\ o ( O lM
NRA
National Rivers Authority Anglian Region
LINCOLNSHIRE SHORELINE MANAGEMENT PLAN
STAGE 1 - SUMMARY
AUGUST 1995
POSFORD |g| DUVIVIER
Rightwell House Bretton Centre Peterborough PE3 8DW \>t>c
E n v i r o n m e n t A g e n c y
Information Services Unit
Please return or renew this item by the due date
Due Date ENVIRONMENT AGENCY INTRODUCTION' INTRODUCTION TO SHORELINE MANAGEMENT PLANS
A Shoreline Management Plan is a document which sets out a strategy for coastal defence for a specified length of coast. The strategy takes into account the natural coastal processes, human influences, land use and other environmental matters.
Shoreline Management Plans are in progress or are to be undertaken for the entire coastline of England and Wales. In order to reduce this coastline to manageable lengths it has been divided into eleven "sediment cells". A cell is defined as a length of coastline which is'relatively self-contained as far as the movement of sand or shingle is concerned and where interruption to such movement should not have a significant effect on adjacent sediment cells. In many cases the sediment cells are too large for the production of Shoreline Management Plans and have been divided into "sub-cells".
In June 1995 the Ministry of Agriculture, Fisheries arid Food (MAFF) published guidance notes on the preparation of Shoreline Management Plans. These notes define the geographical boundaries for the sediment cells and sub-cells derived by HR Wallingford and set out procedures for the production of a Shoreline Management Plan.
Sources of Information:
- Shoreline Management Plans: A Guide for Coastal Defence Authorities, MAFF 1995 - Coastal Management: Mapping of Littoral Cells, HR Wallingford, Report SR 328, January 1993 LINCOLNSHIRE SHORELINE MANAGEMENT PLAN
Introduction
The Lincolnshire coast between Donna Nook and Gibraltar Point is part of sediment cell 2 which extends from Flamborough Head to The Wash. It has been designated sub-cell 2c and is bounded to the north by sub-cell 2b: Immingham to Donna Nook and to the south by sub-cell 2d: Gibraltar Point to Snettisham.
The National Rivers Authority, Anglian Region (NRA) is the local coastal defence authority for the Lincolnshire coast and as such is responsible for operating and coordinating the Shoreline Management Plan. The NRA appointed Posford Duvivier as their consultants in January 1995, to undertake the preparation of the Lincolnshire Shoreline Management Plan.
The NRA are also responsible for the development of Shoreline Management Plans for the adjacent lengths of coastline.
Objectives of the Plan
The main objectives in developing the Plan are to:
■ improve understanding of the coastal processes operating within the sediment cell;
■ ' predict the likely future evolution of the coast;
■ identify all the assets within the area covered by the Plan which are likely to be affected by coastal change;
■ identify the need for regional or site specific research and investigations;
■ facilitate consultation between those bodies with an interest in the shoreline.
The main objectives of the completed Plan are to:
■ assess the range of strategic coastal defence options and agree a preferred approach;
■ outline future requirements for monitoring, management of data and research related to the shoreline;
■ inform the statutory planning process and related coastal zone planning;
■ identify opportunities for maintaining and enhancing the natural coastal environment, taking account of any specific targets set by legislation or any locally set targets;
■ set out arrangements for continued consultation with interested parties.
Procedure for Production of the Plan
The Lincolnshire Shoreline Management Plan is being developed in two stages. Stage 1 deals with the collection and presentation of data. Stage 2 deals with the integration of all information and views and, together with consultation on the preferred options, will lead to the production of the coastal defence strategies. t
Stage 1
The aim of this stage has been to gather and analyse information on the following key issues:
■ coastal processes
■ coastal defences
■ land use and the human environment
■ natural environment
During the work on the first stage a scoping document was issued to over 100 interested parties to gather information and to advise them of the project (a list of those consulted is included at the end of this document).
This document provides a summary of the data collected during the first stage and comprises 17 maps accompanied by short descriptions of the information presented and the source of the data. The maps included in the document are listed in Table 1.
One of the purposes of the first stage is to review the data collected and set objectives for the management of the Lincolnshire shoreline. These objectives will form the, basis for the appraisal and development of the strategic coastal defence options in Stage 2 of the Plan. The draft management objectives are listed after Map 17.
Stage 1 Consultation
This summary document has been sent to those who expressed an interest in the development1 of the Lincolnshire Shoreline Management Plan following the issue of the scoping document in March 1995. In addition to this summary, a more detailed report has been prepared and this document is available, on request, from Posford Duvivier.
The NRA’s consultants, Posford Duvivier, invite comments on the data contained in this summary document together with the submission of further information which may have been omitted and is relevant to the development of the Plan.
Future Work (Stage 2)
Following a period of consultation on this document the following steps will be undertaken in Stage 2:
■ appraise strategic coastal defence options ;
■ consult on the preferred strategic coastal defence options ;
■ compile the Plan
Sources of Information:
- Shoreline Management Plans: A Guide for Coastal Defence Authorities, MAFF 1995 TABLE 1 INDEX TO MAPS
Map No Title No of Sheets
1 Introduction to Lincolnshire Coast 1
2 Sea Bed Contours 1
3 Sedimentology 1
4 Geomorphology 1
5 Beach Sediment Sizes 1
6 Shoreline Evolution 3
7 Wave Conditions 1
8 ; Tidal Conditions 1
9 ' Net Longshore Transport 1
10 Coastal Defences 3 i i : Land Use 3
12 Planning Framework 1
13 Commercial Fishing Activities 1
14 Tourism and Recreation 1
15 ; Habitats 1
16 : Conservation Sites 1
17 Management Units 1 GLOSSARY
Astronomical Tide The tide levels and flows which would result from gravitational effects eg. of the Earth, Sun and Moon, without any meteorological influences. Beach Nourishment The importation of material to supplement the existing beach (also known as beach recharge/replenishment/feeding).
Bedload Current Residual The difference in the capacity of the flood and ebb tidal flows to transport material along the seabed.
Chart Datum The level to which both tide levels and water depths are reduced on marine charts. On UK charts, this level approximates to the predicted lowest astronomical tide level (LAT).
Detached Breakwaters Coastal structures lying parallel to, but not connected to the shore. They are generally constructed from imported rock or concrete units placed on the sea bed. Drift Divide A point where the orientation of the coast changes abruptly and beach material is moving away ftom the point.
Ebb Period when tide is falling. Often taken to mean the ebb current which occurs during this period. Fauna Animals Flood Period when tide is rising. Often taken to mean the flood current which occurs during this period.
Flora Plants Geomorphology The study of landforms and landforming processes. Groynes Coastal structures lying at right angles to, and connected to the shore. They may be constructed from timber, concrete, steel sheet piles or rock. Hard Defences Defences that tend to confront and resist the natural coastal processes, eg, seawalls. Hinterland Boundary The landward boundary of the Lincolnshire Shoreline Plan. Local Plan A document which sets out the policies at a district level. Longshore Transport Movement of beach sediments approximately parallel to the shoreline. Also known as longshore drift. Management Objectives Objectives for the management of the shoreline. These objectives form the basis for the appraisal and development of the strategic coastal options. Management Unit A length of shoreline with coherent characteristics in terms of both natural coastal processes and land use. Neap Tide Tides of small range which occur twice a month (when the moon is in quadrature).
Offshore Boundary The seaward boundary of the Lincolnshire Shoreline Management Plan. Planning Policy Guidance Notes prepared by the Government to provide guidance to local authorities and others on policies and the operation of a planning system. Revetment A sloping surface of stone, concrete or other material used to protect an embankment, natural coast or shoreline against erosion. Residual Life The number of years the defence is estimated to last before its integrity is compromised as a result of progressive deterioration.
Sea Walls Solid coastal structure built parallel to the shoreline. Scoping Document The document issued to interest parties at the start of the first stage in the production of the Lincolnshire Shoreline Management Plan. Sediment Cell A length of coastline which is relatively self- contained as far as the movement of sand or shingle is concerned. Sediment Sink A point on the coast where material is moving towards the point and beaches are tending to build up. Shoreline The interface between the land and the sea. Shoreline Management Plan A document which sets out a strategy for coastal defences for a specified length of coast.
Significant Wave Height The average of the highest one third of the waves
Soft Defences Defences designed to work with ratehr than against the natural coastal processes. They tend to absorb rather than reflect wave energy and be dynamic rather than static eg. beach nourishment. Spring Tide Tides of large range which occur twice a month (when the moon is new or full). Standard of Defence The return period of the storm event that the defences are able to provide protection against.
Strategic Coastal Defence Generic term for any coastal management strategy eg. do Option nothing, advance, retreat or hold the existing coastal defence line. Structure Plan A document providing strategic policies and the statutory planning framework for the county.
Summary Document This document which provides a summary of data collected during the first stage in the production of the Lincolnshire Shoreline Management Plan Supporting Document The document prepared during the first stage in the production of the Lincolnshire Shoreline Management Plan, It provides background to the information contained in the summary document.
Surge Change in water level as a result of meterological conditions (wind, high or low atmospheric pressure). Tidal Range The vertical difference between high and low water. Tidal Current Residual The difference between the flood and ebb tidal flows.
ABBREVIATIONS
CCA Coastal Conservation Areas ELDC East Lindsey District Council ESFJC Eastern Sea Fisheries Joint Committee
GCRS Geological Conservation Review Site
LCC Lincolnshire County Council MAFF Ministry of Agriculture, Fisheries and Food NCC Nature Conservancy Council NNR National Nature Reserve NRA , National Rivers Authority (Anglian Region) OD . Ordnance Datum
PPG [Planning Policy Guidance RIGS ! Regionally Important Geological Site RNLI ! Royal National Lifeboat Institution
RSPB ' Royal Society for the Protection of Birds SAC Special Area of Conservation SMP Shoreline Management Plan SNCI Site of Nature Conservation Importance SPA Special Protection Area
SSSI Site of Special Scientific Interest
MAP 1 - INTRODUCTION TO LINCOLNSHIRE COAST
Plan Boundaries
The Lincolnshire Shoreline Management Plan covers approximately 50km of coast between Donna Nook to the north and Gibraltar Point to the south.
As noted in the Introduction this length of coast has been designated sediment sub-cell 2c. The boundaries for this sub-cell were determined by HR Wallingford from an assessment of the movement of material along the coastline. The northern limit at Donna Nook is considered as a "drift divide" boundary ie. a point where the orientation of the coast changes abruptly and beach material is moving away from the point. It is also thought that the beaches at this location are being fed by the nearshore sand banks. TTie southern limit at Gibraltar Point is considered as a "sediment sink" ie. a point on the coast where material is moving towards the point and beaches are tending to build up.
In addition to these coastline boundaries it is also necessary to establish hinterland and offshore boundaries for the Plan.
All land below the +5m OD contour is at risk of flooding. This constitutes a large area which extends up to 15km inland of the coast. From practical considerations the hinterland area defined for the purposes of the Plan is broadly based on the extent of flooding that occurred in 1953. This area has, however, been extended to include areas which, though not flooded, were isolated by flooding. It has also been extended, in places, to provide a minimum width of 1km from the coast. The hinterland boundary is shown on Map 11.
The offshore boundary has been located at the - 20m contour so that the seabed features influencing the coastal processes along the Lincolnshire coast are included within the Plan. These include the Inner Dowsing Sand Bank and the sand bank systems north of Mablethorpe and south of Skegness. This boundary is shown on Map 2.
Material is currently being extracted from an area of the seabed approximately 5km southeast of the Inner Dowsing Sand Bank for the nourishment of the Lincolnshire beaches. It has, however, been established that these dredging operations will not affect the coastal processes along the Lincolnshire coastline and the offshore boundary has therefore not been extended to include this dredging site.
Description of Coast
The Lincolnshire coast is formed from alluvial deposits composed mainly of sand but pockets of mud and fine material also occur. These deposits are underlain by clay. Wide sandy beaches exist to the north of Mablethorpe and to the south of Skegness and these are subject to accretion. Between Mablethorpe and Skegness the beaches comprise a thin layer of sand and are subject to erosion and steepening.
The coastal defences between Mablethorpe and Skegness are predominantly man-made sea walls whereas those to the north and south comprise natural sand dunes and salt marshes.
