ODU11:North ShoreRoad
ODU11:NorthShoreRoad
Overview
ODU11extendsalongtheresidentialNorthShoreRoadfrontage.
Defences
Residentialpropertiesandaccompanyingadhocmixofprivatelyownedandmaintaineddefencescharacterisethisunit.Defencesvaryfromconcretewallsto embankmentstobreezeblockstructures.Consequently,defencelifeandconditionvaryfromdefencetodefence,butgenerallyhaveresiduallivesofbetween10 and20years.
Environment
TheintertidalHarbourareaborderingthisrelativelyshelteredfrontageisenvironmentallydesignatedasSSSI,Ramsar,SPAandSAC.
ShorelineManagementPlanPolicy
Holdthelineforthenext100years.
Risk
FloodriskhereisfromtidalinundationinthewestoftheunitinfrontofSinahLane,anderosiontotheeastinfront ofNorthShoreRoad.Withnodefences,thereisariskoffloodingandcoastalerosionintheshorttermonthewest side,howevererosionriskontheeastsideisnotpredictedtooccuruntilthemediumterm.
Duringlargerreturnperiodseventsinthefuture,withoutdefences,thereispotentialforthisfloodareainthewest, tomergewiththefloodcellfromthesouth,whereupto83propertiesareshowntobeatriskoverthenext100 years.
Donothing damages
£3,471,000 Presentvalue
Erosionrisk
Numberofpropertiesatrisk,withnodefences
Tidalfloodrisk
Numberofpropertiesatrisk,withnodefences
Themapsbelowshowthemodelledextentanddepthsofanextremetidalfloodevent(1in200year,0.5%annual probability),withoutanydefences,todayandin100years,allowingforsealevelrise. TODAY100YEARS
StrategicIntent
TheStrategicintenthereistomaintainfloodanderosion protectiontoresidents,byconstructingnewdefencesinstages, dependantonrisk.Wherelandownersarenolongerableto maintaintheirdefences,orfundingforaschemeisnotfound, adaptationwillneedtobeexploredasacommunity,toadjustto therealityoffuturecoastalfloodanderosionrisk.
NextSteps
Noneidentifiedforthisfrontageintheshort-term,otherthanongoing conversationswithcommunitiesinrelationtolevelsofriskandwhat todointheeventofaflood.