Coastal flood risk management strategy, Pegwell Bay to Kingsdown

More documents

Recommendations

Info

Reach 4 ...continuedImprove 1 has been selectedbecause the existing level ofprotection just north ofSandown Castle is too low,and north Deal would beexposed to flooding if theembankment was damaged.In addition, a wave wall inDeal would mitigate againstfuture sea level rise, whichwould otherwise lead toincreasing flood damage inDeal by waves overtoppingthe seawall. The beachmanagement option wouldprovide a wider moreextensive shingle beach toprotect Deal, and is theleading economic solution.Deal seafront, Reach 4Reach 5: Deal Castle to Walmer CastleThe frontage between DealCastle and Walmer Castleconsists of a shingle beachwith no formal flood defences.The beach widens from 50m inthe north to 100m towards thesouthern end of the reach,providing sufficient flooddefence for Walmer and thesouth of Deal. There are twoscheduled monuments locatedimmediately behind the beach,with Walmer Castle set into ahistoric park and garden.A long-distance footpath runsalong the entire length of thefrontage.Strategic optionDo nothingDo minimumActionsNo further work will be undertaken on the existing defencesNo active maintenance will be undertaken. However, some minor beachmanagement work could be undertaken if these are beneficial to coastalprocesses for neighbouring frontagesDo minimum has been selected because the existing level of protection provided by the beach ishigh, and is expected to remain so with future sea level rise. No properties would be at risk if the ‘dominimum' option is adopted.12 Environment Agency Pegwell Bay to Kingsdown coastal strategy
Reach 6: Walmer Castle, Kingsdown and Oldstairs BayThis reach comprises thecoastal frontage betweenWalmer Castle and the MoDRifle Range. The frontageconsists of beaches with a seawall at Kingsdown,interspersed by timbergroynes.Behind the coastal defencesthe land rises relatively steeplyand consists predominantly oflow to medium densityresidential development, withagricultural land furtherinland.A long-distance footpath runsalong the northern frontagewithin the reach.Strategic optionDo nothingDo minimumMaintainSustainImproveActionsNo further work will be undertaken on the existing defencesNo pro-active maintenance, but breaches or failures in the existing defenceswill be repaired if they occurBeach recycling combined with replacement of existing timber groynes at the endof their remaining life (about 10 years). Supplemented by shingle when requiredSimilar to maintain option, but repairs to timber groynes will start early in thestrategy and additional shingle will be brought onto the beachA range of improvement options have been considered, including constructionof rock headlands, replacement of existing groynes and beach with rockrevetment, construction of rock groynes and the refurbishment and upgrade ofthe existing seawall at KingsdownMaintain has been selected since this option would prevent erosion and loss of property, and is themost cost-effective and environmentally acceptable solution.Reach 7: MoD Rifle RangeThe MoD Rifle Range consistsof an elevated plateau of fillmaterial in front of chalk cliffs,protected by a concreteseawall.The site and cliffs are subjectStrategic optionDo nothingDo minimumManagedrealignmentActionsto national environmentaldesignations and a footpathruns along the base of the cliffs.There is some uncertaintyabout the nature of the fillmaterial for release into theNo further work will be undertaken on the existing defencescoastal system. The sea wallhas collapsed at one sectionallowing some fill material toseep out.The site is owned by the MoD.Repair of failed sections of the seawall and reactive repairs to further failures.These repairs are likely to consist of steel sheet piled retaining walls or rockarmour infillFollowing a detailed investigation of fill material for contamination andappropriate remediation work, the existing seawall would be removed or left tocollapse allowing the site to return to natural processesManaged realignment has been selected. This would provide the maximum environmental benefit,restoring the coastline towards a more natural process, which would benefit the beaches to thenorth. This option is dependent on further analysis of the site and the availability of funding andintentions of the land owner, who will be responsible for implementation of this option.Environment Agency Pegwell Bay to Kingsdown coastal strategy 13
Page 2 and 3: Published by:Environment Agency in
Page 4 and 5: the Pegwell Bay toKingsdown coastli
Page 6 and 7: what do these options mean for me?N
Page 8 and 9: Reach 2: Shell Ness to Sandwich Bay
Page 10 and 11: erosion risk andtidal flood risk10
Page 14 and 15: Reach 8: Sandwich and Stonar LoopTh
Page 16 and 17: Reach 9: Stour ValleyAlong the Rive
Page 18 and 19: Notes18 Environment Agency Pegwell
Page 20: Would you like to find out more abo

Coastal flood risk management strategy, Pegwell Bay to Kingsdown

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?