Restoration of Duck Creek as Part of Land Development

Stormwater Conference

“The Banks”, Whitby demonstrates how large scale land development can provide a positive impact on the surrounding environment through the integration of restoration works. The development of the historic Whitby Golf Course includes approximately 320 residential sections alongside Duck Creek in Porirua City's hill suburb of Whitby. Duck Creek is an important natural resource for the local area and it discharges into the nationally significant Pauatahanui Inlet arm of Porirua Harbour. A key component of the development design was the realignment and restoration of a section of the stream (Duck Creek) to become a core amenity of the area. A Comprehensive Development Plan (CDP) was completed for the work with significant consultation with Porirua City Council, Greater Wellington Regional Council, Department of Conservation, Iwi, Residents Associations and other special interest groups. The design integrated surveying, engineering, planning, ecology, landscaping and flood modelling to provide a solution that satisfied the CDP intentions.

The restoration plan for Duck Creek had three main objectives; increase in ecological value, flood management, and public amenity enhancement. The design provided a central spine linkage along the majority of Duck Creek and created a native riparian habitat and passive recreation facilities. Flood modelling was undertaken and the design was developed to control and manage flood waters in Duck Creek in a safe, efficient and sustainable manner including allowing for climate change. The restoration included two full diversions / realignments of Duck Creek, placement of erosion protection, bank stabilisation works, planting and earthworks to raise the floodplain and change the profile of the river. The successful restoration of the waterway and adjoining areas required the balancing of the three key objectives and has successfully provided a valuable resource that the whole community can be proud of.

Conference Papers Resource - Conference Papers Stormwater

2. Dion Mead & Laura Verry.pdf

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22 Jun 2016