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 it susceptible to southerly rainstorm events.

Recent flooding events across New Zealand have shown the need for investment in critical flood protection infrastructure. The effects of flooding can be devastating for communities, and cause millions of dollars of damage.

Updated June 1, 2023 at 3:09 PM

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