The defences provide flood protection to an extensive area of low lying coastal plain. This area extends for up to 10km landward of the coast and much of the land is at or around mean sea level. Although the area is predominantly agricultural the coastal fringe is extensively used for recreation and tourism and many of the towns are popular holiday resorts in addition to being residential and commercial centres. Tourism is a vital component of the coastal area and it is estimated that East Lindsey district generates over £200 million in tourism spending each year with an estimated 5 million day visitors coming the area.
Flooding History
The Lincolnshire coastline is very much a battleground between the land and the sea and has a long history of flooding. The most notable recent event occurred in January 1953 when low atmospheric pressure and high winds raised the predicted spring tide levels along the coast by 2 to 2.5m. These high water levels combined with very rough seas resulted in multiple breaching of sea defences between Mablethorpe and Skegness and led to the loss of 41 lives and major damage to property.
The defences, rebuilt after 1953, were able to withstand events that occurred in 1976 and 1978. During these events the defences were overtopped but no breaches occurred.
The defences are still subject to ongoing major capital works. A study to examine the most appropriate strategy for the coastline between Mablethorpe and Skegness was completed in 1991. This led to a decision by the NRA to adopt a strategy of beach nourishment over the next fifty years. In addition to the initial nourishment, the strategy will require both the renourishment of the beaches and the maintenance of the existing sea walls.
Site work on this project started in 1994 and is due for completion in 1998. SUB-CELL 2b
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This map illustrates the bathymetry of the sea bed off the Lincolnshire coast. The contours are in metres relative to Admiralty Chart Datum which at Skegness is 3.75m below Ordnance Datum.
The seabed is relatively flat with sand banks providing the only notable features. Nearshore sand bank systems exist north of Mablethorpe and to the south of Skegness. Further offshore, a sand bank occurs at Inner Dowsing. This bank is orientated NW-SE ie. parallel with the tidal flows, and is around 15m higher than the surrounding seabed. The importance of these sand banks, with particularly those adjacent to the coast, is discussed in Map 4.
The map also indicates the location of pipelines serving the gas terminal at Theddlethorpe and the sewage outfall south of Ingoldmells Point.
The offshore boundary of the Plan (-20m sea bed contour) is also shown on this map. The location of this boundary is discussed in Map 1.
Sources of information:
- Admiralty Chart No 1190 - Admiralty Tide Tables, 1995 Key: Depth Contours
20m
,0m 5m / 30m iortna Nook
{ j 10m 1h, nfrrccstes ~ # 0m Contours are in metres below 0 SALTFLEETl Admiralty Chart Datum OVERFALLS Note: At Skegness Admiralty Chart Datum is 3.75m below S&hfltn. Ordnance Datum
10m PROTECTOR OVERFALLS OFFSHORE BOUNDARY
■ r / R ltfltffe SLPftei ETHORPE^ m s - — " Gas Pipelines
THRUSTHORPE OVERFALLS
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POSFORD <2 National Rivers Authority Anglian Region MAP 2 sheet 1 of 1 August 1995 NRA DUVIVIER MAP 3 - SEDIMENTOLOGY
This map defines the character of the deposits on the seabed.
Offshore the deposits are predominantly gravels, sandy gravels, gravelly sands and sands. The majority of the seabed is gravelly, with sand deposits occurring at Inner Dowsing. In general, the gravelly deposits are less than lm thick whilst sand deposits are over lm thick and locally on Inner Dowsing Bank are up to 12m. These deposits are mostly underlain by a stiff, stony clay.
Inshore there are sand banks north of Mablethorpe and south of Skegness. Sand deposits are also found at Mablethorpe and Skegness but the area between these locations consists predominantly of clays with sand found only at the shoreline.
Sources of Information:
- The Marine Sand and Gravel Resources off the Humber, Technical • ..'92/1, British Geological Survey, 1992. - Admiralty Chart No 1190 - Mablethorpe to Skegness Sea Defences, Strategy Study, NRA 1991 Sediments
Gravel
Gravelly Sand
DONNA NOOK GSh - Gravelly Shingle SG - Sandy Gravel SShG * Sandy Shingly Gravel SSh - Sandy Shingle 'N orth, S - Sand Som&rjcotas Sand Depth 0 - 2m SALTFLEET OVERFALLS Sand Depth 2 - 4m
S altfle et Sand Depth 4 - 6m PROTECTOR OVERFALLS Sand Depth 6 - 8m
S*lrtleett>*,St Clarrwnt THEDDLETHORPE OVERFALLS
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INNER DOWSING DATA SOURCE
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B: The Manne Sand and Gravel Resources off the Humber, Technical Report WB/92/1, BGS 1992 iveftbniHB Sta / ji t A ll Seir»t» T p / I f C: Admiralty Chart No. 1190 4 Grtrahar
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LINCOLNSHIRE SHORELINE MANAGEMENT PLAN SEDIMENTOLOGY
POSFORD National Rivers Authority Anglian Region MAP 3 sheet 1 of 1 August 1995 NRA DUVIVIER MAP 4 - GEOMORPHOLOGY
The map illustrates the main beach, nearshore and offshore geomorphological features.
Beach and Nearshore Geomorphology
The Lincolnshire coastline may be divided into three different zones, these are:
■ Donna Nook to Mablethorpe ■ Mablethorpe to Skegness ■ Skegness to Gibraltar Point
North of Mablethorpe the beaches are wide and shallow and consist of a thick layer of fine sand backed by salt marshes and dunes. The zone between Mablethorpe and Skegness has narrow relatively steep beaches with little sand cover to the underlying clay. The final zone to the south of Skegness again has wide shallow beaches with abundant sand backed by salt marshes and dunes.
It is evident from the condition of the beaches that those to the north of Mablethorpe and south of Skegness are accreting whilst those in the middle zone are eroding. This differing behaviour is influenced by the nearshore sand banks which both reduce the wave energy reaching the coast and also provide a source of sand to the beaches. The sand banks north of Mablethorpe result from the dynamic balance of ebb and flood tidal flows from the Humber estuary and those off Gibraltar Point from flows in the entrance to The Wash.
The sand bank system south of Skegness is migrating southwards (over 4km this century) and this length of the coast is therefore losing a source of sediment and being exposed to increased wave energy. As a consequence the interface between eroding and accreting beaches is also moving southwards. This tendency is, however, likely to be counteracted by the beach nourishment scheme (see Map 10) which will provide a new source of sand.
A further cause of beach lowering between Mablethorpe and Skegness is the erosion of the underlying clay layer. During a storm the thin sand layer is largely removed from the upper beach and transported offshore. This exposes the clay layer to wave attack. The clay is eroded, transported (in suspension) away from the beach and effectively lost. Following the storm, sand gradually returns to the beaches but at a lower level as some of the clay has been permanently lost.
Offshore Geomorphology
The main offshore geomorphological feature is the Inner Dowsing Sand Bank. This bank has been formed by differences in the ebb and flood tidal flows. Additionally on some sandy areas adjacent to the bank, sand waves have been formed by the strong tidal currents. These waves can be up to 8m high.
Sources of Information
- The Sand and Gravel Resources off the Humber, Technical Report WB/92/1, British Geological Survey, 1992 - Admiralty Chart No 1190 - Atlas of Nature Conservation Sites in Great Britain Sensitive to Coastal Oil Pollution, Nature Conservancy Council, 1990. - Mablethorpe to Skegness Sea Defences, Strategy Study, NRA, 1991 - Offshore Sand Banks, Dugdale, 1995 (report prepared for NRA) Key: Geomorphological Features
Sand Dunes
m Saltmarsh
Sand Beaches
Offshore Sandbanks
Areas of Abundant Sand Waves
PROTECTOR OVERFALLS
THEDDLETHORPE OVERFALLS
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LINCOLNSHIRE SHORELINE MANAGEMENT PLAN GEOMORPHOLOGY
POSFORD (5 National Rivers Authority Anglian Region MAP 4 sheet 1 of 1 August 1995 NRA DUVIVIER MAP 5 - BEACH SEDIMENT SIZES
This map illustrates the typical grading of sand found on the beaches between Mablethorpe and Gibraltar Point.
The samples indicate that the beaches generally comprise fine to medium sand with a mean particle diameter (D^) of around 0.2mm. The grading of the beaches does, however, vary seasonally. In the winter months gravel is generally more evident as the rougher seas transport the fine sand offshore. In the summer months, when seas conditions are moderate, the beaches are able to rebuild and are generally covered with fine sand. It should be noted that the samples presented on the map were generally taken in August.
Sample E illustrates the grading of the sand used in the first phase of the beach nourishment scheme (see Map 10) which has a mean particle diameter (Djo) of 0.57mm.
Sources of information:
- Mablethorpe to Skegness Sea Defences, Strategy Study, NRA 1991 - Offshore Sand Banks, Dugdale, 1995 (report prepared for NRA) Beach Sediment Sizes
D10 D50 D90 t;i NATION DESCRIPTION (mm) (mm) (mm)
A Fine sand 0 07 014 8
Fin* / Medium B sand 008 0 25 75
Fine / Medium C sand 011 0 20 1.5
Fine / Medium D sand 0 08 0 25 75
Medium / Coarse E 026 0 57 2 7 sand
Fine sand F 007 013 02
Fine / Medium G • 0 32 - Sand
Note: The grading parameters are defined as follows D90: particle size exceeded by 10% (by weight) of sample. D50: Particle size exceeded by 50% (by weight) of sample. D10: Particle size exceeded by 90% (by weight) of sample. MAP 6 - SHORELINE EVOLUTION
Historical Evolution
This map describes the evolution of the Lincolnshire coastline and comprises three sheets which illustrate:
■ the position of the high water mark in 1880, 1900, 1950 and 1970 ■ the long term movement of the high and low water marks, and ■ beach level trends between Mablethorpe and Skegness
The information relating to the high and low water marks has been derived from Ordnance Survey maps which were last updated in the 1970’s. The long term movements are based on a comparison of maps prepared between 1850 and 1890 and those prepared in the 1970’s. They represent, therefore, mean trends over approximately one hundred years. Beach level trends have been derived from an analysis of beach profiles undertaken between 1960 and 1990.
The map indicates that the high water mark to the north of Mablethorpe and to the south of Skegness is advancing and that the beaches are accreting. Between Mablethorpe and Skegness the high water mark is effectively held at about the line of the coastal defences. In contrast, the long term retreat of the low water mark indicates that the beaches over this length are steepening and eroding.
On the map it is noted that at Skegness the interface between retreat and advance had moved southwards in recent years. It is believed that this is due to the southern migration of the nearshore sand banks which has increased the exposure of the beaches to wave energy.
The beach level trends indicate that the beaches between Mablethorpe and Skegness are falling typically at a rate of 2cm/year, again indicating erosion along this length of coast. It is believed that these falling levels are due in large part, to the erosion of the underlying clay during storm events. This process is discussed further with Map 4.
Future Evolution
It is likely that the trend of accretion will continue between Donna Nook and Mablethorpe.
The NRA are currently undertaking a scheme to nourish the beaches from Whitehouse Corner (1km south of Ingoldmells Point) to Mablethorpe by the importation of sand. This will result in an immediate advance in the high water mark. Longshore transport will, however, continue to cause erosion and the NRA will undertake periodic renourishment schemes in order to maintain the beaches.
The current trend of erosion immediately to the south of Skegness is likely to be reduced and possibly reversed by the beach nourishment scheme which will restore the supply of sand. The increased southerly transport of sand may result in the return of wide sandy beaches along this length and also enhance accretion rates further south at Gibraltar Point.
