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Anglian Coastal Monitoring Programme Report 2013/2014

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Anglian Coastal Monitoring Programme Report 2013/2014 Anglian Coastal Monitoring 2013/14 programme Report - RP043/A/2014 April 2014 Title here in 8pt Arial (change text colour to black) i We are the Environment Agency. We protect and improve the environment and make it a better place for people and wildlife. We operate at the place where environmental change has its greatest impact on people’s lives. We reduce the risks to people and properties from flooding; make sure there is enough water for people and wildlife; protect and improve air, land and water quality and apply the environmental standards within which industry can operate. Acting to reduce climate change and helping people and wildlife adapt to its consequences are at the heart of all that we do. We cannot do this alone. We work closely with a wide range of partners including government, business, local authorities, other agencies, civil society groups and the communities we serve. Published by: Environment Agency Kingfisher House, Goldhay Way Orton Goldhay, Peterborough PE2 5ZR Email: enquiries@environment- agency.gov.uk www.environment-agency.gov.uk © Environment Agency 2014 Further copies of this report are available from our publications catalogue: All rights reserved. This document may be http://publications.environment- reproduced with prior permission of agency.gov.uk or our National Customer the Environment Agency. Contact Centre: T: 03708 506506 Email: enquiries@environment- agency.gov.uk. ii Anglian Coastal Monitoring 2013/14 programme Acknowledgements Programme partners: North East Lincolnshire Council East Lindsey District Council Boston Borough Council South Holland District Council Borough Council of King’s Lynn and West Norfolk North Norfolk District Council Great Yarmouth Borough Council Waveney District Council Suffolk Coastal District Council Colchester Borough Council Tendring District Council Maldon District Council Southend Borough Council Anglian Coastal Monitoring 2013/14 programme iii Contents 1 Introduction 1 1.1 Anglian Coastal Monitoring programme 1 1.2 2013/14 surveys 1 2 Aerial photography 4 3 LiDAR 6 4 Hydrographics 8 5 Topographic 15 6 Hydrodynamics 16 7 Appendix 18 List of Tables Table 1.1: Monitoring cells (or survey schemes) and associated IDs 2 Table 2.1: Flight dates and polygon coverage of summer 2013 vertical aerial photography 5 Table 3.1: LiDAR data coverage 7 Table 4.1: Singlebeam and multibeam open coast hydrographic coverage 9 List of Figures Figure 1.1: Extent of survey monitoring cells along the coast 3 Figure 3.1: LiDAR from the summer 2013 survey 6 Figure 4.1: Bathymetry survey data coverage of Polygon P_9120 10 Figure 4.2: Bathymetry survey coverage of Polygon P_9119 10 Figure 4.3: Bathymetry survey coverage of Polygon P_9118 11 Figure 4.4: Bathymetry survey coverage of Polygon P_9117 11 Figure 4.5: Bathymetry survey coverage of Polygon P_9116 12 Figure 4.6: Bathymetry survey coverage of Polygon P_9115 12 Figure 4.7: Bathymetry survey coverage of Polygon P_9114 13 Figure 4.8: Bathymetry survey coverage of Polygon P_9113 13 Figure 4.9: Bathymetry survey coverage of Polygon P_9112 14 Figure 6.1: Location of wavebuoys maintained as part of the Anglian Coastal Monitoring 17 Figure 7.1: Aerial photography coverage over Lincolnshire 18 Figure 7.2: Aerial photography coverage over The Wash 19 Figure 7.3: Aerial photography coverage over Norfolk 20 Figure 7.4: Aerial photography coverage over Suffolk 21 Figure 7.5: Aerial photography coverage over Essex 22 Figure 7.6: LiDAR coverage at Hunstanton 23 Figure 7.7: LiDAR coverage in Norfolk 24 Figure 7.8: LiDAR coverage in Suffolk 25 Figure 7.9: LiDAR coverage in Essex 26 Figure 7.10: Hydrographic survey coverage of the Suffolk coast 27 Figure 7.11: Hydrographic survey coverage of the Suffolk coast 28 Figure 7.12: Spot height survey from Theddlethorpe to Skegness 29 Figure 7.13: Spot height survey from Hunstanton to Heacham 30 Figure 7.14: Spot height surveys at five areas at Holme dunes 31 Figure 7.15: Spot height survey from Overstrand to Winterton 32 Figure 7.16: Spot height survey along Felixstowe 33 List of Photos Photo 2.1: Aerial photograph from the summer 2013 survey 4 Photo 6.1: Felixstowe DWR 16 iv Anglian Coastal Monitoring 2013/14 programme 1 Introduction 1.1 Anglian Coastal Monitoring programme The Environment Agency (EA) Shoreline Monitoring Group (SMG) leads the Anglian Coastal Monitoring (ACM) programme undertaking regular strategic monitoring of the Anglian coast since 1991. The rationale behind the programme is to assist the implementation of appropriate and sustainable works on the coast, whether these are works undertaken by the EA or coastal protection partners, for the purpose of flood and erosion risk management. In addition, a further output from the monitoring programme is the assessment of coastal dynamics to inform long-term strategic plans for the coastline. Survey data gathered as part of the ACM is available from the SMG and can be requested by emailing [email protected]. 