaries are influenced by the rivers and streams flowing into them. For instance, when it rains the mud and contaminants generated on land can be washed into rivers and eventually flow into the estuary. The health of our rivers and streams can therefore be very important for Estuary Health, and understanding the upstream pressures can help with interpreting estuary monitoring data.

Monitoring is undertaken for a range of river health indicators (e.g., water quality and ecology) in many catchments across the region. Where there are monitored river catchments that influence this estuary, these are shown below. You can click through to view monitoring results from these River Quality sites to see current state and how health has changed over time.

What surrounds my estuary?

See land cover information from monitored catchments that surround this estuary

Land cover

What surrounds my estuary?

The physical characteristics and health of estuaries are influenced by local geography and the way we use our land. This is because estuaries are the receiving environments for many of our land use activities. Land cover information can be used as an indicator of land use, therefore knowing the surrounding land cover can help us understand which pressures might be affecting Estuary Health.

Where there is land cover information available for nearby catchments, these are listed below. These figures show the types of vegetation and built or natural features that surround the estuary margins and the rivers that flow into this estuary. You can click through to the Land Cover topic to see these land cover classes broken down into further detail, and view changes over time.

Monitored sites 1

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