ODU2:NorthneyMarina
Mapdata:Google©2016-2022,DataSIO,NOAA,U.SNavy,NGA,GEBCO,IBCAO, Landsat/Copernicus
Overview
ThisunitislocatedbetweenODU1Aand1BandencompassesNorthneyMarina andtheLangstoneQuaysResort.TheMarinacomplexincludesamixof businessesandmorerecently,anumberofresidentialproperties.Thereis potentialforfurtherdevelopmenthereinthefuture.
Defences
Existingdefences,wherepresent,areprivatelyownedandmaintainedinformal embankmentsandlocalisedrockarmour.Residuallivesofthesedefencesare typicallybetween15and20years.Thereareveryfewpropertiesatriskasthe marinaisonrelativelyhighland.
Environment
Thefrontageissurroundedbyasuiteofenvironmentaldesignations(Ramsar, SPA,SAC,SSSI)whichcovertheintertidalareasoutsideofthemarinaitself. Landward,themarinaandhotelfallwithintheChichesterHarbourNational Landscape.
ShorelineManagementPlanPolicy
HoldtheLinealongthewholeofthisfrontageoverthenext100years.
ODU2location
ODU2
Risk
Floodanderosionriskislowonthesiteitself,howevertheaccessroadtothefrontagealongNorthneyRoad (ODU1A)isatsignificantfloodrisknowandintothefuture.TheviabilityofNorthneyMarinaandsurrounding businesseswillthereforebehighlydependentonmaintainingaccesstothesiteviaNorthneyRoadintothe future.
Themapsbelowshowthemodelledextentanddepthsofanextremetidalfloodevent(1in200year,0.5% annualprobability),withoutanydefences,todayandin100years,allowingforsealevelrise.
Erosionrisk
Numberofpropertiesatrisk,withnodefences
Tidalfloodrisk
Numberofpropertiesatrisk,withnodefences
StrategicIntent
TheStrategicintentfortheunitisadaptationofassetstobecome moreresilienttoclimatechangeimpactsinthefutureasfloodand erosionriskisverylow.Iflandownerswishtomaintain(andfund) theirexistingdefencesinthefuture,theywillneedtoobtainthe relevantlicencesandconsentsfirst.
NextSteps
Noneidentifiedforthisfrontageintheshort-term,otherthanongoing conversationswithcommunitiesinrelationtolevelsofriskandwhat todointheeventofaflood.