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I believe the dam is not to go above 75% full anymore after 2011...

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optionsjnr

918 Posts.

21/03/21

20:03

Post #: 51930476
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Originally posted by bbender ↑

Difficult to sort out the actual statistics for Wivenhoe ... when built it was stated that 50% of total capacity was for water storage and 50% was temporary holdings for flood mitigation, to prevent another flood event in Brisbane. This would seem to suggest that once the 50% level was reached the excess would be released in a controlled manner, yet somehow while operating "by the manual", the dam went within 600mm of being overtopped and only was saved by panic plug-pulling and subsequent downstream devastation. Reports from the eventual enquiry did not suggest whether the original manual was modified or nobody actually read it and in spite of the best government efforts some compensation has been won.
So... does the quoted 30% refer to 30% of the theoretical 50% maximum (=15% of overall capacity) or does it mean 30% of overall capacity, in which case another 20% will fill storage capacity?

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I believe the dam is not to go above 75% full anymore after 2011 floods.
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