We’re officially in Winter now and I reckon we moved definitively into the Dry season a fortnight ago, so it’s worth looking back at the Wet and seeing what’s likely to happen to our water supply in the Dry.
Wet season rainfall and the year to come
BoM climate data reveals that our rainfall so far this year, Jan – Feb – Mar – April – May, was 118 – 285 – 343 – 10 – 2 mm, for a total of 760 mm.
The Townsville region received quite a deluge between mid February and early March, after a dry start to what we hoped would be a good Wet. Green Path recently posted photos of the Town Common after rain, and here are some from Hervey’s Range to the West of the city.
I’m not going to claim credit for it, of course, but my post about rainwater tanks was followed almost immediately by the best rain Townsville has had for years, with totals like 250 to 600 mm over a week or so, depending on exactly where you looked. Ross Dam went from about 15% to over 80% – but I will say more about that in another post.
Easter seems to me to mark the usual turning point between Wet and Dry seasons here in Townsville, and it has certainly seemed so this year. Cyclone Debbie was looming as we left for Bali on March 25 but by the time we returned, a week ago, humidity had dropped right off, nights were noticeably cooler, the frangipanis were losing their leaves and the prospect of more real rain seemed to have evaporated.
A couple of days ago I said, “We’ve been promised rain every day for a week and seen very little – ‘scattered showers and storms’ is a fairly generous description,” Then it started raining, quite steadily.
A week ago I said, “If there’s a fixed open drain, [grey water on a rural property] might run into a banana patch, since bananas are always thirsty.” Now our bananas are standing in ankle-deep water, run-off from the higher side of our own block and from our neighbours.
People around the city are reporting falls of 30 – 120mm over the last few days as the patchy showers turned into widespread rain. Townsville’s official records only tell us what fell at the airport and are taken at 9.00 a.m. every day; the total to 9.00 this morning was 34 mm and I expect tomorrow’s reading to be much higher.