The purpose of this study was to find viable space for SuDS across all 32 boroughs and the City of London, and identify the locations for SuDS schemes that could achieve the greatest benefits in terms of surface water flood risk resilience, sewer capacity and natural capital. The results can be used by stakeholders, such as Lead Local Flood Authorities, to find out which areas and types of SuDS would be most effective, as a starting point to build on for a Local Flood Risk Management Strategy, feasibility study, more detailed modelling or business case.
The results have been mapped across London for 6 scenarios: all SuDS (present day), all SuDS (climate change), public land SuDS, private land SuDS, green SuDS and grey SuDS.
The output is a geodatabase that contains a suite of attributes for each individual SuDS opportunity, including SuDS type, area, maximum volume, capex, damages avoided, benefit cost ratio and percentile band, land ownership, deliverability attributes. These can be examined at a Local Authority, strategic catchment, neighbourhood or street scale. SuDS opportunities can be selected or filtered in GIS software to find the most suitable by e.g. land ownerships, deliverability attributes or benefit cost ratio.
This dataset uses Ordnance Survey Mastermap data and therefore is only available to organisations that are part of the Public Sector Geospatial Agreement (PSGA). If you do not know if your organisation is part of the PSGA, you can search your organisation here: PSGA member finder | Government and public sector | OS
To request access, please create a datastore account first and then email SurfaceWaterGroup@london.gov.uk who can grant your account access.