Author : J. V. Hodgkinson F. C. A. Chartered
Accountant UPDATES :
November 2008. This website is maintained as it was in April 2008. Currently the
Dam levels are around 40% and, with the addition of the Grid, should be
maintained around that percentage. The next "uncommon meteorological event" will fill
the Dams to overflow. This event will show that that the actions of "uncommon events",
being Monsoons, Cyclones or Large Rainfall Depressions that generally cover all
of SEQ, is
again misunderstood and that they are the major source of our water supply. Our
current storage capacity is insufficient to deal with them. The historical
fundamental flaw of
the cancellation of the Wolfdene Dam (1989) is being repeated in reverse at
Traveston Crossing in the Mary Valley. See "Home" page for further
updates. |
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They have separate catchments but as we will see the Somerset is the dominant partner.
Because it is separate, it is excluded from these observations. The Dam levels quoted contain all three Dams. The North Pine Dam however mirrored the Somerset Dam. It is also much smaller than the Wivenhoe and Somerset and therefore has little influence on all calculations in this web-site. The statistics compared to the total of the three Dams are : Capacity 12.2 % : Yield 10.9 % : Catchment area 4.7 %. Annual Rainfall is listed by SEQWater as : Wivenhoe 940mm : Somerset 1230mm : North Pine 1175mm. |