Man-made flooding of Brisbane

9 03 2011

ENTRIES in the “flood event log” for the devastating Brisbane River flood reveal that the senior engineers in charge knew by 7.10pm on Sunday, January 9, that high releases of water from Wivenhoe Dam would be needed ”in view of heavy rain over the last three hours”.

The entries also show that senior engineers proposed more than doubling the releases, from 1400 cubic metres a second (cumecs) to between 3000 and 3500 cumecs that Sunday night to give the dam more storage capacity to manage the flood and intensifying rainfall.

But it took until Tuesday, January 11, when the dam was almost full for SEQWater, which employs the engineers who operate Wivenhoe Dam, to start releasing more than 3000 cumecs.

By Tuesday evening, with the dam at risk, the releases were dramatically ratcheted up to 7500 cumecs – flooding thousands of Brisbane homes and leaving a damage bill of billions of dollars.

 

via Andrew Bolt

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