Sources of Information
- Anglian Shoreline Management System, NRA - Anglian Coastal Management Atlas, Anglian Water, 1988 - Mablethorpe to Skegness Sea Defences, Strategy Study, NRA 1991 - Offshore Sand Banks, Dugdale, 1995 (report prepared for NRA) K G y. Direction of Long Term Movement of High Water + and Low Water Marks N. LW I < \ rv X Historical Evolution of High Water Mark . V" w . i
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LINCOLNSHIRE SHORELINE MANAGEMENT PLAN SHORELINE EVOLUTION
[POSFORD £ National Rivers Authority Anglian Region MAP 6 sheet 1 of 3 August 1995 NRA Id u v iv ie r Hfcl.«l4Y ^C*rr«:» ^ . *■ v . oiV'M^W fe-leQ^ 'n, 4® Direction of Long Term Movement of High Water A and Low Water Marks .BLETHOR Retreat
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Advance rtrq;h« W '* Historical Evolution Pepi*r>#^ jthorpe of High Water Mark '*%■ Eart> 0r m ^ :
Recent Trends in Beach f Levels jMtVon on Sea Position 30 year 10 year (1960-90) (1980-90)
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'U *” rPt,*JT o o « +1.0* M n d i b Y ^ ^ r / 9 10 -0.5A -1.0* 11 -3.0 -15 to -20A / O v * ^ '4 & r n ih^riV^' V.7 / X A r / wfiE 12 -0.5 +4.0A -10.0A V'ib^is Ew 13 -2.5 Assfeiby tA :/ • ' I P fl ^I o iw t n | # ; .'A* Fm 14 -2.0* -6.0A 15 -1.0* -2.0A >. ; $ S V r - 4 ^ Trends are given in cm/year Dfvt))> Fn / Negative values indicate falling levels * Profile steepening t / |;PT^HuttOft % I I * A Profile flattening______.i'^S^k-lSns *.....ml 1 3 r \ « it The j \ 1 Thprloy2L Ittatciot J k W V f Anderby J f c . F * A'/OS&H' r, Vr Jtfc L ..... r ^ r . , y ...... /iWAv;;.. :■ / 4 \ >kA ! / x > iV y*5* t / ,■ \ Mum by ' A.r't£,rr*\>,*Pf. / K X F...L WU" H«: T rftsy^si w A s r \ M:r4c:«b«m'1'-V ,x^^'Authoro«• A A u th o rp * ■•!, \ vAi* « ") jT^CuftibervvDrth £.:^> ■ - M U I H Jm ! r hosv i ; a — ^ u /I ’ y \ Cftf'v i\ 4 4 Bont Ciidyiwnryr F.ISO" F^I tj JP WWfcKfi ^fc» o r'n>-' * “y u tc j .a z jt "T V H^ls^y5^^ ^ Curt^bttrvwsftlt ings \ I « ...../-ft...... Ig.^r. "r ,___ ...... *---- ■;; y i Slackbotm* S lootnby fend -j&Ppf / i - n — - ;f * r r ,f Hi.i*4or Ho JJ,r ' !• '-•fi.Tt. '«. L / <’/ \ i i v "V ' # / ____\V REPRODUCED FROM ORDNANCE SURVEY MAPS WITH THE PERMISSION OF THE CONTROLLER OF H.M S O CROWN f—“TT-f— | COPYRIGHT RESERVED LICENCE Nfl. 546528 K ' r? j •rt*nct«4£* ,;M iiniwiumw / _____ i LINCOLNSHIRE SHORELINE MANAGEMENT PLAN SHORELINE EVOLUTION POSFORD <2 National Rivers Authority Anglian Region MAP 6 sheet 2 of 3 August 1995 NRA I2IDUVIVIER Retreat Mixed Wi lt HOiWAa idp V ” •Y Ji ....■:■•••/•• Sm...... / i iSsfili Advance '/.'fctlrflOuM ,:’ri^ ite 2 JSffii Sfc«9n«s *C Wi;.lr Recent Trends in Beach .VMfiAW *- ‘ Levels “TsttVJVWS Position 30 year 10 year j Jtailha/ (1960-90) (1980-90) .a 8 u rgtt M a rrh i V'*'Y, ___ L .. riXV h o : / V » '^ "-V ■ •A !;••< ** Trends are given in cm / year Negative values indicate falling / 7 ko« levels. * Profile steepening A Profile flattening .___ \i ^W-iKfeor P*i i Note 1: ------7 y WainfiwtSaniJ TT 'x$r i \ ,:^ ' 0.5 1 Kilometres REPRODUCED FROM ORDNANCE SURVF MAPS WITH THE PERMISSION OF THE CONTROLLER OF H M S O CROWN COPYRIGHT RESERVED LICENCE Na. 548529______ LINCOLNSHIRE SHORELINE MANAGEMENT PLAN SHORELINE EVOLUTION IPOSFORD £ National Rivers Authority Anglian Region MAP 6 sheet 3 of 3 August 1995 NRA I DUVIVIER MAP 7 - WAVE CONDITIONS This map presents inshore wave conditions along the Lincolnshire coast. Wave roses are shown for seven points along the coast. They illustrate the 1 in 1 year and 1 in 100 year significant wave height for directions between 0° N and 120°N. The wave heights have been calculated using wind data from the Dowsing Light Vessel and take into account the effect of the sea bed on the waves as they approach the coast. Statistical techniques have been used to determine the 1 in 1 year and 1 in 100 year wave heights. The significant wave height is defined as the average of the highest one third of the waves and has been found to approximate to the visual estimate of wave height that would be obtained by an experienced observer. The wave roses indicate that the exposure of the coastline to wave energy reduces significantly to the south of Skegness. This reduction is due to the sheltering effect of the offshore sand banks. The roses also indicate that the largest waves approach the coast from the north-east. Inshore along the Lincolnshire coast wave action is the primary cause of the longshore transport of sand. The annual wave climate therefore determines the net direction and rate of transport discussed on Map 9. Sources of Information - Mablethorpe to Skegness Sea Defences, Strategy Study, NRA 1991 (this work has been extended for the SMP to cover additional points along the Lincolnshire coast). Key: Wave Data Wave roses give direction and height of annual and 1 in 100 year significant wave. r CM m jpj ' jHonng Nook \ i1 Denotes annual and V-j extreme significant wave v / heights of 5.2 and 7.4 m respectively. rrc. ’ivruii It&Seirarpotes \ * Output point SaltflM t 00k* MIL Thedfllsth'crpa St Hal*?i imoldb Tltisddliji h*ps Z1J J . . Carlton ::MA9LETH0RP£ •Truslhorpe Strwfeby Sutton on Sea Malt W f f Is Mai Aut»w»e j-'Sandtl.wds ^ • 5. 72 14 . . . South Hurrofi-"' rhoresby ivVHterby Creek V / *, A T 1 ^^arl^hoQcJI Vr Muirby •• )l /^gv Auttiorpe \\ ^ —^Cumber^rih/Tv / / V iV H W V I Chapel St Lsonarrfs ; A \ * )K Sioothbv wiup In £W.\ . 7 '7 ^ f % ^ c / / ? ? e «5 PtWrf ^C*ndle?by Ofby mf\ a Itip nJH o leg« te 4$la! yntfln A ' , .. Saints L lW - 5 * ^ ftJL i W i r . n / j ;K£GN£SS ., j Crofi^r-^ v * [borpa * Swcr.Qft ..Jmnrpe-Fen^>M Croft Afo$a/ri Bvnntimm Sta W liftffiet Bin) Wainfiest All Seims GibraH ai 2f 17. . . . & #1 IFROM ORDNANCE ! i .f g i WITH THE PERMISSION OF THE a in fleet : . 3? $ #" ER OF H.M.S.O. CROWN ’RESERVED !No 548529 Kilometres I' LINCOLNSHIRE SHORELINE MANAGEMENT PLAN WAVE CONDITIONS POSFORD (5 National Rivers Authority Anglian Region MAP 7 sheet 1 of 1 August 1995 NRA 121DUVIVIER MAP 8 - TIDAL CONDITIONS This map illustrates three sets of parameters: ■ tide levels ■ tidal currents ■ current residuals Tide Levels A table of tide levels at Skegness is shown on the map. It indicates that the tidal range, the difference between high and low water levels, is 6m and 2.8m on a spring and neap tide respectively. Levels are given relative to Ordnance Datum (OD). These are predicted astronomical tide levels and do not take account of surges which can have a significant effect. Surges are related to the weather and, under extreme conditions, can increase astronomical tide levels by over 2m. Tidal Currents A table of tidal streams (in knots) is also shown on the map. The table indicates that the rising, or flood, tidal currents flow approximately north to south and that the falling, or ebb, tidal currents are from south to north. The tidal currents are moderate with peak flows on a spring tide of approximately 2 knots (1 m/sec). Current Residuals The map also illustrates the direction of the tidal current residuals at a number of locations. Tidal current residuals are the net differences between the flood and ebb flows. Inshore the tidal residuals do not contribute significantly to the movement of sediment as transport in this zone is dominated by wave action. However, further offshore these residuals are the primary cause of sediment movement and control the development and changes to the offshore sand banks. Sources of Information: - Admiralty Chart No 1190 - Admiralty Tide Tables, 1995 - Hydrodynamics and Sediment Dynamics of the Wash Embayment, Eastern England. Ke, Evans and Collins (in press) - Offshore Sand Banks, Dugdale, 1995 (report prepared for NRA). A Key: onns Nook Tidal Current Residuals N k Direction of Tidal c A Current Residual o i 4 I (Length of arrow does not denote magnitude of ■ residual) 1 0 Z 2 £ t h iv A\ Gr»at Cailtan ( 7 ypjstlicirpe 0 o ton on Sea \ 0 ] \^'VW(A X^Jbs*0 *X&n o ' V 2 # < Saieby \ rSdwtti, Thorssby^N J A " y \ far!$sthcirpa ' VrJ) /%, ^ \ \ % ^eil \’> —'^robarwofth/K j j '^tuiwby il i I Chattel St Leonards x' * * " " i gt on M -- SlQothby / pa Tide Levels at Skegness Level O o Condition E ingoldmelis Mean High Water Springs 3.15 Mean High Water Neaps 1.55 Mean Low Water Neaps -1.25 Mean Low Water Springs -2.85 [ ■■ ,, -\ Tidal Streams Referred to HW at Immingham - ^Geographical ^ -53® 19” O' N 53° 09" Hours ▼ Position ▼ A 0° 34” O' E ♦ D 0° 30" -6 358 1.1 0.6 352 0.4 0.2 -5 328 0.5 0.2 326 0.2 0.1 -4 216 0.8 0.4 205 0.9 0.5 -3 191 1.5 0.8 199 2.1 1.1 0*. I f- -2 185 1.8 0.9 195 2.1 1.1 G-iufflftfcr § -1 185 1.6 0.8 188 1.3 0.7 £ & High 0 177 1.1 0.6 171 0.7 0.4 ■ v # s Water 0 0 & •V +1 135 0.6 0.3 050 0.6 0.3 ■ NN *:& o o .$ & oj(A aj +2 032 0.7 0.3 021 0.9 0.5 *\N 'F Kilometres ro 13 * cr oc +3 013 1.2 0.6 016 1.4 0.7 +4 009 1.5 0.8 012 1.9 1.0 riH! ;u* +5 006 1.5 0.8 007 1.6 0.8 % V,6 +6 001 1.2 0.7 000 0.6 0.3 REPRODUCED FROM ORDNANCE SURVEY / / Frisk n^y Flats MAPS WITH THE PERMISSION OF THE CONTROLLER OF H.M S O CROWN > y . COPYRIGHT RESERVED LICENCE No 548529 LINCOLNSHIRE SHORELINE MANAGEMENT PLAN TIDAL CONDITIONS POSFORD National Rivers Authority Anglian Region MAP 8 sheet 1 of 1 August 1995 NRA DUVIVIER MAP 9 - NET LONGSHORE TRANSPORT This map illustrates the direction and relative magnitude of the potential net longshore sand transport along the coast. The potential net longshore transport is the volumetric drift of sand that would occur on average over the period of one year. The information shown on the map is as follows: ■ the red arrows are from longshore transport calculations completed for the design of the Mablethorpe to Skegness beach nourishment scheme ■ the black arrows are from longshore wave energy calculations completed for the Anglian Coastal Management Atlas. Both sources of information used long term wind records to determine an annual wave climate for calculating longshore transport/wave energy. Overall the coastline is subject to a net southerly transport of sand with rates increasing from Mablethorpe to Skegness. As a consequence, more sand is transported out of this length than arrives at Mablethorpe and hence the beaches are eroding. In practice, the full longshore transport potential is not realised because of a lack of sand on the beaches. This situation will, however, change after the completion of the beach nourishment scheme (see Map 10) when there will be sufficient sand to sustain this southerly transport and the beaches at Skegness will begin to accrete. To the north of Mablethorpe and to the south of Skegness the longshore transport remains in a southerly direction but is complicated by the presence of nearshore sand banks. These banks both shelter the beaches from waves and provide a mechanism for the onshore and offshore transfer of sand. The significance of these banks is discussed further on Map 4. Sources of Information: - Anglian Coastal Management Atlas, Anglian Water 1988 - Mablethorpe to Skegness Sea Defences, Strategy study, NRA, 1991 - Mablethorpe to Skegness Sea defences, Beach Nourishment Scheme, Phase 2 Design, NRA, 1995. | Key: Longshore Transport Direction and relative H magnitude of potential net longshore transport Direction and relative magnitude of potential net longshore wave