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

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Map Name Map Reference Map Title DescriptionSet I - HistoricalFloodingSet I - HistoricalFloodingSet I - HistoricalFloodingSet I - HistoricalFloodingSet I - HistoricalFloodingSet I - HistoricalFloodingSet I - HistoricalFloodingSet I - HistoricalFlooding2009s0578 - D009_0032009s0578 - D009_0042009s0578 - D009_0052009s0578 - D009_0062009s0578 - D009_0072009s0578 - D009_0082009s0578 - D009_0092009s0578 - D009_010HISTORICALFLOODINGHISTORICALFLOODINGHISTORICALFLOODINGHISTORICALFLOODINGHISTORICALFLOODINGHISTORICALFLOODINGHISTORICALFLOODINGHISTORICALFLOODINGDisplays Historical Flood Data from 2002 and Wigan Council Hotspot data aswell as Greater Manchester Fire and Rescue Records for Flood Call Outs.Displays potential development sites and Historical Flood Data provided byWigan Council and United Utilities Records. Key areas at risk of flooding havebeen derived where there is a high concentration of both sets of data.Displays Historical Flood Data from 2002 - 2009 and Wigan Council Hotspot datathat is within 5 metres of a main river, and potential development sites thatintersect with this.Displays Historical Flood Data from 2002 that is within 8m of a main river andWigan Council Hotspot data. The map also displays potential development siteswithin the borough.Displays Historical Flood Data originating from Surface Water Flooding from2002 to present day and Wigan Council Hotspot data.Displays Historical Flood Data supplied by United Utilities for the borough.Displays potential development sites intersecting DG5 historical flood recordssupplied by United Utilities at borough level and also with specific sites ingreater detail.Displays potential development sites intersecting DG5 historical flood recordssupplied by United Utilities at borough level.Set J - Open Space 2009s0578 - D010_001 OPEN SPACE Displays sites of Open Space in Wigan, as provided by Wigan Council, as wellas the Environment Agency Flood Zones and Wigan development sites.Set J - Open Space 2009s0578 - D010_002 OPEN SPACE Displays sites of Open Space in Wigan, as provided by Wigan Council.Set J - Open Space 2009s0578 - D010_003 OPEN SPACE Displays sites of Open Space in Wigan, as provided by Wigan Council, as well2009s0578 Final SFRA with Environment Agency Comments - L2 Ver5 Wigan.docXI
Map Name Map Reference Map Title Descriptionas proposed Wigan development sites.Set J - Open Space 2009s0578 - D010_004 OPEN SPACE Displays sites of Open Space in Wigan, as well as new development sites thatintersect Open Space that is within 5 metres of a main river.Set J - Open Space 2009s0578 - D010_005 OPEN SPACE Displays sites of Open Space in Wigan, as provided by Wigan Council, whichcould potentially be used for Flood Alleviation. It also shows New DevelopmentSites that intersect Potential Flood Alleviation Sites.Set J - Open Space 2009s0578 - D010_006 OPEN SPACE -FLOODALLEVIATIONSITESDisplays areas of Open Space which are within 5m of a Main River and PotentialFlood Alleviation Sites.Set K - StrategicSites2009s0578 - D011_001STRATEGICSITESDisplays key strategic sites in Wigan.Set L - FloodVelocity Map2009s0578 - D012_001FLOODVELOCITY MAPDisplays strategic flood velocities during a 1% AEP storm event obtained fromJFLOW+.Set M - CanalBreach VelocityGrids2009s0578 - D013_001CANALBREACHVELOCITYGRIDIndicates 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_002CANALBREACHVELOCITYIndicates 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 overtop2009s0578 Final SFRA with Environment Agency Comments - L2 Ver5 Wigan.docXII
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Wigan Borough Hybrid SFRAVolume I:
Page 3 and 4:
JBA OfficeJBA ConsultingSouth BarnB
Page 5 and 6:
AcknowledgmentsJBA would like to ac
Page 7 and 8:
Understanding flood risk from a pla
Page 9 and 10:
8.3 Planning considerations........
Page 11 and 12: AbbreviationsABDAreas Benefiting fr
Page 13 and 14: The key objectives of a SFRA are to
Page 15 and 16: 2 Flooding from RiversA detailed as
Page 17 and 18: 1. Astely Brook2. Bedford Brook3. W
Page 19 and 20: Unique ID Watercourse Description L
Page 21 and 22: 2.7 Understanding flood risk from a
Page 23 and 24: For example, flooding may affect ke
Page 25 and 26: 3 Flooding from CanalsThe SFRA has
Page 27 and 28: 3.2.2 Canal breach methodologyCanal
Page 29 and 30: 4 Flooding from ReservoirsFollowing
Page 31 and 32: direction in Future Water3, Making
Page 33 and 34: oundaries. Nine key CDAs have been
Page 35 and 36: CDA Sites Site TypeLark Hill, Astle
Page 37 and 38: particular hotspots where surface w
Page 39 and 40: important role to play in reducing
Page 41 and 42: In the reverse situation, where flo
Page 43 and 44: 8 Summary of riskA summary of flood
Page 45 and 46: Having followed this procedure it i
Page 47 and 48: 9 Outline Mitigation OptionsChapter
Page 49 and 50: Water-resistant materials for floor
Page 51 and 52: JBA Consulting - Engineers Scientis
Page 53 and 54: JBA Consulting - Engineers Scientis
Page 55 and 56: Table B-1: Flood Risk Balance Sheet
Page 57 and 58: Map Name Map Reference Map Title De
Page 61: Map Name Map Reference Map Title De
Page 81 and 82: D . Wigan Council - Data RegisterXX
Page 83 and 84: E . SUDs SuitabilityNew SiteReferen
Page 85 and 86: New SiteReferenceWig 354Site Addres
Page 87 and 88: New SiteReferenceWig 855Wig 857Wig
Page 91 and 92: New SiteReferenceWig 716Wig 706BSit
Page 97 and 98: Site Reference Site Location Soil T
Page 99 and 100: F . Flood Zone 3 Proposed Developme
Page 101 and 102: G . Environment Agency comments on
Page 103 and 104: Flood Hazard MappingThe Level 2 rep
Page 105 and 106: Planning LiaisonEnvironment Agency
Page 107 and 108: Guide makes further summation diffi
Page 109 and 110: Wigan Metropolitan Borough CouncilC
Page 111 and 112: of the extent of any works required
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Planning & Transport StrategyWigan
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Again, avoiding generalities, we ha
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EA comment:Guidance on the preparat
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Please give me a call to discuss wh
Page 121 and 122:
RECORD OF MEETINGStatus:JBA Project
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Level 2 Strategic Flood Risk Assessment (.pdf ... - Wigan Council

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