Hōteo River
Image: Biospatial | ©

Introduction

Our work is focussed on restoring biodiversity in the Hōteo catchment, which runs east to west across northern North Island.

About the river

The Hōteo River begins close to Te Arai Point on the east coast and travels southwest for 28 km to enter Kaipara Harbour near its centre. It is the biggest river in the region.

The river meanders through farmed hill country with areas of exotic forest. Only small areas of native forest and wetland remain in protected areas and reserves. These areas represent threatened environments that have been lost from most of the catchment. Near the coast, the river becomes salty and its last 3 km are lined with mangroves.

High terraces beside the river are formed from unstable silt and sand, which are prone to erosion during floods. Sand, silt and clay on the riverbed and floodplain also contribute to sediment that is washed downstream. The Hōteo River is the third largest contributor to the problematic sediment entering Kaipara Harbour.

Kaipara Harbour is New Zealand’s largest estuary, with a shoreline of 3,500 km and an area of nearly 950 square kilometres. It is the country’s largest snapper nursery area, contains areas of seagrass and is important bird habitat.

Blog post about the Hōteo River.

See a map of the Hōteo River catchment (JPG, 1,280K)

Treaty partner

Iwi and community treasure the Hōteo River and have strong connections to it. Three iwi hold mana whenua in the catchment – Ngāti Whātua o Kaipara, Ngāti Manuhiri and Te Uri O Hau.

Current Ngā Awa restoration work

River restoration through Ngā Awa involves joining with agencies and groups already working in the catchment including tangata whenua, local government, private landowners and community groups.

Our focus is to contribute to efforts to identify and protect the remnants of native ecosystems in the catchment. In the long term, these remnants could help to restore the biodiversity in larger areas.

Elevated water temperatures, phosphorus, sediment and turbidity are long-term issues that degrade  water quality. Finding and planning ways to address these issues is part of the restoration work.

Hōteo catchment restoration work

Ngā Awa river restoration work is contributing to the restoration of the Hōteo catchment as well as the large-scale restoration of Kaipara Harbour. The catchment is a priority rural catchment in Auckland Council’s Sustainable Catchment Programme and a Ministry for the Environment at-risk catchment.

The Integrated Kaipara Harbour Management Group

Formed in 2005, this group brings together representatives from government agencies, regional council and the community to work towards a healthy and productive Kaipara Harbour.

Integrated Kaipara Harbour Management Group website.

Kaipara Moana

The Kaipara Moana Remediation Programme is a decade-long project that aims to remediate the degradation of the Kaipara Moana. The programme is an equal partnership between the Government, councils and Kaipara Uri. 

As part of Jobs for Nature, the Government has committed $100 million towards the remediation of Kaipara Moana, with a matching contribution from local councils and landowners.

Forest Bridge Trust

The goal of the Forest Bridge Trust is to create a forest bridge from Kaipara Harbour to Omaha Estuary where native wildlife can flourish. This requires fencing of existing bush and wetland remnants, weed and pest management, and replanting. The trust works to create areas of protected biodiversity with the support of landowners and communities as well as offering help for fencing to individual landowners.

Hōteo Sediment Reduction Project

This work is led by Auckland Council. The project steering group includes representatives from the community as well as Ngāti Mahuhiri, the Integrated Kaipara Harbour Management Group, Ngā Maunga Whakahii, Te Uri O Hau, Manaaki Whenua, Beef + Lamb and the Sustainable Business Network.

The project focuses on reducing sediment runoff in the Kourawhero Stream, a tributary of the Hōteo River. Nearly 12 km of waterways have been fenced and more than 25,000 plants have been planted beside the stream, some during community planting days.

Whitebait Connection

The Whitebait Connection has been working with Auckland Council since 2015 to find and improve habitat beside the lower reaches of Hōteo River where inanga spawn. They are working with local landowners and the Forest Bridge Trust to fence these sites.  

Other projects

Landowners and many other organisations are involved in restoration projects in the catchment. These include Beef and Lamb NZ, Fonterra, Wai Care, Dairy NZ, forestry groups, lifestyle block owners, Auckland Council, Million Metres and Millbrook Quarry.

Native fish species present

Many species of native fish have been recorded in the Hōteo catchment. Giant bully, torrent fish, inanga and longfin eel have a threat status of At-Risk – Declining.

Shortfin eel, kōura, common bully, Crans bully, banded kōkopu, redfin bully and yelloweye mullet are also present.

Contact

If you have any questions or want to get involved, email us.

Email: freshwaterrestoration@doc.govt.nz

Nga awa river restoration

About Ngā Awa river restoration

Ngā Awa is a programme working collaboratively in priority catchments to restore freshwater biodiversity.  

Learn more about Ngā Awa's work.

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