1 in 100 year flood

Key term for Edexcel GCSE Geography B, used in River Fieldwork.

Definition

A flood event with a 1% chance of occurring in any given year (High Probability).

Exam Context

1 in 100 year flood appears in Edexcel GCSE Geography B revision content for Geographical Investigations, especially River Fieldwork and Secondary data sources.

Geographical Investigations River Fieldwork Secondary data sources

Found in Revision Notes

Geographical Investigations

Secondary data sources

River Fieldwork • Secondary data sources

Revise note

Related Key Terms

1 in 1000 year flood Accuracy Annotation Annual Exceedance Probability (AEP)

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