Greater Wellington — Rivers and Streams

Greater Wellington manages the development and implementation of Floodplain Management Plans and Flood Protection Schemes for a number of the regions rivers and streams.

Following Budget 2024, Greater Wellington and MBIE’s Regional Economic Development and Investment Unit, Kānoa, have agreed to co-fund 16 flood resilience projects as part of a nationwide initiative. The programme spans 16 sites across Wairarapa and Ōtaki and are critical in future proofing community, infrastructure, cultural taonga and the economy, following a major flooding event. Find out more.

In addition to this we regularly carry out maintenance activities on sections of many other rivers and streams under a watercourses agreement with local authorities. Learn more about the work that is happening in your region:

Hutt Valley

Te Awa Kairangi / Hutt River

The Hutt River is a steep alluvial river that starts from the Tararua Ranges and enters Wellington Harbour at Petone.

Wainuiomata River

The Wainuiomata River catchment covers 133 square kilometres and a river length of about 22 kilometres. The location and shape of the Wainuiomata catchment make…

Waiwhetū Stream

A Floodplain Management Plan is currently being developed for the Waiwhetū Stream.

Mangaroa River

Greater Wellington Regional Council carried out a flood and erosion hazard assessment for the Mangaroa River in 2007.

Pinehaven Stream

The Pinehaven Stream is jointly administered by Greater Wellington Regional Council and Upper Hutt City Council. Greater Wellington manages the reach from the Whitemans Road…

Kāpiti

Ōtaki River

Mangaone Stream

The Mangaone Stream’s headwaters are in the Tararua Forest Park. The river flows in a westerly direction before discharging into the sea at Te Horo…

Waikanae River

The Waikanae River flows from the western foothills of the Tararua Ranges about 50 kilometres north of Wellington.

Waitohu Stream

Wairarapa

Upper Ruamāhanga River

The Ruamāhanga River system, from the Waiohine confluence upstream, has a total catchment area of 1560km².

Lower Ruamāhanga Valley

In the Lower Wairarapa Valley the dominant river is the Ruamāhanga. It travels from the northern central Tararua Range through open country across the eastern…

Donald’s and Abbots Creeks

Mangatārere Stream

Carterton lies on the historical floodplain of the Mangatārere Stream and there is a recognised flood hazard to Carterton if the stream should break out…

Waiōhine River

The Waiōhine River has a relatively long and narrow catchment area of 378 sq km on the eastern side of the Tararua Range.

Whakataki
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Rivers and Streams