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Waiongana Stream

This catchment is representative of a northern Taranaki ring plain lowland stream, which has its source outside the National Park. It is the principal tributary of the lower Waiongana Stream. The Mangaoraka Stream drains mostly intensive agricultural land, with 91% of the catchment above the site in agriculture. The stream holds special value for Te Atiawa Iwi. It is a trout fishery of local importance and has very good access from the sea for native fish.


All water quality parameters have stabilised in recent seven-year trends, and ecological health is significantly improving in this catchment. Water quality is expected to improve in coming years as new riparian fencing and planting in the catchment becomes established.  

The Mangaoraka catchment has a total of 335 km of stream bank. 43% of the stream banks have riparian vegetation that is covered by a Taranaki Regional Council riparian management plan. 66% of stream banks are protected by riparian fencing. There are stretches of stream bank that are both fenced and planted.

82% of the stream banks are covered by riparian plans (June 2017). There are a number of smaller lifestyle blocks still to engage in the Council’s riparian programme.

Sites 3

Monitored sites in the Waiongana Stream catchment

...retrieving sites.

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