Bio-Filtration Garden Forebay Catch pit | Ōtāhuhu Town Centre Streetscape | Boffa Miskell

Improving the stormwater quality of Ōtāhuhu was one of the key goals of the Ōtāhuhu Town Centre upgrade project. A number of bio-filtration gardens have been installed along the newly-refurbished streets to promote a healthy environment. The project made a unique shift in effective gross pollutant pre-treatment and management using catch pits.

During the design phase, the client challenged the design team to develop an improved rain garden forebay design that would filter the bulk of floating rubbish and sediment out of the incoming water from the road before it entered the rain garden, thus reducing the maintenance requirements.

The design team explored various options and collaborated

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