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

In addition to this we carry out maintenance activities on sections of many other rivers and streams under a watercourses agreement with local authorities. 

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

Carterton lies on the historical floodplain of the Mangatarere Stream and there is a recognised flood hazard to Carterton if the stream should break out of its channel during heavy…

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

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 Culvert to the Pinehaven Reserve…

Updated November 10, 2021 at 6:11 PM

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