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Strategic Flood Risk Assessment (SFRA)

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Ipswich Borough Council's Level 2 Strategic Flood Risk Assessment was published in May 2011.

Local Planning Authorities have to produce a SFRA to inform their land use allocations and planning policies. The SFRA comprises a main report and appendices which refer to potential sources of flooding considered likely to affect Ipswich.

The SFRA informed the production of the Development and Flood Risk supplementary planning document which provides specific guidance to developers including a framework of requirements for "safe" development in the flood plain.

You can download the SFRA and its appendices in pdf format below:

Appendices

1   Guidance for Site allocations

2   Speed of Onset and Duration of Flooding

3   Anglian Water Comments

4   Guidance on Producing Flood Plans for New Buildings

5.1   Ipswich Boundary & Major Watercourses

5.2   Tidal Defence - Structures

5.3   Tidal Defence - Crest Levels

5.4   Tidal Defences - Expected Failure Dates

5.5   Local Flooding, Watercourses, ASTSWF and Groundwater Flooding

5.6   Geology, General Topography & Minor watercourses

5.7   Trunk Sewers

5.8   Highway and Railway Drains and SUDS Catchments

5.9   Extent of 1953 Tidal Flood

5.10   Extent of 1939 Fluvial Flood

5.11   Extent of 1947 Fluvial Flood

5.12   LiDAR Data Survey Dates Sheet 1 and Sheet 2

5.13   Ground Level Contours from LIDAR

5.14   Flood Compartments

5.15   Variation in Tidal Flood Frequency - Existing @ 2010

5.16   Variation in Tidal Flood Frequency - Existing @ 2110

5.17   Variation in Tidal Flood Frequency - Proposed @ 2015

5.18   Variation in Tidal Flood Frequency - Proposed @ 2110

5.20   Hazard Mapping Existing Defences Fully Operational at 0.5% AEP in 2010

5.21   Hazard Mapping Existing Defences Fully Operational at 0.5% AEP in 2110

5.22   Hazard Mapping Existing Defences Fully Operational at 0.1% AEP in 2010

5.23   Hazard Mapping Existing Defences Fully Operational at 0.1% AEP in 2110

5.24   Hazard Mapping Proposed Defences Fully Operational at 0.5% AEP in 2110

5.25   Hazard Mapping Proposed Defences Fully Operational at 0.1% AEP in 2015

5.26   Hazard Mapping Proposed Defences Fully Operational at 0.1% AEP in 2110

5.27   Existing Vulnerable Development and Tidal Flood Hazard at 0.1% AEP in 2010

5.28   EA Flood Zone 3 and Brown Field SHLAA sites

5.29   Areas where Infiltration type SUDS are likely to be possible

5.30   Flood Storage Facilities Existing & Future Needs

5.31   Flood Depth Plans 0.1% AEP 2110

5.32   Floodwater Velocity Plans 0.1% AEP 2110

5.34   Combined Hazard Ratings Flood Level 5.28mAOD without Barrier

5.35   Combined Hazard Ratings Flood Level 5.28mAOD with Barrier

5.36   EA Flood Zone 3 & 0.5% AEP @2110

5.37   Flood Risk to People Calculator

Contact Details

Ipswich Borough Council,
Planning Policy,
3W Grafton House,
15-17 Russell Road,
Ipswich,
IP1 2DE

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01473 432019