Main pool

Normal pool level

Storm water storage volume

Maximum water level

Native wetland plantsRiser prevents overflowing embankment

Compacted earth embankment

Forebay

Embankment with wetland plants and spillway to main pool

Inlet

Riprap inlet protection

Riprap outlet protectionReverse-sloped orfice to slowly release storm water

Anti-seep collarsConcrete anti-flotation anchor

River

Outlet

Weiti JunctionIntegrating Storm water managementwith public space

Public green space

Boardwalk/Wetland

Riverside

Urban Zone

Helena Downey Studio 6225 - Project 31315637

A

Section AAA

Cordyline australis (cabbage tree)Eleocharis acuta (sharp spike sedge)

Baumea articulata (jointed twig rush)

Apodasmia similis (oioi)

Carex geminata (purei)Carex lessoniana (rautahi)Coprosma tenuicaulis (swamp coprosma)

Phormium tenax (flax)Sophora chathamica (kowhai)Ulmus procera lutescens (golden elm)

Avicennia marina (mangrove)

Detention pond/wetland system

A boardwalk provides clearly defined public access and allows good viewpoints for observing wildlife in the adjacent storm water wetlands and ponds

Quercus robur (english oak)

Green spaceHigh density

Medium densityWeiti River

Red oak boardwalk

Constraints Opportunities

Br o

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f ie

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Using Weiti River to influence connection between zones. A perfect opportunity for integration

Poplus nigra (poplar)