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

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Table 2-1: NFCDD Defence Assets in the Wigan BoroughUnique ID Watercourse Description Location Maintainer DesignStandard(ReturnPeriod InYears)01323ATHL0101L06Raised poured concreteflood wallSpill weir toLilford ParkBasinEnvironmentAgency 5001323ATHL0101L07Atherton BrookFlood bank. Raised earthembankmentReservoirembankmentTo LilfordPark BasinEnvironmentAgency 5001212DOUG0501L12Channel Bed &EmbankmentCorporationStreetEnvironmentAgency 4001212DOUG0501R06Channel Bed & WallA49Wallgate toFootbridgerear of BusDepotEnvironmentAgency 4001212DOUG0501R09Channel Bed & WallSwanMeadowRoad Private 4001212DOUG0501R10Channel Bed &EmbankmentDeromasEnvironmentAgency 4001212DOUG0501R16DouglasChannel Bed & WallA577-MILLGATE(B5238)EnvironmentAgency 4001323GLAZ0201R03Flood Bank - Raisedearth embankmentEnvironmentAgency 5001323GLAZ0209R10GlazeFlood bankFlood bankdownstreamofHawkhurstBridge(JennetsLane roadbridge)EnvironmentAgency 5001323HIND0101L01HindsfordBrookFlood bank - Raisedearth embankmentEnvironmentAgency 5001323PENT0101R03Earth flood bankEnvironmentAgency 5001323PENT0101R01Earth flood embankmentlinked to PenningtonBankFromconfluencewith BedfordBrookupstream toPennigtonBridgeEnvironmentAgency 5001323PENT0101L06Earth embankment linkedto Pennington BankFromPenningtonBridgeupstream toBreastonBridgeEnvironmentAgency 5001323PENT0101R06PenningtonBrookEarth flood embankmentlinked to PenningtonBankFromPenningtonBridgeEnvironmentAgency 502009s0578 Final SFRA with Environment Agency Comments - L2 Ver5 Wigan.doc 11
Unique ID Watercourse Description Location Maintainer DesignStandard(ReturnPeriod InYears)upstream toBreastonBridge01323PENT0102R07Flood BankEnvironmentAgency 5001323PENT0103R11Flood BankVery lowembankmentEnvironmentAgency 5001323PENT0101L05Earth flood embankmentlinked to PenningtonBankFromconfluencewith BedfordBrookupstream toPennigtonBridge.EnvironmentAgency 5001323PENT0101L02Flood banks earth onboth sides. Embankmentlinked to PenningtonBankUpstreamWarringtonRoadEnvironmentAgency 5001323PENT0101L01Earth flood embankmentlinked to PenningtonBankFromconfluencewith BedfordBrookupstream toPennigtonBridgeEnvironmentAgency 5001323PENT0101R02Earth flood embankmentlinked to PenningtonBankEnvironmentAgency 50A GIS layer was produced which contained the following information:NFCDD referenceAsset typeMaintainerAsset description and locationAsset length and heightAsset conditionStandard of protectionThe design standard of the defence defined as a return period in yearsWatercourseDesign levelDefence maintenance2009s0578 Final SFRA with Environment Agency Comments - L2 Ver5 Wigan.doc 12
Page 1 and 2: 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: 1. Astely Brook2. Bedford Brook3. W
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 69 and 70:
Map Name Map Reference Map Title De
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
D . Wigan Council - Data RegisterXX
Page 83 and 84:
E . SUDs SuitabilityNew SiteReferen
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New SiteReferenceWig 354Site Addres
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New SiteReferenceWig 855Wig 857Wig
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New SiteReferenceWig 716Wig 706BSit
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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
Page 113 and 114:
Planning & Transport StrategyWigan
Page 115 and 116:
Again, avoiding generalities, we ha
Page 117 and 118:
EA comment:Guidance on the preparat
Page 119 and 120:
Please give me a call to discuss wh
Page 121 and 122:
RECORD OF MEETINGStatus:JBA Project
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