energy As above but direction lw«wft||>...... can vary from year to year \ f l \ &onna Nook Note: See accompanying text for background on I I i S^, longshore transport data shown on map Jp I % V | ^ L wNMh, . V 'vUQLSomercotes X & \ { f r i r i \ Sal Sk brooks B£r*%ySakfliei Sr Cltroant S a t ™ t b y ^ l LSai’ints., j Uf Ot Pj3 )■ v 1 '-1 ■ // St Helert fioldbv r / , r ' y' TheJdt BthD*Tie erminsl ** Ali^ainut !? n t,v , / iO o J Carlton MABLETHQm Gfly on Iv M m h y S ia s&'TfUStfiorpeI x ^Sutton an Sea ^miflsnfe t?. Markhv \ \ j South / \ ‘horeiby^ P* ^Aftd&tby Cre\ X < « r HD f Afiderbvf Parlesthatpie &Mumby ••v- Airthorpe ftow sonards AViHwvtilrsr r Sloothb> Skendl&by Irjgoldmeifs I ■v| 'Ipg o :iX'T'e/j.MPtO in i Scr mb* la fii f,by wsh SWIS 8Y pjtn Ashby ,5&a thorns ton Ho teeping ton isints KEGNESS Ssstrbft horix FMd)* REPRODUCED FROM ORDNANCE SUR MAPS WITH THE PERMISSION OF THE CONTROLLER OF H M SO. CROWN siofldet All Samts COPYRIGHT RESERVED Kilometres LICENCE No 548529 s c LINCOLNSHIRE SHORELINE MANAGEMENT PLAN NET LONGSHORE TRANSPORT POSFORD National Rivers Authority Anglian Region MAP 9 sheet 1 of 1 August 1995 NRA$ 121 DUVIVIER MAP 10 - COASTAL DEFENCES The coastal defences along the Lincolnshire coast may be broadly divided into the following lengths: ■ Donna Nook to Mablethorpe ■ Mablethorpe to Skegness ■ Skegness to Gibraltar Point The map, which comprises three sheets, illustrates the types of defence along each length. Further details are given below and in Table 2 which also identifies two further parameters: the standard of defence and the residual life of the defences. The standard of defence is defined as the return period of the storm event that the defences provide protection against. The residual life of the defences is the number of years until the integrity of the structure is compromised as a result of progressive deterioration. The map also defines the frontage numbers used by the NRA to identify lengths of defence. This numbering system has been adopted in Table 2. North of Mablethorpe (sheet 1) Over this length the defences are dunes between Mablethorpe and Saltfleet and an embankment, fronted by dunes, between Saltfleet and Donna Nook. Mablethorpe to Skegness (sheets 1,2 & 3) For the majority of this length hard defences have been constructed. These include concrete seawalls, some with either rock armour or concrete units as toe protection, and revetments. These structures are, in general, fronted by short timber groynes. The NRA are currently undertaking a nourishment scheme involving the placing of sand on the beaches from Whitehouse Corner, approximately 1km south of Ingoldmells Point to Mablethorpe. Work on this project began in 1994 and is due for completion in 1998. This scheme will provide a 1:200 year standard of flood defence. South of Skegness (sheet 3) To the south of Skegness the defences are generally dunes. Sources of Information: - Mablethorpe to Skegness Sea Defences, Strategy Study, NRA, 1991 - Anglian Shoreline Management System, NRA - Sea Defence Survey, NRA, 1990-91 ■ I - . " T Key: Types of Defence ■,p-.rxrrrrir.-^i»-J i-rmna Ncjok. Concrete seawall with rock •■'va i .; * armour toe. Concrete seawall Natural dunes s? Ho.rr-o' f.h 3»; r.Mjpr-, M, Revetment ! ^ - * Concrete seawall with - — o concrete armour units at toe |[ •TO.JND/thx- Clay embankment \ «, U-. 1 r» F29, F30 NRA Frontage numbers .1 ^ Kilometres \'. ?.1k Jftrij*A 1 * r' ? ^6**^ Pm* OK"..“V $Vi3^rcfe k«^CT”.r^ jf'np Unite ‘r North Fnd * ^ N '*- NRA Frontage Numbers ) ) f \ ' ' MABL6TH0RPE / / w / j £<4F46 »fcl 1516 ...... ? \ MP/jC / A # J l jp * * * * ? \ >,''" fy«vi£ t lr c r t ’k / if / \ \ ^ frr J ' / / v*. 1 ~ " i v ^ ... 'Jg* ...... / ...... / "fa "*■" ^ V / / / H N \ F401 rhoip*’ $ o J •f/ f S ' \^ ! I Shid^rooKe^ SM#oo ,/ ’"' '*V..... /^ $out*.... Ou-,1 -F32 •<>' ®rr’9< mutton on Sea ' ^>-v . T x (>rim v > • -•> ^ X ^ T i • <•> r •-N '•>. ■> -.V : ro.d:. I oil orp,- • H-? ^ • <*v : •• ^ * a • r j ■ r oil rin ...J > A ’. \ ^ j K . " An w r \ 4 Thr«6 Brxlyw \ V /r /U T ^^^fr^>^W .vUi. inrpa , .’i \ lS| ...rf&sf ...... 1 ...v...... F*. 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COPYRIGHT RESERVED / V " '• li 3: 4: 60^ LINCOLNSHIRE SHORELINE MANAGEMENT PLAN COASTAL DEFENCES POSFORD National Rivers Authority Anglian Region MAP 10 sheet 1 of 3 August 1995 NRA DUVIVIER TABLE 2 COASTAL DEFENCES Frontage Length Existing Type of Construction Location Standard of Estim ated No (m) Defence R esidual (years) Life (years) s r 5500 Natural Dunes Gibraltar Point to Lagoon Walk 200 - S2* 500 Concrete Seawall with Rock Armour Toe Lagoon Walk 100 40-60 S3* 300 Concrete Seawall Tower Esplanade to Amusement 100 40-60 Park 0.1 600 Concrete Seawall with Concrete Armour Amusement Park to Sea View 100 40-60 Units Pullover 0.2 & 0.3 1600 Revetment (Rock) Sea View Pullover to North Shore 100 40-60 Golf Course 1 830 Concrete Seawall Winthorpe to Carey House 200 6-7 2 . 450 Concrete Seawall Carey House to N of Jacksons 200 7-8 Com er 3 450 Concrete Seawall N of Jacksons Comer to Midpoint 200 35-55 Butlins 4 710 Concrete Seawall Midpoint Butlins to Whitehouse 190 7-8 Com er 5.1 300 Concrete Seawall Whitehouse Comer 45 20-31 5.2 500 Concrete Seawall Whitehouse Comer to Ingoldmells 20 40-60 Point 5.3 150 Concrete Seawall Ingoldmells Point 140 40-60 6 740 Concrete Seawall Ingoldmells Point to access S of 200 40-60 Vickers Point 7 390 Concrete Seawall with Concrete Armour Access S of Vickers to N of 100 40-60 Units Vickers Point 8 210 Concrete Seawall N of Vickers Point 200 40-60 9 450 Concrete Seawall with Rock Armour Toe S of Chapel Lake 100 40-60 10 440 Concrete Seawall with Rock Armour Toe N of Chapel Lake 100 28-41 11 510 Concrete Seawall with Rock Armour Toe Trunch Lane 200 24-38 12 1800 Concrete Seawall with Rock Armour Toe North of Trunch Lane 170 40-60 13 100 Concrete Seawall Chapel Basin 35 9-14 14 190 Concrete Seawall with Rock Armour Toe Chapel Point 10 24-38 15&16 380 Concrete Seawall North of Chapel Point 30 24-38 17 2030 Revetment Foxholes to S of Anderby Outfall 5 3-5 18 190 Revetment Anderby Sewage Works 150 3-5 19 360 Revetment Anderby Creek 200 5-8 20 790 Revetment Anderby Creek to Moggs Eye 175 0-2 21.1 730 Revetment Moggs Eye to Hutto ft Boat Ramp 200 40-60 21.2 1200 Concrete Seawall with Concrete Armour Huttoft Car Terrace 150 40-60 Units \ NRA Frontage Numbers ■ "ip£.'\ ■ ^ r |ii\ Types of Defence & -:3 Er ,tn.< \ Concrete seawall with rock I*i ^ yif 4f- armour toe. wktw i& : ^Vom B '^Cr^w, * Concrete seawall m .....r...... Natural dunes ii MABLETHORPE *L* SrU \ UM.&*.... Revetment ^jlMtbtet'd- w 5 4 ' ^ * Concrete seawall with move* if. » y F42 concrete armour units \M» at toe *? ■ % ...... s Clay embankment F40-1.ilhocpe F39 F29, F30 NRA Frontage numbers. Burrjbw'f J? ?&• * & / / \ WAflii&THq&r A,\O J$fTQ N ’ Kilometres ■ujy T'Oktlx^ f'unhocyjp"'' JSL baiS<& # i>Lttton on Sea te«» '■■..... \ ^ n r ...... , M* /s W f iJItWwll j g \ ignoby « ‘ .t) ^•>5 ; jmw I Har 0^ ■. r '\ 1 o ^ ! & F23 * M SAK.n ijHttevv.frt. Fr''^ .Coa Hit. ? i^^H rinrjr f"n X i * CooHIlVvs^i ■y4>xiTiHjUrrr ?"• \ -afcJkN ^ * ^ 1^ - M- ■YJ*’ AsMfbv ‘I* X.: *L ip i ! «?. fir V j \ ■bSw r * Mill fUf tm J ^■'ifeo 4 L » \ ^ , f t ____’ Arderby if“ir*rp* fo r Wo' or F ir; — T U ro '^ n P o ) 4 .:'■» MncC.Do I'tfu JW : \ 1 v \ « /m ak v •• i— \' ^ v m •••■‘i I X '■■ !••■:' UT', N*0ft v ' M S y j s r ^ •le^Cumbftrvvorth Mlc|;Uibsrryy .> 'X j^ )tW p « # ' WIU » ^ ^ i v. I -• in ft ; F15&16 W .’"‘••l.Nif ■■..* U-W** w,*‘ C4 .L'XiSOv!. > V \ C *< * * &, n i ^ 3 S r J * f l>3i Point ..^ s i M L ______i t .....* Z i .....1 *3'^»rrJrtja#i iv * • r XT ^ : 1 rJ^ C urrU rw £th Ings / J 1 "•US- A \ iCjmiili1 m &b f : J------T il^yx o n a rd s ;hp$at St Leonards Ho r / 7 ! / „ ' ^ x 3 , J L . u — >i w —i £ r \ r ] V. _ a ^vttsncffcrm L(?i»6‘^ Iftvrh S i.00 ySXSBM ? '/ ■6^’ SlackHoUr< / " •q^st^fesa w JU’JUWLw jife / Ssod : r SlootnUv jK ’t / ■ 7 t” aAc« j —'■* Ho'vlit He«• cl y/ i- ^ 1 ■' I. .?/„ REPRODUCED FROM ORDNANCE SURVE\ MAPS WITH THE PERMISSION OF THE ^ f \ 3 v CONTROLLER OF H M S O CROWN ------^ . ^ i U ___ I___ COPYRIGHT RESERVED n { 1 ••...... «& ■" -%'W LICENCE No 548529 \ J'W vch* j r -V> ' m m m h t b £ j |T I yi l^ ns 1 L j I ;i* C " 7 1 \ ^ rV •'■"* ^ jHabortoft ...... LINCOLNSHIRE SHORELINE MANAGEMENT PLAN COASTAL DEFENCES POSFORD National Rivers Authority Anglian Region MAP 10 sheet 2 of 3 August 1995 NRA 121 DUVIVIER TABLE 2 (continued) COASTAL DEFENCES Frontage Length Existing Type of Construction Location Standard of Estim ated No (m) Defence Residual (years) Life (years) 22&23 490 Concrete Seawall with Rock Armour Toe N of Hutto ft Car Terrace 200 35-55 24 350 Concrete Seawall S of Fairway Cottage 5 0 25 200 Concrete Seawall Fairway Cottage 5 0 26 370 Concrete Seawall with Concrete Armour Fairway Cottage to Boygrift Outfall 10 20-31 Units 27 350 Concrete Seawall Boygrift Outfall 15 13-20 28 210 Concrete Seawall with Rock Armour Toe Sandilands Club House 25 35-55 29 480 Concrete Seawall with Rock Armour Toe Sandilands 25 35-55 30 220 Concrete Seawall with Rock Armour Toe Sandilands Pullover to Acre Gap 30 35-55 31 460 Concrete Seawall Acre Gap to Church Lane Pullover 50 40-60 32 280 Concrete Seawall N of Church Lane Pullover 100 6-9 33 260 Concrete Seawall S of Garden Cafe 70 28-44 34 220 Concrete Seawall Garden Cafe to Sutton Pullover 115 40-60 35.1 400 Concrete Seawall Sutton Pullover to Bohemia Point 20 40-60 35.2 70 Concrete Seawall Sutton Pullover to Bohemia Point 15 24-38 36 160 Concrete Seawall Bohemia Point 75 18-25 37 160 Concrete Seawall N of Bohemia Point 40 18-25 38 370 Concrete Seawall N of Bohemia Point 20 40-60 39 170 Concrete Seawall Trusthorpe 15 29-46 40.1 350 Concrete Seawall S of Trusthorpe Outfall 35 29-46 40.2 405 Concrete Seawall S of Trusthorpe Outfall 30 20-31 41 200 Concrete Seawall with Rock Armour Toe N of Trusthorpe Outfall 5 35-55 42 230 Concrete Seawall S of Gibraltar Road 135 29-46 43 170 Concrete Seawall Convalescent Home 110 35-55 44 150 Concrete Seawall N of Convalescent Home 45 35-55 45 180 Concrete Seawall Mablethorpe 35 5-10 46 830 Concrete Seawall Mablethorpe 55 40-60 Nl* 7200 Natural Dunes Mablethorpe to Saltfleet Haven 200 - N2* 8000 Clay Embankment Saltfleet Haven to Donna Nook 200 - Notes 1. *PD reference No. (no frontage no. assigned) 2. The standard of defence is defined as the return period of the storm event that the defences are able to provide protection against 3. The residual life of the defence is the number of years the structure is estimated to last before its integrity is compromised as a result of progressive deterioration 4. The table does not take into account the effect of the NRA’s beach nourishment scheme on the standard of defence aqit h orpfy-^ " ~ J I ~ y ir **=*7 T Key: Types of Defence / Wos&'rwcy/i/v / | 1 $ ■•...... JL y XU &*»< SlacMlolme rtenK£j±«e3_•y~—-tpt— i r / \E n d r ti ft Booties Concrete seawall with rock if *'•* !.•'• H<*,yl«t Nb |v - - ^ ti armour toe. ft W ' '1‘ ft y^A I ** *.\ \ u-2 -.*•/&K. "l; Kipo ft a ' .T***-*!