Road Floodway

A road floodway is a section of road designed to be overtopped by floodwater during relatively low average recurrence interval (ARI) floods.

Road floodways are typically accompanied by a depth indicator, so that the depth of flooding can be determined by motorists.


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Floodway signs should be erected to provide advance warning of floodways.


Related Pages

External Links & References

  1. Queensland Transport & Main Roads Road Drainage Manual (Chapter 10 - Floodway Design)
  2. Google Search
  3. Road Flooding Signage -Department of Transport and Main Roads (Queensland)
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