Introduction

Australian Rainfall and Runoff (ARR) is a national guideline document for the estimation of flood flows in Australia. It is produced by Engineers Australia. The current 1987/1999 Edition is now being revised. The revision process includes 21 research projects, which have been designed to fill knowledge gaps, that have arisen since 1987.

Parallel to the research projects is the updating of the document. The research projects will allow industry to comment on the technical direction before the new edition of ARR is released.  

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