™. V v Concrete seawall A' I f i , / /VUjnirnd | Natural dunes t "1?A ‘PFm Li . J ~ i % M u ■jn Revetment a£%-Q«KV: 4 : 0 ^ x X ...... tei ^tebtfSfaSS I* m r iFs.3" «<** V, Concrete seawall with concrete armour units os,-;- .F5-2 at toe -. \\ 4 t ...... \ f WWr# <4n>-dk\ » Sr»^*Sfr~. F8.1 ft S;>d,.u.n v. Clay embankment if 4 ^ r i r ■'■'■if' 1 M 1 V AorcKlroms § VSrty&n | | C^riip F29, F30 NRA Frontage Numbers F3 s s ~ - ■ ’ K ~ ■ ■. ■ ...... « ™ v i c - 4 Stcwr J Ashkgton En.cl.ji I F2 rimifi Hou«j ‘ 0 0.5 1 8-’tW;lv iHcMiftrt a».i ■ . I'm !W Kilometres ,',"f , 'S ...... JiMbntft - ' F1 Bfcl o F 0.3 ? Sijyfftt*/ 3 viw* ? fj f 0 .1^>n 'Ate *« * '■?5J*e. .M.tiiJio^srsh i. Fm SWnchiwiifLS® j - / *■>> h V^nAo' Pm ,y^' •»*c s&* S5E%"» «• V T” K Ss-iSa'’'’ -I Kllthfen'j ffl ? J /i J» ,1 :►' r v a,*.* 7i .»* Y * jps * 7 ¥.~ * -/i ^rr^^BSUcS^/ C // /a: i*r V.IIC . fl/ \ >' "^i ftraE ...V"£" •’■yj'•"•pv ■•■-'■ W a ln fte e t W a m fle e t , )$*& / / i • Road -'^<4 Ai [ Road silJMttaf - V i \ m ^ - y i f r * ~ , J eV h. n*£>$S4^g i p $ 3 "b YdfC r 1: ' ...... **- •+ NRA Frontage Numbers —?*!•*•■**• • • '•**• J*-'' •: REPRODUCED FROM ORDNANCE SURVEY| MAPS WITH THE PERMISSION OF THE CONTROLLER OF H.M S.O. CROWN COPYRIGHT RESERVED LICENCE No 548529 LINCOLNSHIRE SHORELINE MANAGEMENT PLAN COASTAL DEFENCES POSFORD National Rivers Authority Anglian Region MAP 10 sheet 3 of 3 August 1995 NRA DUVIVIER MAP 11 - LAND USE This map comprises three sheets which illustrate the use of land within the hinterland boundary. The data has been compiled from the United States Landsat satellite images recorded in May and June 1994 and analysed to indicate the distribution of land use within the following classifications: ■ Rural ■ Residential ■ Industrial ■ Commercial ■ Recreational ■ Woodland ■ Other The area within the hinterland boundary has been divided into discrete compartments of the land, the boundaries of which are generally determined by topographical features (both man-made and natural). Within each compartment the land use data is displayed as a percentage of the land area. Overall, the map illustrates that land use within the hinterland boundary is predominantly rural with residential, recreational and commercial activities occurring along the coastal fringe. Rural use is mainly agricultural with both arable and livestock farming undertaken on land that has generally been classified as grade 3a. The main centres of residential and recreational activity are Mablethorpe, Chapel St. Leonards, Ingoldmells and Skegness. Military interests are confined to the firing/exercise areas of Donna Nook and Saltfleetby. A major gas terminal is located at Theddlethorpe, north of Mablethorpe. The map also illustrates the hinterland boundary for the Plan. The location of this boundary is discussed in Map 1. Sources of Information: - Flood Defence Standards of Service and Asset Management, NRA Anglian Region, 1995. + Land Use ■■ Rural ' ■ i Forest 1 ** «4*>' '«i11 ■»»■■*■ "irX;;" ■■ Recreation eu Residential V " V lr' :"& V ^\por«n» >teok ■■ Industrial ' V ^lj^C Q w^tiwl1--f'X .. • >y 1*^1 ••■«•••• ••• • rj j a - ...... •,•>.•. . t^ ...• » ... ™ Commercial j Wo'-w' .,.r^"i'\ <^\ I v *3rsfi-4* ( ' i » i Vvi ■■ Other ► "' '*• -vK \ C4,'• * 1 1 v.-i.'.y J Boundary of I.r- -s' hn ■m- , compartment rX rt r.V'4$li*- J c ... # \ . v O i ' f|TT \ , X . l n » i « \# * . * a .%.'V ) % ^ N A**....• • *4*r- ...... ✓ * " '• > , \ *? „4"i % jS k L-'** <* j i* 4- •• „. % '••J -V/•/ •■ •>. /v - XJ R . tL . . \ \ S ' | to ■ ,P-i'Ji ‘A ' r r ^ „ v ^ S M fic rv ft •■fSa/mf- SUiil&uob' HINTERLAND, M urtN Ene I f >.- BOUNDARY 'K m . ft ,jrf V y ft- ~-*d....-v. 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Key: Sl^abiaih^foit Land Use *.H« \ LfM 0) i B^ l <2 ...y C; \ . .'"'vV Tuisthorpe Rural Irwls flti - Woodland V - Recreation AT ."[V □ Residential 4,Strubby S • \ \ VA&I? .'hujfir'!} 4 \‘V , .$& .•"! •' Tr»st.t<3 - Industrial __Thorpe^ HrJi X. - Commercial / ■ C A r : o ^ L | ; , i "i U»-*s glSuttpn on Sea Other A, PycartlO* ^ ^ j Boundary of ^•‘'T _ — J compartment •/ 3tc*l •V SarvcMands. t/f I! ...... •' 2« J.N.i.'Ffff V! I. rc-ri^9lh?/p» r^n VI +•• ••'•!•% A* >V- .w \ UJHjjham Fni M unpby C‘«J 3w Mjre»uj T: ' PU.5JJV.-.UJC>I< 'S.VoMflS / j s PH I Murirs»v # \ 3 HMI JM Z ' i A T U r L£QMflBS+i / y \ NaKan ■ A d i * J MiCill«tKI\vi ^ ^ A ’VUlhor^ Viiu r ^ w ^'{j-sd^C 11 n i b w-SfQ r 11 Q j Hil T (l5 W S Ujatccuf tr: I Cfcm*) Pcif.t I rfsrwncrps ^ i Q f^ r 'i ct-^' ChaiamisT *138 „ . £ t**T ...... C.4xtys GfilVjo i S r * r ' r CumtMsrvw-frthr^rth Ihqb /t v v <*i ... , 'V IV IChapei St Leon y^v\filloughljy \ V i/^j *ts I f •• •• A - £ ~ - s .f . .P .W ^.7 % ^ fl urofts * * ■■“w r • • V ^ ^ ^ j £ / 5? yth' \ t -j ~-~v j| ^Hogsthod ^HINTERLANDX ** ^ ' W S| ** LINCOLNSHIRE SHORELINE MANAGEMENT PLAN LAND USE |3| POSFORD ^ National Rivers Authority Anglian Region ICJ D U V IV IE R MAP 11 sheet 2 of 3 August 1995 NRA — I >j\j% [ChapaI St Leonards \ U;"*,Ji Srlvb«>pV^ 4 ^ _...Ho...J...... L.C v_....X _. / -fitoa: ____ L I ? " tfCtr ^ ^XTHogsiho' Land Use s^* nk-t s'/ J'SH y i ■ 'luc'jotp*L OVC-H#-* ///rw■wr.v SLOOWdr 5 k.0C'?‘.'3K a ' 3 - - r I ( g* • r' * .. .1 .**0•■Vf 3 t IW J o ® ’■ jL ..A ?. lilil... JlAflW ‘ Siacklioiwi ' .....: : t : - - r Slnoinbv T ^ ------\ / I1 ,: \ **•"'*«^ njrrp’ I J f \ * j ' ■ \ > ■ • i 1 V HINTERLAND \ /i i J,____ r ' -s-,l d ■■ Rural BOUN D A R Y t-^ ^ f , : S;°el|,lw Inga \ '• L *V, . ■■ Forest *x s vi a—r__ r ^l b * / V. ~ , ) , . 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Y / **% " j t e - ^ »V>H ' \Y\ s * r ...i"’ ’ - I '/ /-X. j^HINTERLANbr ..y f c l t r t l | J>Q^80UNDARY n >w v h - ' ‘l f MiJtii ^uy S & ^ ' X j g & \ ... jfo.x n i t * R ^ ‘« ^ Wainr^eftt 3 f ^ X X > ^ C ^ond Me^rfjitW* Fm 1 / Z 4 ■ ^ ^ v. £ - ,. v s M»4r* ru m X I E«» ! « 'V a , _ ^ rn lr* - -X -k - . .t* r 'I'ptft.r' i o j___ 1 x l # Kilometres ...... i ...... \ r X ^ ; . /•' %> ?<:- X X ^’: / ’' ,...... f...... X -'■-■•'•» # • ■-■...... \■ y ...... v'w ? > X ...... j^zs r * ...... ■ -/*—JL...... — ■;------[REPRODUCED FROM ORDNANCE SURVEY '^n. :y -;t X x .: / -*. THE PERMISSION OF THE ■ jW V j / ‘ OF H M S O CROWN > V ' . -:V.^ RESERVED. 548529 A' ^ • . f I r x X . ;: LINCOLNSHIRE SHORELINE MANAGEMENT PLAN LAND USE ^ National Rivers Authority Anglian Region 121 PO SFORD MAP 11 sheet 3 of 3 NRA IcJ DUVIVIER: August 1995 MAP 12 - THE PLANNING FRAMEWORK National Planning Guidance Through the publication of Planning Policy Guidance notes (PPGs), central Government provides guidelines to all relevant authorities as to how they should execute their responsibilities with regard to the wider public interest. County Councils are required to take account of the PPGs in the formulation of Structure Plans, as are other responsible authorities in their strategic documents. Finally, in 1995 the Department of Environment Coastal Forum was formed as a coastal policy initiative to take forward the effective co-ordination of coastal zone policies and practice. Structure Plan Policies The Lincolnshire Structure Plan (1982) is the primary statutory planning framework for the study area. The current county level policies are included in the following documents: Lincolnshire Structure Plan and "Alterations 1,2 and 3" which are updates or revisions to the original Structure Plan undertaken by the Planning Authority as resources and requirements permit. A further document of interest prepared by Lincolnshire County Council (LCC) in the mid-eighties is the Subject Ply*' entitled "Development on the Lincolnshire Coast". Map 12 illustrates the areas of planning constraints relevant to the SMP. The Coastal Conservation Areas (CCAs) were originally outlined in the 1981 Structure Plan in an effort to protect the remaining natural character of the coastline and the requirements of sea defence. The CCAs contain a general prescription against development. Policy 49a from the LCC Structure Plan, Alteration No. 3, states: "Within the CCA planning permission will not normally be granted for development unless the local planning authority is satisfied that it is essential for the proposed development to be located in one of the conservation areas. Planning permission will not normally be granted for development which would adversely affect the saltmarsh. Any essential development should not harm the amenity, character and/or nature conservation' interest of the CCA because of its siting, scale, form, appearance, materials, noise of fume emissions or traffic generation." and Policy 50A states: "Coastal management and conservation measures, including schemes for dune protection and the regulation of access, will be introduced along popular and/or sensitive areas of the coast where physical damage is apparent". Map 12 identifies areas around Mablethorpe and Skegness as multipolicy areas. The complex and built-up nature of these areas result in a wide variety of policies being developed by both LCC and East Lindsey District Council (ELDC) which are of general interest but are not set out in detail in. this document. Local Plan Policies , East Lindsey District Council, the relevant district authority for the whole of the study area, prepared, a Local Plan in 1993. ELDC was required to draw up policies for the CCAs in order to reflect local' requirements and conditions. Policy C19 states: "Within CCA1 and CCA4 development will not normally be permitted unless it is essential in that location. In particular, no built development should be permitted on or to the seaward side of the sand hills. Where permitted, development shall not harm the amenities, character or ecological balance of the area because of its siting, scale, form, appearance, materials, noise or fume emissions or traffic generation". and Policy C20 "Within CCA2 and CCA3 development will be permitted only where:- (a) it is essential in that location; or (b) it relates to an existing outdoor informal recreational use; or (c) it represents a minor extension to an existing building; and (d) it does not harm the amenities or character of the area because of its siting, scale, form, appearance, materials, noise or fume emissions or traffic generation." ELDC has recorded its intention to implement the principles of co-ordination essential to coastal planning, though its Advocacy Policy C21 which states: "The District Council will co-operate with the County Council and voluntary organisations in preparing and implementing a coastal management plan for the Coastal Conservation Areas." ELDC has also adopted a number of policies relating to areas of countryside or areas of open character (see Map 12) which seek to retain the important areas of open land. With the exception of built up areas, almost the entire length of the study coast is included in such designations. Policies DC1, DC2 and DC3 stipulate and control the type of development which is allowed in the designated countryside areas. ELDC has identified a number of settlements as defined coastal holiday areas within which the needs and requirements of the tourist industry will be afforded special attention in the consideration of proposals as detailed in Policy T2. Sources of information: East Lindsey Local Plan, ELDC January 1993 Lincolnshire County Council, "Development on the Lincolnshire Coast", LCC, 1986 Lincolnshire County Council Structure Plan (including Alterations No. 1, 2 and 3, LCC, 1993.) i Principle Planning Policies (Lincolnshire County Council & East Lindsey District Council) Multi-policy area (see text) Countryside or Areas of Open Character - Policies ELDC, DC1.DC2 and DC3 [onn\Noox Main coastal holiday area (ELDC, T2) CCA1 (POLICIES LCC, 49A ELDC.C19) CCA Coastal Conservation Area Note: Map is for illustrative purposes only, see original planning documents for detailed areas. ThajNlgrH-orvo JV Wi'Sainti MABLETHORPE • Trusthorpe .Stubby (f Sutton on Sea (POLICIES LCC, 50A ^nwlands ELDC, C21) CCA2 (POLICIES LCC, 49A ELDC, C20) Anderby Creek tU v VV/ F».