Monday, November 14, 2011

Good rainfall to start November; la nina confirmed

We have had a good start to November, with 27 mm thus far, putting us on track for the average of around 60 mm. However, ACTEWAGL have been slow updating their dam level numbers and so I will have to estimate the inflow for the year thus far. My calculation put it around 44,000 megalitres, with probably a little more to come from last week's rain. However, we are having hot weather for November, which increases evaporation and transpiration, so there might not be much more to come. We will see.

La Nina has been confirmed as present in the Pacific, so above average rainfall is projected for the summer. If above average rainfall eventuates, it will be interesting to see the inflow figures. The heavy rainfall that we had from February 2010 and February 2011 did not bring us back to average inflow levels, but perhaps a few further months of good rain will go some way towards doing so.

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