Porirua Harbour and Catchment Programme

Cover of Porirua Harbour and Catchment Strategy and Action Plan.

Porirua Harbour and Catchment Strategy and Action Plan


Wellington City Council is working with other parties on a programme of work to help restore the environmental health of Porirua Harbour and catchment.

Others involved in the project include Porirua City Council, Greater Wellington Regional Council, local iwi, Te Runanga O Toa Rangatira, and eight other local, regional and national agencies (including the Department of Conservation).

Project documents

The core document for this programme of work is the Porirua Harbour and Catchment Strategy and Action Plan. There's also a full detailed version of the plan. To access these documents, visit:

Strategy and Action Plan - Porirua City Council

Print copies are available at the Council’s Service Centre, Porirua City Council offices, Johnsonville and Tawa libraries.

Current problems

Action items in the plan address the ‘Big Three’ key issues facing Porirua Harbour:

  • excessive sedimentation rates
  • pollutants
  • ecological degradation

Porirua Harbour is currently exposed to a range of man-made impacts that are ruining the environment. Current urbanisation and transport networks are a constant challenge to the use and quality of the harbour waters. Planned and potential future development could speed up the damage.

About Porirua Harbour

Porirua Harbour has the largest estuary system in the lower North Island. As well as having a nationally significant wildlife area, the estuary has cultural, recreational, economic, and ecological value.

Porirua Harbour is made up of the Onepoto Arm, the Pauatahanui Inlet and the outer harbour. The harbour catchment includes Porirua Stream, with 70% of Porirua Stream catchment in the Wellington city district.

The five main streams that feed the Porirua Stream are Belmont, Takapu, Stebbing, Kenepuru and Mitchell’s streams. The first three of these are in Wellington City Council’s area as they start in urban Johnsonville and Newlands and pass through the relatively high-density urban areas of Tawa and Linden.

The Porirua Stream catchment covers an area of 5,522ha.

More information

Nicci Wood
Planning Engineer, Infrastructure

Phone: (04) 803 8081
Fax: (04) 801 3009
Email: nicci.wood@wcc.govt.nz