Flood risk information and maps

Flood risk information

In line with legislative requirements and Government policy, the following documents and flood risk maps have been prepared by the Council which provide information on all sources of flooding within the Borough. In addition, national planning policy has been strengthened to ensure that all new developments incorporate appropriate sustainable drainage (SuDS) measures in order to manage surface water runoff.

Local Flood Risk Management Strategy (LFRMS) – Sutton’s LFRMS 2014-20, adopted in 2015, sets out the Council’s vision for managing flood risk across the borough and a programme of measures for reducing the number of homes and businesses at risk of flooding from surface water, ordinary watercourses and groundwater.

Strategic Flood Risk Assessment (SFRA) – the SFRA Level 1 Report, published in December 2015, provides an updated assessment of all sources of flooding throughout the Borough and forms part of the evidence base for the Council’s planning policies and potential development sites currently being considered for inclusion in Sutton’s emerging Local Plan.

Preliminary Flood Risk Assessment (PFRA) – Sutton’s PFRA was published by the Council in 2011 in line with the Flood Risk Regulations 2009.

Surface Water Management Plan (SWMP) – a SWMP was prepared by the Council in 2011 as part of the Drain London project in order to gain a better understanding of the causes and effects of surface water flooding throughout the Borough and to identify the most cost effective methods of managing the risk.

Planning for Sustainable Drainage (SuDS) – new arrangements for approving and implementing SuDS measures proposed as part of new developments took effect on 6 April 2015 through the introduction of Schedule 3 of the Flood and Water Management Act 2010.

Borough Flood Risk Maps (SuDS) – interactive flood maps showing areas at risk of river flooding (EA Flood Zones), flood warning areas and areas at risk of surface water flooding are available on the Environment Agency (EA) website. More detailed maps published by the Council as part of the Strategic Flood Risk Assessment Level 1 Report and other documents, showing areas at risk of river, surface water, groundwater and sewer flooding, are also available via the above link.