Strategic Flood Risk Assessment Reports

Level 1

The Strategic Flood Risk Assessment (SFRA) (level 1 - August 2012) is a report identifying flood risk constraints in Aylesbury Vale. It gives procedures that should be followed in planning to tackle flood risk during any development.

This 2012 SFRA covers the whole of the district and has been produced to inform the Vale of Aylesbury Plan (VAP). It also helps inform a new document called the Water Cycle Strategy, (which advises on water services infrastructure) and any potential planning enquiries.

The SFRA is an update of a study previously produced for us by Royal Haskoning which was published in 2007.

The 2012 SFRA includes a set of flood maps covering the district and detailed coverage of Aylesbury, Buckingham, Winslow, Haddenham and Wendover. The main report summarises the planning requirements of VAP, the main causes of flooding in the district and key historic incidents. It also sets out measures that need to be taken in planning for new development, managing surface water flooding and procedures for emergency planning.

Figures 1-9 show the study area, a geological map, a committed housing development map and flood maps for main settlements. Figure 10-15 are historic flooding maps for the district and main settlements.

The document, associated appendices and figures are available to view/download below.

A previous level 2 SFRA was produced in 2009 for Aylesbury Town. Part of it's purpose was to advise on potential sites around Aylesbury. This level 2 study is still relevant and now includes a new updated introductory page

• Strategic Flood Risk Assessment Main Report Level 1 (August 2012)
• Strategic Flood Risk Assessment Aylesbury Data register Appendix E (August 2012)
• Strategic Flood Risk Assessment Appendix F (August 2012)
• Figure 1 Study Area
• Figure 2 Geographical map for Aylesbury and the surrounding area
• Figure 3 Flood Map for Aylesbury Town
• Figure 4 Flood map for the district
• Figure 5 Flood map for Aylesbury
• Figure 6 Flood map for Wendover
• Figure 7 Flood map for Haddenham
• Figure 8 Flood map for Buckingham
• Figure 9 Flood map for Winslow
• Figure 10 Historic flood map for the district
• Figure 11 Historic flood map for Aylesbury
• Figure 12 Historic flood map for Wendover
• Figure 13 Historic flood map for Haddenham
• Figure 14 Historic flood map for Buckingham
• Figure 15 Historic flood map for Winslow
• Figure 16 Data extent map
• Figure 17 Hydraulic structure in Aylesbury Vale
• Figure 18 Hydraulic structures in Aylesbury Town
• Figure 19 Hydraulic structures in Wendover
• Figure 20 Hydraulic structures in Haddenham
• Figure 21 Hydraulic structures in Buckingham
• Figure 22 Hydraulic structures in Winslow

Level 2

The level 1 district-wide  strategic flood risk assessment (SFRA) identified the need for a level 2 assessment to guide development at Aylesbury. The level 2 study was commissioned to compare the flood risks of the 3 alternative directions of growth for the town, to define the functional floodplain, and to guide the detailed design of surface water and flood risk attenuation measures for development.

PLEASE NOTE : due to the size of the report, the figures (maps) have been separated out. They can be accessed  by following the links below.

• The Aylesbury level 2 SFRA report
• Figure 1 Study area and watercourses
• Figure 2 Option B Eastern Growth Arc - with committed development areas
• Figure 3 Option C Southern Growth Arc - with committed development areas
• Figure 4 Option D Combined East and Southern Growth Arc - with committed development areas
• Figure 5 Location of raised flood defences and defacto defences
• Figure 6 Defended 5% annual probability flood outlines
• Figure 7 Flood hazard from the present day 5% annual probability
• Figure 8 Flood hazard from the future 5% annual probability with climate change
• Figure 9 Defended 1% annual probability flood outlines
• Figure 10 Flood hazard from the present day defended 1% annual probability
• Figure 11 Flood hazard from the future defended 1% annual probability with climate change
• Figure 12 Defended 0.1% annual probability flood outlines
• Figure 13 Flood hazard from the present day defended 0.1% annual probability
• Figure 14 Flood hazard from the future defended 0.1% annual probability with climate change
• Figure 51 Rapid inundation zone for present day 1% annual probability
• Figure 52 Other sources of flooding
• Figure 53 Present day 1% annual probability residual flood risk with a storage reservoir at Bear Brook
• Figure 54 Present day 1% annual probability residual flood risk with a storage reservoir at Wendover Brook
• Figure 55 Present day 1% annual probability residual flood risk with a storage reservoir north of the Grand Union Canal
• Figure 56 Present day 5% annual probability residual flood risk with all potential storage reservoirs
• Figure 57 Future 5% annual probability residual flood risk with all potential storage reservoirs
• Figure 58 Present day 1% annual probability residual flood risk with all potential storage reservoirs
• Figure 59 Future 1% annual probability residual flood risk with all potential storage reservoirs
• Figure 60 Present day 0.1% annual probability residual flood risk with all potential storage reservoirs
• Figure 61 Future 0.1% annual probability residual flood risk with all potential storage reservoirs
• Useful references for developers