Strategic Flood Risk Assessment - South Worcestershire ...

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New or re-development should adopt exemplar source control SUDS techniques toreduce the risk of frequent low impact flooding due to post-development runoff.Onsite attenuation schemes would need to be tested against the hydrograph of thereceiving watercourse to ensure flows are not exacerbated downstream within thecatchment.The site falls within an area indicated to potentially be susceptible to groundwateremergence. Further assessment of groundwater risk would be required and anassessment of suitable surface water mitigation techniques should be made at thedetailed FRA level.The A4104 Station Road and the B4083 Wyre Road, two of the main access roadsare at risk from fluvial flooding and surface water. Assessment of the minor accessroads flood risk will need to be assessed and if appropriate, suitable alternativeaccess arrangements away from the floodplain will need to be investigated further.Demonstration that development at this location can be made safe.2012s5947 S Worcestershire Level 2 SFRA Update FINAL Report v1.0.doc 138
Table 7-31: SWDP23/24 (Land adjacent to Station Road)OS NGR: SP 088378 Area: 11ha Brown/Greenfield: GreenfieldFlood Zone Coverage: FZ3a: 0% FZ3b: 0% FZ2: 55% FZ1: 45%Exception Test required? Yes, for Highly Vulnerable development in FZ2.Requirements for passing the Exception Test:To pass Part ‘b’ of the Exception Test, a FRA should demonstrate that: thedevelopment will be safe, will avoid increasing flood risk elsewhere, and will reduceflood risk overall.Preference should be given to locating development away from the west of the siteand Flood Zone 2. It should be possible to reduce flood risk at this developmentarea by using sequential design to locate more vulnerable developments towardshigher ground through building design and by meeting drainage requirements.New developments being located outside of Flood zone 2 need to ensure that noincrease in flood risk occurs. Areas with Flood Zone 2 should be kept as openspace.Consultation with the Local Authority and the Environment Agency should beundertaken at an early stage.2012s5947 S Worcestershire Level 2 SFRA Update FINAL Report v1.0.doc 139
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2012s5947 South WorcestershireStrat
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ContractThis Level 2 Strategic Floo
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Executive SummaryThis report is an
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Table 7-16: SWDP8/1 (Broomhall Comm
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NRDOrdinary WatercourseOS NGRPFRAPi
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identify the level of detail requir
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1.4 Approach1.4.1 General Assessmen
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1.5.3 Severn Trent WaterSevern Tren
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2 The Planning Framework and Flood
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Additionally Provision 110 of the A
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Risk ManagementAuthority (RMA)Distr
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3 Understanding Flood Risk in South
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earth embankment, flood wall and fl
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4 How Flood Risk is Assessed4.1 Def
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Zone 1Zone 2Zone 3aZone 3bTable 4-1
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etween the proposed level of commit
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5 Mapping and risk based approach5.
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The ability to manage flood risk fo
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Stage 3 - Applying the Sequential T
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6 Overview of future developmentThe
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A proposed 340 dwelling have been a
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Figure 6-5: Proposed Pershore Alloc
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6.3 Windfall sitesWindfall is unall
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7 Summary assessment of SWDP develo
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SUDS TypeSource ControlsTable 7-2:
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7.4 Summary tables and mapsTable 7-
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SUDS and the development site:SUDS
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Sources of Flood Risk:Primary flood
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Table 7-5: LP1 (Ivy Lane)OS NGR: SP
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Table 7-7: 2012SC (Stonebridge Cros
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emergence. Further assessment of gr
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Table 7-10: SWDP6/NEWJ (Land North
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Estimated Attenuation Storage Volum
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Table 7-12: SWDP6/6 (Old Northwick
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Soil TypeGreenfield Runoff Rate (l/
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Sources of Flood Risk:Surface water
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Table 7-14: SWDP6/21 (Former Hallow
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SUDS and the development siteSUDS T
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Table 7-16: SWDP8/1 (Broomhall Comm
Page 96 and 97: Surface water presents a risk to th
Page 98 and 99: Table 7-17: SWDP8/2 (Temple Laugher
Page 100 and 101: A44 Bromyard road, the A4440 Grove
Page 102 and 103: Table 7-18: SWDP8/3 (Land to the re
Page 104 and 105: impermeable surfaces may result in
Page 106 and 107: Table 7-19: SWDP9/2 (Land east of S
Page 108 and 109: impermeable surfaces may result in
Page 110 and 111: Table 7-20: SWDP9/3 (Boxing Club)OS
Page 112 and 113: Estimated Attenuation Storage Volum
Page 114 and 115: Sources of Flood Risk:Primary flood
Page 116 and 117: Table 7-22: SWDP9/7 (Canal Basin Pr
Page 118 and 119: Soil TypeGreenfield Runoff Rate (l/
Page 120 and 121: Sources of Flood Risk:The main sour
Page 122 and 123: Table 7-24: SWDP13/4 (Former playin
Page 124 and 125: Surface Water Drainage:As an indica
Page 126 and 127: Table 7-25: SWDP13/5 (Former Recrea
Page 130 and 131: Table 7-26: SWDP13/9 (Land off Mayf
Page 132 and 133: Greenfield Runoff Rate (l/s/ha)Esti
Page 136 and 137: eceiving watercourse to ensure flow
Page 140 and 141: Table 7-29: SWDP18/6 Land rear of t
Page 150 and 151: Table 7-32: SWDP23/26 (Land between
Page 156 and 157: Table 7-34: SWDP24/8 (Site behind H
Page 158 and 159: SUDS and the development site:SUDS
Page 162 and 163: Table 7-36: SWDP24/11 (Site behind
Page 164 and 165: overtopping of an unnamed tributary
Page 166 and 167: Table 7-37: SWDP24/13 (Land east of
Page 172 and 173: Table 7-39: SWDP25/9 (Land at Park
Page 174 and 175: access roads to the site are at ris
Page 176 and 177: Table 7-40: SWDP/VPx (Vale Park ext
Page 180 and 181: 8 FRA requirements for developers8.
Page 182 and 183: Figure 8-1: Rationale for flood res
Page 184 and 185: Local planning bodies should:Promot
Page 186 and 187: Temporary BarriersTemporary barrier
Page 188 and 189: flood risk. Development locations s
Page 190 and 191: 9 Recommended policy for management
Page 192 and 193: 10 Outcomes10.1 Summary of work und
Page 194 and 195: Appendices2012s5947 S Worcestershir
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AFlood Zone mapping2012s5947 S Worc
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BClimate change mapping2012s5947 S
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CHazard mapping2012s5947 S Worceste
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DSurface water flood risk mapping20
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D.2 200 years2012s5947 S Worcesters
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EFloodplain policy mapping2012s5947
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FSummary of risk to all proposed al
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GProperty and critical infrastructu
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Number of environmental sites at ri
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HConsultation and communication2012
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Offices atAtherstoneDoncasterEdinbu
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