-
So it seems the Environment Agency built the https://check-long-term-flood-risk.service.gov.uk/map which shows that section of the riverbank as being free from flooding. Would raising a FOI on the Environment agency to explain why that section of the bank does not flood according to their map?
I found a report by WSP Parsons Brinckerhoff relating to the flood risk in Barking Riverside: Appendix D.pdf (lucmaps.co.uk) which may help?