Level 2 Strategic Flood Risk Assessment (.pdf ... - Wigan Council

Map Name Map Reference Map Title DescriptionBreach VelocityGridsBREACHVELOCITYGRIDLiverpool Canal through the Wigan borough. "Canal Hazard Zones" have beengenerated for areas which could flood if the Leeds and Liverpool canal were to overtopor breach. These hazard zones should influence the spatial placement ofdevelopment during the Sequential Test and highlight the need for FRA to investigatethe residual risk further during a site-specific FRA. It is recommended that detailedinvestigations should be carried out and results incorporated into the final designfinished floor levels of the development. Site emergency plans should also take theresidual risk into account.Set M - CanalBreach VelocityGrids2009s0578 - D013_025CANALBREACHVELOCITYGRIDIndicates potential breach failure velocity rates of canal pounds along the LeedsLiverpool Canal through the Wigan borough. "Canal Hazard Zones" have beengenerated for areas which could flood if the Leeds and Liverpool canal were to overtopor breach. These hazard zones should influence the spatial placement ofdevelopment during the Sequential Test and highlight the need for FRA to investigatethe residual risk further during a site-specific FRA. It is recommended that detailedinvestigations should be carried out and results incorporated into the final designfinished floor levels of the development. Site emergency plans should also take theresidual risk into account.Set M - CanalBreach VelocityGrids2009s0578 - D013_026CANALBREACHVELOCITYGRIDIndicates potential breach failure velocity rates of canal pounds along the LeedsLiverpool Canal through the Wigan borough. "Canal Hazard Zones" have beengenerated for areas which could flood if the Leeds and Liverpool canal were to overtopor breach. These hazard zones should influence the spatial placement ofdevelopment during the Sequential Test and highlight the need for FRA to investigatethe residual risk further during a site-specific FRA. It is recommended that detailedinvestigations should be carried out and results incorporated into the final designfinished floor levels of the development. Site emergency plans should also take theresidual risk into account.Set N - CanalBreach Depth Grids2009s0578 - D014_001CANALBREACHIndicates potential breach failure flooding depths of canal pounds along the LeedsLiverpool Canal through the Wigan borough. "Canal Hazard Zones" have been2009s0578 Final SFRA with Environment Agency Comments - L2 Ver5 Wigan.docXX