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Twenty Five Year Recurrence (FRI_4)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: fri_4.ttl
- Name
twentyYearRecurrence- Attribute
- FRI Flood Recurrence Interval
- Definition
- The probability of a flood occurring in any given year is 1 in 20.
- Description
- The percent chance of a flood occurring in any given year is 5%.
- Accepted
- 2025-04-23
- Allowed for
- BH090 Land Subject to Inundation
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.