Newspaper article The Chronicle (Toowoomba, Australia)

New Study Clears Quarry of Role in Grantham Flood

Newspaper article The Chronicle (Toowoomba, Australia)

New Study Clears Quarry of Role in Grantham Flood

Article excerpt

Byline: Emma McBryde APN Newsdesk

A NEW hydrology report into the 2011 Grantham flood that killed 12 people has cleared the local quarry of any overwhelmingly negative impact.

The lengthy, in-depth report commissioned by the current flood inquiry stated the most likely impact from the quarry was to delay flooding by one to three minutes.

The Water Solutions report attributed that to the time it took to fill the quarry pit with water.

Instead, the 2m-high railway embankment that runs through the town was found to have worsened the flood.

The report stated the embankment blocked the path of floodwater that would otherwise have moved unrestricted on to the Sandy Creek floodplain.

Blocking the water's path increased peak flood flow intensities through west and central Grantham, according to the engineer who compiled the report.

It was also found to have created a concentration of flood flow to the northern side of the embankment at the Sandy Creek rail bridge crossing. …

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