Newspaper article Sunshine Coast Daily (Maroochydore, Australia)

Drainage System Did as Planned

Newspaper article Sunshine Coast Daily (Maroochydore, Australia)

Drainage System Did as Planned

Article excerpt

FLOODING of beachside areas may have caused chaos but the drainage system performed as it was designed and is unlikely to ever be improved.

Council infrastructure chief Andrew Ryan said areas like Cotton Tree were so low lying that there was little more that could be expected from stormwater pipes.

With extreme weather events likely to be more intense and frequent, Mr Ryan said significant policy decisions needed to be made.

The heaviest rain fall was recorded between 4pm and 8pm in the run-up to a 1.7 metre high tide. The amount of water quickly overwhelmed drainage systems designed to cater for less than 10% of the 385 mm that was recorded over 12 hours.

When drains reach capacity water then pours on to roadways that are designed to be flood carriageways and ultimately spills to the edge of property boundaries.

Mr Ryan said the intensity of the rainfall was caused by a low pressure system that sat off Maroochydore for about five hours.

The event was similar to that which hit Pomona three weeks ago. …

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