1 in 100 year flood extent

Polygon data delineating modelled statistical flood extent with an Average Recurrence Interval (ARI) of 100 years. For historical/actual flood extents, refer to 'Historic_extent' layer. Also known as the 1 in 100 year flood layer, it is used, amoung other things, in the creation of 'Land Subject to Innundation' areas as used in Planning Scheme Zones. The 1 in 100 year data is not restricted. This data is part of a group of layers depicting a range of statistical ARI extents. Current layers include 5, 10, 20, 30, 50, 100, 200, 500, 1000 year intervals, each in a seperate dataset. The layer called EXTENT_PMF represents areas of 'probable maximum flood' and is also part of this group. The data is statistically derived using hydrological models, historic flood extents and heights.

Data and Resources

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    1 in 100 year flood extent

Additional Info

Field Value
Published (Metadata Record) 01/08/2014
Last Updated 20/02/2020
Organisation Department of Environment, Land, Water & Planning
License Creative Commons Attribution 4.0 International
Data Temporal Coverage: 01/12/1997 to 31/12/2020