Hedley Thomas and the Australian have been doing their best to convince the public that the Seqwater engineers were responsible for the Brisbane flood.
What then don't they report (as far as I can tell on the 'net) is this crucial bit of evidence yesterday by the independent hydrologist Mark Babister, we have to go to the Fairfax press to read about it. (Even then, it is not given much prominence):
In his report released last night, the hydrologist found that "although hindsight indicates a better flood mitigation result could have been obtained ... it would have been unjustifiably risky using the information available at the time".
"The primary factor when forming this view is that there would generally be no grounds to release large flows from Wivenhoe Dam during a flood event that are greater than the inflows so far received," the report says.
The strategies would have relied on operators releasing large flows from Wivenhoe in anticipation of drastic inflows.
"Between 11am on January 8 and 1pm on January 9, both of these strategies would have involved dam outflows significantly in excess [almost double] the peak dam inflow observed until that point," the report says.
"During this period, the above scenarios would have required Wivenhoe Dam to operate as a flood amplification dam rather than a flood mitigation dam.
"The only reason to increase flows so dramatically at such an early stage would have been if there was a sure indication that future inflows [would] exceed the remaining flood mitigation space in the dam, and that storage capacity should be 'created' for later."
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