Design Rainfall Data System (2016)

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About the 2016 Design Rainfalls

The 2016 design rainfalls provided here are:

  • based on a more extensive database, with more than 30 years of additional rainfall data and data from extra rainfall stations;
  • more accurate estimates, combining contemporary statistical analysis and techniques with an expanded rainfall database; and
  • better estimates of the 2% and 1% annual exceedance probability design rainfalls than the interim 2013 IFDs.
  • extended to include the subdaily rare design rainfalls.

By combining contemporary statistical analyses and techniques with an expanded database, the new 2016 design rainfalls provide more accurate design rainfall estimates for Australia.


Note: The 2016 IFDs replace both the ARR87 IFDs and the interim 2013 IFDs.