Information

Surface water management planning: guidance (2013)

Guidance to assist the responsible authorities in preparation of Surface Water Management Plans (SWMPs) to help with the management of surface water flooding. This guidance has now been superseded by the 2018 edition.


Appendix 5 - Regional Pluvial Hazard maps

Table 1 - Model scenarios for the regional pluvial hazard maps
Scenario Return Period Loss Blanket Storm Duration (hours)
1 10 5 year rainfall return period in urban areas 1
2 10 5 year rainfall return period in urban areas 3
3 30 5 year rainfall return period in urban areas 1
4 30 5 year rainfall return period in urban areas 3
5 30 + climate change increase 5 year rainfall return period in urban areas 1
6 30 + climate change increase 5 year rainfall return period in urban areas 3
7 50 5 year rainfall return period in urban areas 1
8 50 5 year rainfall return period in urban areas 3
9 100 5 year rainfall return period in urban areas 1
10 100 5 year rainfall return period in urban areas 3
11 200 5 year rainfall return period in urban areas 1
12 200 5 year rainfall return period in urban areas 3
13 200 + climate change increase 5 year rainfall return period in urban areas 1
14 200 + climate change increase 5 year rainfall return period in urban areas 3

The areas to be modelled and output resolutions are shown in Figure A3.

Figure A3 - The Regional Pluvial Areas to be modelled

Figure A3 – The Regional Pluvial Areas to be modelled

Contact

Alan.Wyper@scotland.gsi.gov.uk

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