-l»*thonae 7 l. i .A 'V S f \ L?rivonh / hapel St Leonards ilroS^br CCA3 (POLICIES LCC, 49A ELDC, C20) Ingoldmells 'mboidmalts C/ >'vr ,fN .'$*athdmo m[jjyvHj1g^ie j f ■ Vwu«1 -%Sl8n / iwcrbtt forpe frnrirjcre- cvc-ft /ygisi. ^ 5 ? fa*8nh ODUCED FROM ORDNANCE SURVEY WITH THE PERMISSION OF THE Kilometres ROLLER OF H.M S O. CROWN RIGHT RESERVED Pnsknvy Mats CE No 548529------ LINCOLNSHIRE SHORELINE MANAGEMENT PLAN PLANNING FRAMEWORK POSFORD Management of the fisheries on the Lincolnshire coast is undertaken by the Eastern Sea Fisheries Joint Committee (ESFJC). Commercial fishing activity along the Lincolnshire coast is typical of many coastlines along the east coast of England. Fishing effort is essentially small scale, involving a wide variety of methods and vessels. One day trips are typical although vessels from the Wash and Humber do make longer trips which may incorporate working the Lincolnshire coast. Geographical Extent of Fishing Grounds Map 13, shows the area of origin and principal activities of the vessels working along or adjacent to the Lincolnshire coast. The fishermen using this area will typically switch between different fishing methods and grounds, depending on a number of interrelated variables such as market conditions; demand from merchants and processors; weather and sea conditions. The variety of methods and grounds used by a number of independent vessels make it difficult to delimit specific areas of fishing activity. Similarly, any areas which are given boundaries are likely to be of limited value, as long term tools for strategic decision making, because of inevitable changes in fishing patterns which will occur as a result of market forces, etc. More information regarding the fishing areas may become available during the first stage consultation. There are no designated commercial shellfish harvesting beds within the study area. However, there are beds just outside the study area to the north and south. Horseshoe Point and the Wash are currently classified as bivalve mollusc production areas (grade C) under the Food Safety (Live Bivalve Mollusc and other Shellfish) Regulations 1992 as required by Directive 91/492/EEC. At a number of locations along the coastline, there are isolated and irregularly harvested cockle beds. These are intermittently worked usually when the Wash based vessels are unable to operate in the Wash or Humber. Shallow coastal areas are often important nursery grounds for species of fm-fish and the Lincolnshire coast is no exception. MAFF have undertaken a number of research trawls in this area (although most effort has been targeted at the Wash) the results of which suggest that there are a large number of immature fish in the coastal area at certain times of the year. Access Points The locally launched vessels are reliant on there being sufficient launching points along the coast to minimise travel time to fishing grounds. Other vessels (from Grimsby for example) are brought to the Lincolnshire coastline for launching into the inshore grounds. The principal accesses used by fishermen are illustrated on Map 13 and include:- ■ Skegness (North Shore Road) ■ Huttoft ■ Mablethorpe ■ Anderby ■ Chapel St. Leonards ■ Wainfleet Haven ■ Saltfleet Haven Sources of information: - Eastern Sea Fisheries Joint Committee Annual Reports -MAFF - UKDMAP Key: HUMBER VESSELS Trawlers, gill-netters and long-liners work close Commercial Fishing inshore and the offshore banks, targeting cod in the Winter months and skate in the Summer. \onns Nook Potting vessels active during Summer months _» Fishing Vessel Access and (April to October) for crab and Lobster both Location inshore and offshore. * RNLI Launching Point / A 0 SALTFLEET Depth contours in metres relative OVERFALLS to Admiralty chart datum. Sahflee 20m Clenwnt O 9om laMBertr^LSanift. V o r I A t THEDDLETHORPE Th8dtfle'ltajpAst Helen ^OVERFALLS Tt>edfiil8thofpe ‘ AjWiiint&J RPE Mablethorpe ajton le Marsh", LA THRUSTHORPE , j OVERFALLS (7 O * on Sea o INNER 0 DOWSIN Huttoft L_ / j 0VERFALLS Anderby Creek 0 _ 10m INNER DOWSING Mumby 20m Aiiihorpe r /? / ^ riivoflh / \ Chapel St Leonards 1 ^ , I St Leonards O LOCAL BEACH LAUNCHED VESSELS Gill-netters and long-liners target cod during the Winter months and skate in the Summer Ingjjdme! working both inshore grounds and offshore to the Dowsing shoals. 'Irig o tdmelS^PohP <;\A/itr_h tn nnttinn for lohster and crab during the Summer months working Doth inshore and offshore to beyond the 20m contour. I o I) y i V!,- r. 5 ?! i ( v f.Sfl«ll»orne CD Skegness North Shore Road JKEGNES * U f ) 0 & #*> ' / § WASH VESSELS 0 ' <"amftaet ■ f WainfleetHaven Twin-beam vessels trawl for both pink ; f P * and brown shrimp working both close Kilom etres to the teach and offshore banks. Cockle dredging vessels work the Wash Jr e p r o o u c e d fr o m o r d n a n c e s u r vey MAPS WITH THE PERMISSION OF THE and Humber area, but little evidence CONTROLLER OF H M S O CROWN of such activity off the Lincolshire coast. COPYRIGHT RESERVED LICENCE No 548529 LINCOLNSHIRE SHORELINE MANAGEMENT PLAN COMMERCIAL FISHING ACTIVITIES |2| POSFORD ^ National Rivers Authority Anglian Region MAP 13 sheet 1 of 1 August 1995 1 N R A IC l D U V IV IE R MAP 14 - TOURISM AND RECREATION Map 14 illustrates the principal activities which are involved in the tourism and recreation industry. The symbols used on the map are explained after a brief introduction to each of these activities. Tourism The origin of the Lincolnshire coast as a destination for tourists can be traced back to 1875 and is closely related to the use of railway. The area enjoyed major periods of expansion in the 1930s and again in 1950s and 60s. On the whole, after a gradual decline in popularity in the 1970s and 80s the tourist industry in the area has stabilised. In recent years the industry has begun to recover. Tourism is a vital component of the coastal area and it is estimated that East Lindsey district generates over £200 million in tourism spending each year with an estimated 5 million day visitors coming to the area. The importance of the tourism industry in terms of the provision of employment is illustrated in the high variation in unemployment rates between January (18.4%) and June (9.7%). The season for this stretch of coastline is relatively short, lasting only 20 weeks with a high season of 8 weeks during July and August. Recreation Water and land-based recreation has been developing along the Lincolnshire coast in line with national increases in this type of activity. In addition to providing an important resource for local residents, recreational activities are an important feature in attracting tourists and day visitors to the Lincolnshire coast. The area has attractive features for both formal and informal recreational activity. Activities The following paragraphs explain the tourism and recreational symbols which have been used on the accompanying map. "Peace and quiet" represents a resort which is recognised as a tranquil location, with few of the intensive style facilities of other beaches. "Beach" signifies a location at which the quality of the beach itself is of overriding importance in people’s decision to use a particular stretch. "Entertainment" indicates where there are formal facilities for entertainment of both children and adults (eg. amusement arcades). "Sea bathing" indicates those locations at which this activity is popular. "Wildfowling" is undertaken at these locations under the jurisdiction and control of local Wildfowling clubs. "Facilities for children" incorporates both toilet facilities and easy access. "Wildlife interests" represents locations at which people gather to enjoy observing nature (eg. seals, wildfowl, wading birds). "Sailboarding"signifies that there is an active windsurfing club. "Sailing club" indicates that an active sailing club operates. "Land yachting" signifies sand expanses where this activity is undertaken. "Beach fishing" indicating a stretch of beach which is frequented by sea-anglers. "Recreational boat fishing" shows launching points and broad fishing areas for this activity. "Rural car park" represents formal parking sites, usually accompanied by a beach access point. "Golf courses" indicates that there is a formal course available. "Public launching sites" indicates a sea access facility is available. Use Levels The information used for the ‘use levels’ has been derived from observations made during summer 1991. These observations were made as part of a questionnaire survey during the Strategy Study for the Mablethorpe to Skegness Sea Defence. Although the data is qualitative rather than quantitative, it illustrates the relative use levels for different stretches of beach. Sources of information Mablethorpe to Skegness Sea Defences Strategy Study, Environmental Statement (1991). Mablethorpe to Skegness Sea Defences Strategic Approach Study. Amenity Value of Beach Recharge Option. Strategic Tourism Development Plan, Lincolnshire Coast Partnership, 1993. Tourism and Recreation c m Caravan Peace and o Park Quiet _ fc \ Sea Fishing k Beach Beach A Sea Bathing Fishing A, Wildfowling Golf Club ') * A'00* r Facilities for f t Children s Rural Car Park ^raintliorpB Sailboarding Entertainment Somer k @ A Sailing Club Wildlife lira Interest Land Yachting y > Recreational 4 Launching Point Note: South Som ales 5 The symbols have been applied to named areas to which they apply. ^Skijtbrooke Intensity of beach use (Summer 1991) SaltfleitbV/S CIs I Not Surveyed Low Usage Moderate Usage fho-ae Si Heleo High Usage imoldb rminaf Very High Usage Carlton feWABLETHDRPE h m Carlton [ru$ihorpa 0 A r a Ptestan utton on Sea _ k P 5 v AufthWiei lar%cfi lands 0 SokrUK Syjiteby / Jnterby Crtek n A South Jmtsby A Anderby ( <*' Mumby \ Driliv Auihari \ Raw* \\ii* Well ^ —r Cufflbisrworth X^UIceby V' Chapel St Leonards i f A 0 1 lj dauby ]%jHogsthor^ .Willoiigiiby Higtofr\ f SSoothby \/\ ....r \ ------^ •5>^SauBth( rpe \\ 5k»i>dffby galdm eils j^-9- { "\ ^ \ y jU « 4 ^ddle^hbfp* W tilsit l« Raithby /Candlesby sathorni r^ ’SShst’ C'Ofast /i-kfe H ^J^^teapmg f SKEGNESS i f A - t \ A r a © j f Seacroti Croft ftforjsfi Ste Wpinflnei Sank ■WamHe«t All S a in ts^ P h a r |y Is New f l i L*ak* • wasnfleet . I 4 ' f #§ REPRODUCED FROM ORDNANCE MAPS WITH THE PERMISSION OF THE San4 :;-rM 0 CONTROLLER OF H M S O CROWN Kilom etres COPYRIGHT RESERVED LICENCE No 548529 ______LdlJK: m LINCOLNSHIRE SHORELINE MANAGEMENT PLAN TOURISM AND RECREATION POSFORD ( 5 National Rivers Authority Anglian Region MAP 14 sheet 1 of 1 August 1995 NRA DUVIVIER MAP 15 - COASTAL HABITATS Much of the data used in the preparation of Map 15 has been reproduced from the coastal oil