The Policy & Practice of Climate Change & Water

Australian Rainfall and Runoff – The Interim Climate Change Guideline

This report provides a new approach to reduce key uncertainties for decision makers in Australia. The Interim Guideline for Climate Change for the Australian Rainfall and Runoff (ARR) draws on the most recent climate science and new climate change projections to better inform decision making regarding the region's infrastructure. The approach incorporates numerous factors related to infrastructure and climate change in order to make better plans for new assets and mitigate potential damage to existing ones.

The Interim Climate Change Guideline report by Bates et al. (2015) is intended to be applied to the key system design event. It is most applicable to rainfall intensities and does not address other mechanisms that affect the magnitude of flooding. The Interim Guideline provides a six-step process for incorporating climate change risks into decisions involving the estimation of design flood characteristics. More details on the process and each step in this decision tree approach can be found in the full report (available online).
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