1.2 2013/14 surveys This is the third year of Phase 8 of the Anglian Coastal Monitoring programme, which runs from 2011 to 2016. 2011-12 was considered to be a baseline year for aerial photography and topographic survey coverage, and 2012-13 a baseline for LiDAR surveys. This report provides an overview of survey data collected during 2013-14. The following surveys were carried out as part of the programme this year: • aerial photography; • LiDAR; • hydrodynamics; • hydrographics; • topographic transect and spot height surveys. Alongside descriptions of data types and survey extents, this report provides information on data resolution and quality control (QC) of the datasets described therein. The Anglian coast is monitored on a strategic, regional basis, consisting of five regions (Lincolnshire, The Wash, Norfolk, Suffolk and Essex) and fitting within the Shoreline Management Plan boundaries of the Anglian coast. Due to the dynamic nature of the coast and the associated risk management, monitoring on a more local scale varies on an annual basis; therefore, the Anglian coast is divided into a series of monitoring cells. These monitoring cells allow for different surveys (or intensity of surveys depending on coastal risk, project and management activity or areas of geomorphological interest requiring particular attention) to be undertaken on a localised basis. These divisions help with programme planning, data management and allows for flexibility in the monitoring programme. Monitoring cells referred to in this document are listed in Table 1.1 (overleaf). Anglian Coastal Monitoring 2013/14 programme 1 Monitoring cell / scheme ID Monitoring cell / scheme ID Aldeburgh AL Kelling Hard - Cromer KC Bawdsey BW LINCOLNSHIRE L Benacre Broad BB Lowestoft LW Blakeney Point BP Mablethorpe - Skegness MB Brancaster Bay BR Maplin Sands MS Clacton - Jaywick CJ Mersea Island MI Cley CY Minsmere MM Covehithe CV Mundesley - Happisburgh MH Cromer - Mundesley CM Nene - Wolferton NW Dengie Flats DF NORFOLK N Donna Nook DN North Hunstanton NH Dunwich DW Orford Ness ON Easton Broad EB Saltfleet - Theddlethorpe ST ESSEX E Scolt Head SH Felixstowe FX Scroby Sands SS Felixstowe Ferry FF Seawick SK Gibraltar Point GP Sizewell SZ Gorleston - Corton GO Slaughden SL Great Yarmouth - Gorleston GG Southend-on-Sea SE Grimsby - Cleethorpes GC Southwold SW Hamford Water HAM SUFFOLK S Happisburgh - Winterton HW Tendring - Holland TH Harwich HR Thorpeness TN Holbeach HO Walberswick WL Holkham Bay HK Walton-on-the-Naze WN Hollesley Bay HL WASH W Holme HM Wash Banks WB Hunstanton - Heacham HH Wells - Stiffkey WS Table 1.1: Monitoring cells (or survey schemes) and associated IDs 2 Anglian Coastal Monitoring 2013/14 programme Figure 1.1: Extent of survey monitoring cells along the coast (regional extents are shown landward of the coastline and the individual cells within each region are shown on the seaward side). The red outlines denote partnering authority boundaries. Anglian Coastal Monitoring 2013/14 programme 3 2 Aerial photography An aerial photography survey covering the coastline is flown every summer. The photography is 4-band colour and infra-red (RGBi) imagery delivered as .ecw files. The photography is orthorectified to tie the imagery to real-world coordinates. This allows photographs to be displayed as a continuous image mosaic in a Geographic Information System (GIS). The 2013 vertical aerial photography survey (PM_1446) was captured over eleven sorties on the 25th June, and then from 5th to 9th July and the 12th, 13th and 15th of July 2013. The coast was captured in discrete frontages; the assigned polygon numbers for these sections is described in Table 2.1 below. Data was captured across 27 survey polygons P_9066 to P-9090 and P_9101 to P_9102 but has been collated and supplied as regional frontages of Essex, Lincolnshire, north Norfolk, Norfolk Suffolk and The Wash. The individual image files cover 1 km tiles and are available at a 70% or 90% compression rate. The imagery was captured with a Leica RCD30 multi-spectral camera with synchronous LiDAR captured for orthorecification using Optech Gemini systems. The imagery has a 20 cm resolution. For instrument and flight specifics and data processing refer to the QC report (requested from [email protected]). Aerial photography coverage for 2013-14 is shown in Figures 7.1 to 7.5 and further details are given in Table 2.1 (overleaf). Photo 2.1: Aerial photograph from the summer 2013 survey 4 Anglian Coastal Monitoring 2013/14 programme Project Polygon Date of Frontage Monitoring cell
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