East Solent Shoreline Management Plan Stage 1
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EAST SOLENT SHORELINE MANAGEMENT PLAN STAGE 1 Volume I The Open Coast Contents Page Preface ............................................................................................................................................................... I Contents.............................................................................................................................................................3 Glossary.............................................................................................................................................................4 1 Introduction .........................................................................................................................................7 1.1 Strategic background............................ .........................................................................7 1.2 The SMP process............................................................................................................ 7 1.3 The East Solent S M P ......................................................................................................7 1.4 Report outline .................................................................................................................8 2 C on su ltatio n ...................................................................................................................................... 12 2.1 Consultees ..................................................................................................................... 12 2.2 Consultation process ....................................................................................................12 3 Coastal p ro cesses..............................................................................................................................15 3.1 Introduction...................................................................................................................15 3.2 Geological evolution.....................................................................................................15 3.3 Beach sediment distribution ........................................................................................17 3.4 Historical evolution.......................................................................................................17 3.5 Tidal regim e...................................................................................................................23 3.6 Wave clim ate............... .................................................................................................25 3.7 Sediment transport........................................................................................................27 3.8 Joint probability conditions and existing defence standards..................................29 3.9 Future changes............... ...............................................................................................30 3.10 Existing monitoring programmes ..............................................................................35 4 Existing shoreline management ....................................................................................................37 4.1 Introduction...................................................................................................................37 4.2 R eview ............................ !..............................................................................................37 5 The natural environm ent................................................................................................................ 43 5.1 Introduction...................................................................................................................43 5.2 Designated nature conservation are as........................................................................43 5.3 Riture designations ......................................................................................................46 5.4 Responsibilities and restrictions due to conservation designations.......................47 5.5 Implications for shoreline management.................................: ............. ................. 47 6 Land use and the human environm ent................................................... ..................................49 6.1 Land use and recreation............................................................................................... 49 6.2 Nearshore activities......................................................................................................53 6.3 Landscape conservation and historic site s.................................................................53 6.4 Implications for shoreline management................. .............................. ............... 56 6.5 Future trends .................................................................................................................56 E*m Sole* Shoreline M iU|«nM i PUi Volume I Preface The East Solent Shoreline Management Plan is presented in four volumes. This document is Volume I. It presents background information on coastal processes, existing management operations, the natural environment, land use and the human environment that is necessary in the formulation of management plans for the open coastline between Pagham and the River Hamble, including Pagham Harbour. The remaining three Volumes of the East Solent Shoreline Management Plan include: the coastal defence objectives, management units, preferred management options, recommended further studies and future review programme for the open coast (Volume II) • the background management information for Chichester, Langstone and Portsmouth Harbours (Volume HI) • the coastal defence objectives, management approach, preferred management options, recommended further studies and future review programme for the harbours, including Pagham Harbour (Volume IV). Chichester District Council, acting on behalf of the East Solent Coastal Group, commissioned HR Wallingford to undertake the Shoreline Management Plan in accordance with the Consultant’s Brief and the Ministry of Agriculture, Fisheries and Food document “Shoreline Management Plans - A Guide for Coastal Defence Authorities". The Steering Committee for the Group comprised: Mr D Bell - Technical Services Department - Chichester District Council (Lead Authority) Mr A Greenhouse and Mr P Willey- Planning and Development Department - Fareham Borough Council Mr M Wheeler - Engineering Services -Gosport Borough Council Mr G Uoyd - Engineering Services - Portsmouth City Council Mr M Smith - Technical Services - Havant Borough Council Mr C Harding - Environment Agency Dr R Ekins - English Nature Mr D Green - Directorate of Planning and Housing - Arun District Council (Observer) Mr Chris Harding of the Environment Agency was the Project Manager for the Group. Mr Malcolm Smith of Havant Borough Council was Chairman of the Steering Committee. The Plan was formulated by a project team led by HR Wallingford with support from Rendel Palmer & Tritton, the RACER Group of Portsmouth University, and Ecological Planning and Research Ltd. The Project Manager was M r Tom Coates of HR Wallingford. Contributing authors included Mr Mark Lee (RPT), Mr Jerzy Motyka (HRW), Dr Kathryn Carpenter (HRW), Mr Andrew Bradbury (RPT) and Dr Malcolm Bray (RACER). The HR Wallingford job number was CGR 2024. Prepared by P r , .................. (job title) Approved by Date © HR Wallingford Limited 1997 E i* S<M ShorrlMK PUa 1 Votamc I CHICHESTER DISTRICT COUNCIL IIf Havant BOROUGH COUNCIL Portsmouth CITY COUNCIL BOROUGH FAREHAM COUNCIL GOSPORT BOROUGH COUNCIL f ENGLISH En v ir o n m e n t NATURE Ag e n c y i aa— »T»niir . East Solent Shoreline Management Plan Volume I The Open Coast Report EX 3441 June 1997 HR Wallingford Address and Registered Office: HR W allingford Ltd. Howbery Park, Wallingford, Oxon 0X10 8BA Tel: + 44 (0)1491 835381 Fax: + 44 (0)1491 832233 Ragijtarad In England No. 2562099. HR Wallingford l» ■ wtio*y o w iw d subsictary ol HR Wallingford Group Ltd. Ean Solent Shoreline Management Plan Volume I Tables Tabic 1 Consultees involvement in Stage 1 and summary of interests ................................................. 13 Table 2 Lithological descriptions of the East Solent solid and drift formations................................. 15 Table 3 Tide levels and'predicted extreme water levels (m O D )............................................................23 Table 4 Extreme wave heights (non-directional).......................................................................................25 Table 5 Worst case joint probabilities conditions .....................................................................................29 Table 6 Definition of site designations ...................................................................................................... 43 Table 7 Historic environment designations relevant to the open c o a s t.................................................54 Table 8 A summary of relevant planning policies for the East Solent (see relevant local plans for details)...............................................................................................................................60 Table 9 Hampshire County Structural Plan (Review) - Strategic policies for the coast.................... 63 Table 10 West Sussex County Structure plan (Deposit Draft) - Shoreline Policies for the Coast. 64 Table 11 Strategic and local gaps..................................................................................................................