Strategic Flood Risk Assessment - South Worcestershire ...

SUDS TypeSource ControlsTable 7-2: Summary of SUDS CategoriesTechniqueGreen Roof, Rainwater Harvesting, Pervious Pavements, RainGardensInfiltrationDetentionFiltrationInfiltration Trench, Infiltration Basin, SoakawayPond, Wetland. Subsurface Storage*, Shallow Wetland,Extended Detention Wetland, Pocket Wetland, SubmergedGravel Wetland, Wetland Channel, Detention BasinSurface Sand filter, Sub-Surface Sand Filter, Perimeter SandFilter, Bioretention, Filter Strip, Filter TrenchConveyanceDry Swale, Underdrained Swale, Wet Swale* The use of sub-surface storage is not encouraged by the EA as it provides no water quality treatment and is notconsidered the most sustainable option. Early master planning should consider above ground drainage features as earlyas possible.The suitability of each SUDS type for the proposed developments has been displayed using atraffic light colour system in the summary tables.SuitabilityDescriptionThe SUDS Group and its associated techniques are unlikelyto be suitable at the development site based on the results ofthis assessmentMore detailed assessment may demonstrate that this type ofSUDS is suitable for use at this siteThe SUDS Group and its associated techniques may besuitable at the development but is likely to require additionalengineering works. Some techniques from this group may notbe suitable for use at the development.The SUDS Group and its associated techniques are likely tobe suitable at the development site based on the results ofthis assessment.More detailed assessments should be carried out during thesite planning stage to confirm the feasibility of this type ofSUDS.2012s5947 S Worcestershire Level 2 SFRA Update FINAL Report v1.0.doc 44