All A C D E F H L M P R S T V W X
Term Definition
Average Recurrence Interval (ARI)

The long-term average number of years between the occurrence of a flood as big as or larger than the selected event. For example, floods with a discharge as great as or greater than the 20 year ARI flood event will occur on average once every 20 years. ARI is another way of expressing the likelihood of occurrence of a flood event.

Project Contributors

Murrumbidgee Council      
NSW Government         

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