The Planning System and Flood Risk Management - Offaly County ...

TermsDefinition51ResilienceResistanceReceptorsResidual riskRun-offSequential approachScoping flood riskassessmentScreening flood riskassessmentSourceSometimes known as “wet-proofing”, resiliencerelates to how a building is constructed in sucha way that, although flood water may enter thebuilding, its impact is minimised, structuralintegrity is maintained, and repair, drying &cleaning and subsequent re-occupation arefacilitated.Sometimes known as “dry-proofing”, thisrelates to how a building is constructed toprevent flood water entering the building ordamaging its fabric.Things that may be harmed by flooding (e.g.people, houses, buildings or the environment).The risk which remains after all risk avoidance,substitution and mitigation measures have beenimplemented, on the basis that such measurescan only reduce risk, not eliminate it.The flow of water, caused by rainfall, from anarea which depends on how permeable the landsurface is. Run-off is greatest fromimpermeable areas such as roofs, roads andhard standings and less from vegetated areas –moors, agricultural and forestry land.The sequential approach is a risk-based methodto guide development away from areas thathave been identified through a flood riskassessment as being at risk from flooding.Sequential approaches are already establishedand working effectively in the plan-making anddevelopment management processes.A generally qualitative or semi-quantitativeassessment to confirm sources of flooding thatmay affect a plan area or proposed developmentsite, to appraise the adequacy of existinginformation and to provide a qualitativeappraisal of the risk of flooding and potentialimpact of a development on flooding elsewhereand of the scope of possible mitigationmeasures.A broad-brush assessment to identify whetherthere are any flooding or surface watermanagement issues related to a plan area orproposed or existing development site that maywarrant further investigation.Source refers to a source of hazard (e.g. the sea,heavy rainfall).Planning Guidelines