pollution maps prepared by the Nature Conservancy Council in 1990. The boundaries used in the map are illustrative only for two reasons: the changing nature of the coastline, and the scale of the map which limits the level of detail that can be shown. In reality the habitat assemblage is more complex, especially at Gibraltar Point, and in this regard is included as a separate map in the supporting document. Despite the limitations of the data, the map illustrates the major types of habitats present on the coastline. Essentially the central stretch between Mablethorpe and Skegness consists of sandy beaches (with mud exposures) backed by hard defences, whereas towards the north and south of the Plan area there are more diverse habitats with both sand dune and saltmarsh. Large areas of sand flats are found to the north of Theddlethorpe and from Skegness southwards. The relatively coarse grained sand flats, together with smaller areas of mixed sediment especially around Donna Nook, support a rich flora and fauna. Wading birds regularly feed on the invertebrates in the intertidal zone. In the northern part of the Plan area, the sand banks are used by seals as haul- out areas at low water. The saltmarshes on the Lincolnshire coast have developed as a natural progression from mudflats. The periodic flooding of the mudflats, and the deposition of material raises the level of the mudflats allowing saltmarsh vegetation to develop. The saltmarshes provide valuable habitats for a range of plants and animals adapted to the saline environment. At Donna Nook, Saltfleetby and at Gibraltar Point the saltmarsh is backed by natural dune systems which lead to the development of features, such as brackish pools and sandy areas within the marsh. Such features increase the habitat diversity and improve the ability for a variety of communities to establish. In addition to supporting any animal and plant species, mature saltmarshes form important breeding sites for birds. A variation which occurs within the saltmarsh areas are the areas of freshwater marsh in the Saltfleetby and Gibraltar Point areas. Sand dunes occur at intervals along the coast, including, and to the north of Gibraltar Point. They are widest at Theddlethorpe and Gibraltar Point where there is an active accretion zone, and narrowest between Mablethorpe and Skegness where coastal erosion is the dominant force. The plant and animal life diversifies as the dunes mature. At Saltfleetby the sand dune habitats are at their most valuable because there are damp and wet areas present (ie. slacks) which provide habitats for a variety of communities. The map also illustrates the main areas where waders and seals are present. Sources of information: - Atlas of Nature Conservation Sites in Great Britain Sensitive to Coastal Oil Pollution, Nature Co Conservancy Council, England. Key: Habitats Sand Saltmarsh Sand dunes and dune scrub J lw tfy S f Clement TNeddf^thortie 5^ Ail'Samts I mablethorpe rustfliJfpe Slrubby ({ Sutton on Sea ■ 1 l a n d s - j W B p V - 7 r i f Sslflby *> ^ y | \ v f % ______ a t « r v . Antf«»by Creek V ftUlwby 'i. Chapel St Leonards __ ^Cisxb^ W- gidouJIs jgoUfm ells Point w 0 I FROM ORDNANCE ! i WITH THE PERMISSION OF THE CONTROLLER OF H M SO CROWN Kilometres COPYRIGHT RESERVED M LICENCE No 548529 l A j f y v y , - LINCOLNSHIRE SHORELINE MANAGEMENT PLAN HABITATS |PO SFO RD 0 National Rivers Authority Anglian Region MAP 15 sheet 1 of 1 August 1995 NRA Id u v i v i e r r r r r MAP 16 - CONSERVATION SITES Natural Environment Sections of the Lincolnshire Coast are covered by a variety of local, national and international designations to protect features of the natural environment. The different designations provide varying degrees of protection, the principal designations being shown on Map 16. Table 3 provides a brief description of the designation and the main features of interest within the boundary. For the purposes of the table, sites are first and foremost identified as being SSSI’s because of their role in providing the statutory mechanism through which the other national and international designations are implemented. TABLE 3 CONSERVATION DESIGNATIONS Site Name Designation Main Features North Lincolnshire Coast Site of Special Scientific Interest (SSSI) Intertidal sand Special Protection Area (SPA) Shingle bars Ramsar Site Mudflats Saltmarsh Low dunes Breeding grey seal colony , Ornithological Coastal lagoons I Saltfleetby - Theddlethorpe Site of Special Scientific Interest Intertidal flats National Nature Reserve (NNR) Sand dunes Salt and freshwater marsh Vascular plants Invertebrates Breeding and overwintering birds Natterjack toads Sea Bank Clay Pits Site of Special Scientific Interest Isolated flooded clay workings Aquatic plant communities Gibraltar Point Site of Special Scientific Interest Sand dunes Special Protection Area Salt and freshwater marsh Ramsar Site Invertebrates National Nature Reserve Passage and breeding birds Coastal geomorphology Wash and North Norfolk Coast Possible Special Area of Conservation (pSAC) Subtidal sandbanks (Marine) Glasswort and other annuals Saltmeadows Saltmarsh scrubs Intertidal mudflats and sandflats Shallow inlets and bays Common seal , North Norfolk Coast and Possible Special Area of Conservation Dune grasslands Gibraltar Point Dunes (Terrestrial) Lagoons Mediterranean saltmarsh scrubs Shifting dunes Shifting dunes with marram grass Humid dune slacks Coastal shingle vegetation Sutton-on-Sea Foreshore Regionally Important Geological Site Intertidal deposits Peat exposures Wolla Bank Foreshore Regionally Important Geological Site (RIGS) Intertidal deposits Peat exposures Chapel Point Geological Conservation Review Site (GCRS) Intertidal deposits Site Name Designation Main Features Seacroft Foreshore Site of Nature Conservation Importance (SNCI) Sand and shingle ridges Extensive areas of mud Ornithological Anderby Creek Site of Nature Conservation Importance Mature grey sand dune Reed dominated clay pits Passage migrants Warren Road Dunes Site of Nature Conservation Importance Inner dune grassland Hutto ft (submerged forest) Regionally Important Geological Site Submerged forest The existence of SPA and possible SAC sites both within and adjacent to the Plan area will bestow particular responsibilities on the relevant coastal authorities. The MAFF guidelines on SMPs state that "Shoreline Management Plans which include such sites will need to reflect the special protection afforded to the habitats or species for which they are identified as being of international importance. Damage to these sites is only permissible for ‘imperative reasons of overriding public interest’ and where there is no reasonable alternative option or different practicable approach available which would have lesser impact". Table 4 summarises the conservation designations and legislation. TABLE 4 CONSERVATION DESIGNATIONS & LEGISLATION Designation Legislation Special Area of Conservation Designated under Council Directive 92/43/EEC and implemented into UK (SAC) Law by Conservation (Natural Habitats + C) Regulations 1994 and Wildlife and Countryside Act 1981. Special Protection Areas (SPA) Designated under Council Directive 79/409/EEC and implemented into UK Law by Wildlife and Countryside Act, 1981, and Conservation (Natural Habitats and C) Regulations 1994. Ramsar Site Listed under the Convention on Wetlands of International Importance implemented into UK Law through Wildlife and Countryside Act 1981. Site of Special Scientific Interest Notified under Section 28 of the Wildlife and Countryside Act. (SSSI) National Nature Reserve (NNR) Declared under Section 19 of the National Parks and Access to the Countryside Act 1949 or Section 35 of the Wildlife and Countryside Act 1981. Local Nature Reserve (LNR) Designated under Section 21 of the National Parks and Access to the Countryside Act 1949. Site of Nature Conservation Designated by local authority. Importance (SNCI) Archaeological Interest Consultations with archaeological organisations established that there is only limited information available regarding sites of archaeological interest or potential in the coastal areas of Lincolnshire. The prime reference for information regarding this subject is the result of a basic survey undertaken in 1986,' the Lindsey Coastal Survey, involving beach observations and isolated pockets of sediment testing. The survey identified a zone between Seathorne and Mablethorpe which "..has the exposures of archaeological importance for the Lincolnshire coast". Apart from the identification of the Ingoldniells Parish as being a site with "..marked concentrations of archaeological deposits.." the level of survey to date is unable to be more specific. Sources of information; - Lindsey Coastal Survey, 1986 - SSSI citations and various documents relating to nature conservation sites - Shoreline Management Plans:.a guide for coastal defence authorities, MAFF 1995 National Rivers Authority Anglian Region August 1995 NRA MAP 17 - MANAGEMENT UNITS In developing strategic coastal defence options for Lincolnshire it is helpful to divide the coastline into a number of lengths known as management units. A management unit is defined as a length of shoreline with coherent characteristics in terms of both natural coastal processes and land use. The management units proposed for the Lincolnshire coast are shown on Map 17. These units have been derived from the information on coastal processes and land use presented in this document. They have been numbered consecutively from Donna Nook to Gibraltar Point and the boundaries and characteristics of each unit are defined in Table 5. The basis for the location of the unit boundaries is briefly described as follows: north of Unit 1 - boundary with sediment sub cell 2b Unit 1 /Unit 2 - change in land use; Unit 2 is essentially rural whereas Unit 1 includes the residential areas of North Somercoates and Saltfleet. Unit 2/Unit 3 - change in land use; Unit 3 includes the residential and recreational areas of Mablethorpe, Sutton-On-Sea and Sandilands whereas unit 2 is essentially rural. change in coastal processes; in Unit 3 the beaches are steepening whereas in Unit 2 they are advancing. Unit 3/Unit 4 - change in land use; Unit 4 is essentially rural whereas Unit 3 includes the residential and recreational areas of Mablethorpe, Sutton-on-Sea and Sandilands together with the Theddlethorpe Gas Terminal. Unit 4/Unit 5 - change in land use; Unit 5 includes the residential and recreational area at Anderby Creek whereas Unit 4 is rural. Unit 5/Unit 6 - change in land use; Unit 6 is essentially rural whereas Unit 5 contains Anderby Creek. Unit 6/Unit 7 - change in land use; Unit 7 includes the residential and recreational area of Chapel St Leonards whereas Unit 6 is rural. Unit 7/Unit 8 - change in land use; Unit 8 is essentially rural whereas Unit 7 contains Chapel St Leonards. Unit 8/Unit 9 - change in land use; Unit 9 includes the residential and recreational areas of Ingoldmells, Seathorne and Skegness whereas Unit 8 is rural. Unit 9/Unit 10 - change in coastal processes; in Unit 10 the beaches are advancing whereas in Unit 9 they are steepening. Unit 10/Unit 11 - change in land use; Unit 11 is essentially rural