City Manager, Ravu Frank and the NCDC engineers, made a quick catchment analysis for the possible causes of the flood and several reasons was found to be the cause of the flooding. The meeting also included the consultancy of a Papua New Guinean hydrology expert based in Brisbane, he advised that the downpour occurred over two hours in high intensity, therefore the impact was massive and unprecedented. He stated that there was no well-designed drainage system that would have stood that volume of water, the pit openings could not capture the amount of surface flow that Port Moresby experienced, and there was too much flow.

https://www.looppng.com/png-news/ncdc-take-action-118989

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