Peak river flow climate change allowances by management catchment
Information on peak river flow allowances for flood risk assessments, and flood and coastal risk projects, schemes and strategies.
Applies to England
Documents
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This table provides the peak river flow allowances for each management catchment. You need this information if you are a:
- local planning authority preparing strategic flood risk assessments
- developer or agent preparing flood risk assessments for planning applications, and development consent orders for nationally significant infrastructure projects
- a risk management authority developing a flood and coastal risk project, scheme or strategy
To use the correct climate change allowances for peak river flow you need to identify the management catchment for your assessment. If you do not know the name of your management catchment, use the guidance and link to the peak river flow map in:
Last updated 28 February 2022 + show all updates
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Corrected the '2080s upper end' value for the 'West Cornwall and the Fal' catchment to 105%.
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Updated the spreadsheet to fix an error in the data - ‘Hull and East Riding’ central allowance for 2080s should be 20% (not 2%).
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Clarified that figures on spreadsheet are percentages.
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First published.