Author : J. V. Hodgkinson F. C. A. Chartered
Accountant : Aug 2006 to November 2013
The principal thrust of this
This is my review based on official
statistics and documents. It is done in conjunction with Ron McMah, grazier
of Imbil and Trevor Herse, retired of the Gold Coast
May 2009 : There is no change to this section since August 2007
They nominated three Rainfall Stations, two in the Wivenhoe and one in the Somerset.
They are correct. Attached is a summary of all the recording Stations in the Dams, some dating back to the 1880's. The Summer rains have without fail registered 50% or better in the 4 Summer months December to March. The balance, of course, was received in the non-summer months.
Almost all high impact rainfall that creates inflow was received in the Summer months. There are a few notable exceptions and attention is drawn to them where required.
The information is split into two sections. Rainfall up to 1964 and rainfall after that date. There is a slight variation between the two that do not alter the point of this exercise. I have referred to it in the "Climate Change" button.
Mary Valley ( Proposed Traveston Dam ) adjacent catchment area.
The consistency of the data as between rainfall Stations and periods has facilitated the comparisons in both Dams dating back several years to the early 1900's.
It had a major effect on determination of the cause of our depleted dams in the years 2001 to 2006.
The Summer Rains, with the exception of uncommon events, have produced almost all the inflows into the Dams. There are minor, but some important exceptions usually on the edge of the non-summer months namely April /October /November.
Summer Rainfall has been used throughout the web-site and the exceptions that occurred in the non-summer months noted where applicable.