Strategic Flood Risk Assessment

The Strategic Flood Risk Assessment (SFRA) is a study intended to evaluate the risk of flooding to the borough from all sources, now and in the future. It takes account of the impacts of climate change and assesses the effect land use changes and development in the borough will have on flood risk. The study was carried out in two separate reports – Level 1 and Level 2.

The Strategic Flood Risk Assessment:

• informs planning policy development that will support decision making, particularly within areas with higher risk of flooding
• steers development towards areas of lowest flood risk. This is done through application of the sequential test and, where necessary, the Exception Test (read more about this in the National Planning Policy Framework guidelines)
• supports the development management process by providing more informed responses to developer’s proposals, which may be adversely affected by flooding
• supports Southwark Council in the discharge of its duties while providing the evidence to inform future infrastructure planning and investment decisions
• supports developers’ flood risk assessment during the planning application process

Part 1 of the SFRA was produced in 2016 and adopted in March 2017. We reviewed it at this time because:

• there has been a significant change in the legislative framework for flood risk management via the Flood Risk Regulations 2009 and the Flood and Water Management Act 2010
• applicable planning policy and associated guidance have evolved with the introduction of the National Planning Policy Framework (NPPF) and the National Planning Practice Guidance (NPPG)
• there is a better understanding of surface water and groundwater flooding
• the Environment Agency has produced more refined breach models relating to tidal flood risk from the River Thames

Strategic Flood Risk Assessment: Level 1

• Strategic Flood Risk Assessment Report ^{(PDF, 473kb)}
• Non Technical Summary ^{(PDF, 24kb)}

Appendices to the Level 1 Assessment are below.

Strategic Flood Risk Assessment: Level 2

Part 2 of the Strategic Flood Risk Assessment (2020) carried out the sequential and exception test on specific sites. It is available for download here. 

• Southwark Plan: Level 2 Strategic Flood Risk Assessment (July 2020) ^{(PDF, 55.2mb)}

Strategic Flood Risk Assessment Level 1: Appendices

Appendix A

• Map A1 River Network ^{(PDF, 4mb)}
• Map A2 Flooding History ^{(PDF, 3.5mb)}
• Map A3 Flood Risk From Rivers And Sea ^{(PDF, 4.1mb)}
• Map A4 Flood Map for Surface Water ^{(PDF, 4.1mb)}
• Map A5 Areas at Risk of Flooding from Groundwater ^{(PDF, 3.9mb)}
• Map A6 Flood Risk from Reservoirs ^{(PDF, 4.2mb)}
• Map A7 Flood Risk Management Infrastructure ^{(PDF, 4.5mb)}
• Map A8.1 Maximum Flood Extents ^{(PDF, 4.4mb)}
• Maps A8.2 - A8.4 Breach Mapping ^{(PDF, 71.4mb)}
• Map A9 Emergency Flood Planning ^{(PDF, 3.9mb)}
• Map A10.1 Vulnerable Sites Flood Zones ^{(PDF, 3.7mb)}
• Map A10.2 Vulnerable Sites Flood Risk Surface Water ^{(PDF, 4.6mb)}
• Map A10.3 Vulnerable Sites Flood Risk Groundwater ^{(PDF, 4.2mb)}
• Map A11 SuDS Summary Map ^{(PDF, 3mb)}
• Map A12 Topography ^{(PDF, 3.7mb)}

Appendix B

• SuDS Guidance ^{(PDF, 579kb)}

Appendix C

• Mapping and Data Summary ^{(PDF, 51kb)}

Appendix D

• SFRA Management Guide ^{(PDF, 58kb)}

Appendix E

• Historic Flooding ^{(PDF, 68kb)}

Appendix F

• Camberwell Existing System M30 ^{(PDF, 1.2mb)}
• Camberwell Existing System M100 ^{(PDF, 1.4mb)}
• Herne Hill Existing System M30 ^{(PDF, 1.1mb)}
• Herne Hill Existing System M100 ^{(PDF, 1.7mb)}
• Herne Hill Solution M30 ^{(PDF, 1.5mb)}
• Herne Hill Solution M100 ^{(PDF, 1.6mb)}
• Peckham Rye Existing System Model M30-120 ^{(PDF, 1.6mb)}
• Peckham Rye Existing System Model M100-120 ^{(PDF, 1.7mb)}

Appendix G

• Spatial & Development Recommendations ^{(PDF, 31kb)}

Appendix H

• Developers Guide ^{(PDF, 856kb)}

Appendix I

• Basements and Flooding ^{(PDF, 53kb)}

Page last updated: 26 July 2024