whereas Unit 10 contains < the residential area of Seacroft. south of Unit 11 - boundary with sediment sub-cell 2d TABLES MANAGEMENT UNITS FOR SUB-CELL 2c: DONNA NOOK TO GIBRALTAR POINT Management Unit Boundary Coastal Processes Principal Existing Demarcation Land Use Defences No. Name Beach Likely Drift Evolution Sediment Direction Type 1 Donna Nook Sub-cell 2b Sand Uncertain Advancing Rural Embankment to Saltfleet Residential Dunes Other Saltfleet Haven (464 935) 2 Saltflcct to Mablethorpe Sand N W to S E Advancing Rural Dunes South of Theddlethorpe St Helens (489 882) 3 Mablelhorpe to Sandilands Sand N W to S E Steepening Rural Concrete Seawall Residential Recreational Industrial Sea Lane (528 808) 4 Sandilands to Anderby Creek Sand NW to SE Steepening Rural Revetment, Concrete seawall, Concrete Seawall with rock armour toe North of Andeiby Creek 5 Anderby Creek (549 767) Sand NW to SE Steepening Rural Revetment Residential South of Anderby Creek 6 Anderby Creek to Chapel Si(554 756) Sand N W to S E Steepening Rural Revetment Leonards Chapel Point (563 733) 7 Chapel St Leonards Sand NW to SE Steepening Rural Concrete Seawall, Concrete Seawall with rock Residential armour toe Tninch Lane (566 710) Recreational 8 Chapel St Leonards to. Sand NW to SE Steepening Rural Concrete Seawall, Concrete Seawall with rock Ingold mells armour toe Vickers Point (571 698) 9 Ingoldmells to Skegness Sand N to S Steepening Rural Concrete Seawall with rock armour toe. Residential Concrete Seawall Recreational Princess Parade (570 626) 10 Skegness to Seacroft Sand NloS Advancing Residential Dunes Rural Seacroft (566 610) 11 Scacroft to Gibraltar Point • Sand N to S Advancing Rural Dunes Sub-cell 2d UNIT 1 '"Donna Nook v . - -■*. Stimer T 7otei 2 Skidbrpofcs UNIT 2 .Saltfwttby^lLSIiinpk **JOl Helen Srimoldbildbv f f / ' TMdlemorpa .Terminal A M s iin ts , UNIT 3 Dibh Carlton kflABLETHORPE Gay on In M v ^JwTrusthorpe r, on .9^ - \ «,wj» rSutton on Sea Jp? Witfwn Lt, I J* M altby I le Marsh 'F Atfligfre i r \f {( A y IMM BllTllill 11 Im 5 / UNIT 4 '? f T w T '^T }r$aleh* * / / \ \ r t o** 1) V'v A , UNIT 5 Thonpsby. it I MALFORD f o 1 .....) f '• l^SliC *ldw* I I MIT C \\ F#rltiaihorp« ’ A’TMumby l,m U N I I O v£ V _A'‘,knfr° Wi 1 y\>-^Cum! ferwonh / | V ] / \ l | chapel St Uonari U N IT 7 daxby VSrSSW £willoupiby— ^ Vfe — ------M l INllfJ 'f^iloothby / t / /\\ ^ UNIT 8 <£i v— i f — t— — t —* r J a ------wfdtiieJis 'ortne* Weltyjnjs N tnpotdmelts Point V ,'Gendle?by SPILSB Ashby -y^Rartney UNIT 9 m a A, jbl__Mi» * ■Bratoft H H i l ? • mion’p, 7; KEGNESS 'StPetero \ » UNIT 10 hofprFtndrkes Croft Marsh Wtinflm Ben ■Wainfleat All Sainis UNIT 11 W&nfleet. ■: J J REPRODUCED FROM ORDNANCE SURVEY^ ' ' 1 / C*/W ■.S- /? MAPS WfTHWITH THE PERMISSION OF THETl CONTROLLER OF H MM.S.O S O CROWN COPYRIGHT RESERVED LICENCE No 548529 ZZS ■S^ LINCOLNSHIRE SHORELINE MANAGEMENT PLAN National Rivers Authority Anglian Region POSFORD NRA DUVIVIER MANAGEMENT OBJECTIVES GENERAL The following draft management objectives have been set during Stage 1, these will form the basis for the appraisal and development of the strategic coastal defence options in Stage 2 of the Plan. MANAGEMENT OBJECTIVES The broad management objectives which will apply across the entire Plan are: ■ to provide protection from flooding where this is economically viable and environmentally appropriate ■ where possible, to conserve and enhance environmental assets More specific objectives relating to the provision of economically viable flood defences are listed below. Land Use and the Human and Built Environment Planning ■ To provide protection from flooding and erosion in a manner consistent with the policies and objectives established with the planning framework Agriculture ■ To provide protection from erosion or flooding to agricultural land where justified ■ To assist with the enhancement of the rural economy (farm diversification, maintain 'and enhance the countryside) wherever possible Fisheries ■ To minimise any adverse effects that coastal defence works may have on the coastal fishing activity during the construction phase ; ■ To minimise any adverse impacts that coastal protection may have on the long term viability of the fishing industry ■ To ensure that coastal defence structures and works continue to provide adequate access for the fishery activities ! Tourism and Recreation ■ To ensure that all areas and accesses, presently used for recreation and amenity purposes, are retained or enhanced ■ To ensure that during construction of the coastal defence works, recreational facilities, activities and accesses are, wherever possible, retained 1 ( i ■ To minimise the risk to beach users during construction works Archaeology ■ To minimise and mitigate against any adverse impacts that the coastal defence works may have on the archaeological resource Military Use ■ To ensure that military interests are considered, in terms of safety and access, during the planning and construction of the coastal defence works ■ To minimise any adverse affects that the coastal defence works may have on the MOD’s present activities Offshore Activity ■ To develop a strategic framework which considers the full implications of coastal defence works on the offshore extraction. Natural Environment biological and geological; ■ To develop a strategic framework to ensure that coastal defence options sustain biodiversity and the integrity of the natural environment by maintaining a favourable conservation status ■ To identify means by which shoreline and defence management will create, maintain and enhance the natural environment ■ To ensure that features of geological interests are conserved, wherever possible ■ To allow natural processes to continue ■ To implement an effective monitoring scheme to determine the effect of the coastal defence option on the nature conservation value of the coastal zone landscape; ■ To develop a strategic coastal defence framework which sustains and where possible, improves the existing landscape character of the.area ■ To, wherever possible, consider the Countryside Commission’s principles for Heritage Coasts water quality: ■ To ensure that the coastal defence works sustain and, where possible, improve the water quality in the coastal waters in accordance with the relevant EC Directive. ■ To maintain the ability of the pumping stations to discharge effectively during and after the construction of the coastal defence works. CONSULTATION The following individuals and organisations were consulted during the preparation of this document. Nature Conservation Recreational Clubs English Nature - Headquarters Skegness Yacht Club - Grantham Office r Northshore Sailboard Club RSPB - East Anglian Regional Office Skegness Boating Club • Treasurer Lincolnshire Trust for Nature Conservation - Headquarters Mablethorpe Land Yachting \ Marine Conservation Society - Conservation Office Huttoft Boating Club Lincolnshire County Council - County Ecologist The North Lincolnshire Wildfowlers Club - Honourary Secretary ; National Rivers Authority - Conservation Department Lincolnshire Landyacht Club - Secretary • Fisheries Skegness Sailboard Club - Club Secretary \ Eastern Sea Fisheries Joint Committee - Deputy Clerk and Fisheries Officer Skegness Sea Angling Club . - Hon. Secretary North Eastern Sea Fisheries Committee - Clerk of the Committee The Pier Angling Club National Rivers Authority - Fisheries Officer Mablethorpe Angling Club i MAFF • Lowestoft, Sea Fisheries Inspectorate ! - Burnham-on-Crouch, Directorate of Earl of Scarborough Sports Centre Fisheries Research Skegness Canoe Club i National Federation of Fishermens Organisations • Secretary Archaeology/Heritage 1 Sea Fish Industry Authority - Shellfish Environment Officer Society for Lincolnshire History and Archaeology - Chairman i Lowestoft Inshore Fishing Vessels Owners - Chairman Lincolnshire County Council - County Archaeologist , Association English Heritage - East Midlands Team Lowestoft Fishing Vessels Owners Association - Secretary Ltd. Heritage Trust of Lincolnshire • Chairman j North Norfolk Fishermen’s Society - Secretary Lindsey Archaeological Services - Manager Lincolnshire Coastal Fishermen’s Association - Secretary/Chairman Services King’s Lynn Fishing Vessels Owners Association National Rivers Authority - Flood Defence and Operations 1 Boston and District Inshore Fishermen’s - Secretary Anglian Water Services Limited - Marine Group , Association National Grid Company Pic - Wayleave Officer (Midlands) i Wells and District Inshore Fishermen’s British Pipeline Agency - Operations Supervisor 1 Association East Midlands Electricity - Planning Engineer ^ Suffolk Coastal Longshore Fishermen’s ' i Association British Gas Pic - Theddlethorpe Terminal, Manager Yorkshire and Anglia Fish Producers Organisation British Telecom - East Midlands District 1 King’s Lynn Fishing Industry Co-operative Ltd. Genera! Council member Parish/Town Councils . 1' \ Fosdyke Fishing Society - Secretary Skegness Town Council - Town Clerk . Boston Fishermen’s Co-Operative Ltd. - Secretary Mablethorpe and Sutton Town Council - Town Clerk * i J and J Shellfish . - Manager Huttoft Parish Council ‘ - Parish Clerk ' Grimsby Seiners Association - Chairman Anderby Parish 1 - Parish Clerk ’ ! Hull Fishing Vessels Association - Chairman Chapel St. Leonards Parish Council , - Parish Clerk [ Great Yarmouth Fishermen’s Society - Chairman Ingoldmells Parish Council - Parish Clerk , t Bridlington and Flamborough Fisheries Society - Chairman Addlethorpe Parish Council '■ - Parish Clerk ; \ l 1 W ater Q uality and D rainage Local Authorities Skegness and Alford Drainage Board - Chief Executive East Lindsey District Council - Central Services Department , ii '- Planning and Economic Development Land Ownership/Landscape/Land Use - Community and Housing \ The Crown Estate - Marine Estates Contract Services Department ; :i 1 , * County Landowners Association - Regional Secretary Lincolnshire County Council Highways and Planning « - Environment Officer } National Farmers Union - Technical Advisor (East Midlands ( Region) O thers ! ’ Countryside Commission * Eastern Regional Office HM Coastguard - Yarmouth District - Humber District Council for the Protection1 of Rural England - Lincolnshire Branch RNLI - Honourary Secretary Ministry of Defence - Defence Lands Services Sea Defence Flood Committee - Chairman The National Trust - East Midlands Region (Skegness Town Council) MAFF - Land Use Planning Unit Department of the Environment - Coastal Policy Division t Woodland Trust - Public Affairs Office Department of Transport - Ports Division Lincolnshire County Council - Recreational Services Department Anglian Coastal Authorities Group - Secretary Leisure/Recreation/Tourism MAFF - Flood and Coastal Defence Division East Midlands Tourist Board - Business Services Manager - Midlands Regional Office Lincolnshire Coast Partnership - Project Manager Eastern Council for Sport and Recreation - East Midlands Region Ramblers Association Skegness 2000 Mabiethorpe Sutton and District Tourist - Chairman i Association British Association for Shooting and Conservation - Conservation Officer Seagull - Chairman ^ 7 / ' ^W lV n* yy py\) *X • jjy**.. *s * Winlhsip