Return period (recurrence interval)
Average interval between events of a given magnitude (e.g., ‘1-in-100 year’); not a schedule.
Example Usage
"Design checks were run for the 1-in-200 year return period plus climate uplift."
Typical Units & Data
Years
Related Keywords
Related Terms
Flood hazard
The likelihood and physical characteristics of flooding at a location (extent, depth, velocity), without considering impacts..
Risk, Governance & ResilienceFlood risk
Flood hazard combined with the potential for harm to people, assets, operations or the environment..
Risk, Governance & ResilienceExposure
People, assets or services located in areas that could be flooded..
Risk, Governance & ResilienceVulnerability
How susceptible exposed receptors are to damage at a given flood intensity (depth/velocity/duration)..
Risk, Governance & ResilienceConsequence (impact)
The resulting effects if flooding occurs (safety, financial loss, service disruption, environmental harm)..
Risk, Governance & ResilienceFlood Risk Assessment (FRA)
A structured assessment of flood sources, pathways and impacts for a site/development, with mitigation measures..
FloodWatch Resources
Put This Knowledge to Work
FloodWatch monitors flood risk across your entire portfolio using official EA, NRW, and SEPA data.