Comment

Representation ID: 167306

Received: 18/10/2018

Respondent: Cambridgeshire County Council

5.8 ENVIRONMENTAL SUSTAINABILITY AND CLIMATE CHANGE
Comment that the residual flood risk needs to be properly illustrated and flood zone mapping updated to include climate change and functional flood plain

RLW modelling assesses and confirms the issue of residual flood risk within development area. Risks need to be properly illustrated and flood zone mapping updated to include climate change and functional floodplain. Normally part of strategic flood risk assessment (SFRA). Information used to enable flood risk sequential approach to the location of development within the site. Risk otherwise that vulnerable development will be located in areas with significant residual risk from breaching of river banks. Existing protection in this area is not designated on flood map, has no long term maintenance plan and is of varied construction quality.

County Council only recently aware of these main river issues. Not part of conversations around school locations. If schools or other vulnerable development are located on edge of flood zones, this would be a concern.

While the details of surface water management details can be largely dealt with as part of site design, it is important that surface water drainage systems would not be inundated by river, removing any capacity to protect site from impacts of direct rainfall.