Members’ Library Service Request Form Date of Document 09/10/14 Originator David Northcott Originator’s Ref (if any) Document Title Flood Risk Management Strategy Please indicate if access to the document is to be “unrestricted” or “restricted”, with regard to the terms of the Local Government (Access to Information) Act 1985. Unrestricted Restricted If the document is “restricted”, please state on what grounds (click on grey area for drop- down menu): For Publication Please indicate which committee this document should be recorded into (click on grey area for drop-down menu): Cabinet Additional information: The following are lodged in the Members' Library - these relate to the Flood Risk Management Strategy report to Cabinet on 21 October 2014. - Potentially Vulnerable Areas (PVA) summaries - Appraisal Brief - Characterisation Reports Authorised By Monica Patterson Designation DCE (P&CS) Date 10/10/14 For Office Use Only: Library Reference 193/14 Date Received 10/10/14 Bulletin Oct14 Potentially Vulnerable Area: 10/21 - Musselburgh Local Plan District Local Authorities Main Catchment 10 - Forth Estuary City of Edinburgh, East Edinburgh Coastal Lothian Background This Potentially Vulnerable Area (PVA) covers an area of 12km2 and includes a small part of Edinburgh and Musselburgh (Figure 1). Within this PVA approximately 1,300 residential properties are at a medium likelihood of flooding from one or more sources. The total Annual Average Damages (AAD) from all sources of flooding are approximately £3.2 million (this includes damages to residential properties, non- residential properties, transport and agriculture). The majority of these damages are caused by river flooding (Figure 2). 5% 21% River Coastal Surface 74% Figure 2: Annual Average Damages by flood source Figure 1: Musselburgh Potentially Vulnerable Area Summary of impacts from all sources of flooding Approximately 1,300 residential properties and 270 non-residential properties are at a medium likelihood of flooding from one or more sources. A summary of the impacts from all sources of flooding can be seen in Table 1 and a map showing the impacts from all sources at a medium likelihood of flooding can be seen in Figure 4. The highest risk of river flooding is from the River Esk to Musselburgh. The highest risk of coastal flooding is from the Firth of Forth to Musselburgh and Inveresk. The highest risk of surface water flooding is in Wallyford and Pinkie Brae (Musselburgh). v3.0a Page 1 of 5 The economic damages incurred for each return period can be seen in Figure 3. For this PVA the highest damages are to residential property followed by damages to non-residential properties. In 2010 Scottish Water carried out a Flood Risk Assessment Study of 292 non infrastructure water and wastewater assets across Scotland that were within the 1 in 200 year flood extent. Of the assets assessed, no water assets and one wastewater asset were identified as being at risk of flooding within this PVA. Table 1: Summary of flood impacts from all sources High likelihood Medium likelihood Low likelihood No. of 280 1,300 1,600 Residential Properties at risk No. of Non- 60 270 320 Residential Properties at risk No. of People 620 2,800 3,500 at risk <10 Community <10 Community <10 Community Facilities Facilities Facilities Community <10 Educational <10 Educational <10 Educational Facilities at Buildings. Buildings. Buildings. risk 1 Educational <10 Care Homes <10 Care Homes Building 1 Care Home <10 utilities 10 utilities 10 utilities Utilities at <10 Energy sites ~10 Energy sites ~10 Energy sites risk <10 Scottish <10 Scottish Water Water Assets Assets 7 Roads affected at 26 7 Roads affected at 83 8 Roads affected at 106 locations locations locations 5 A Roads 5 A Roads 5 A Roads 2 B Roads 2 B Roads 3 B Roads Transport Links at risk 1 Railway route 1 Railway route 1 Railway route affected (excluding affected at 6 locations affected at 11 at 11 locations minor roads) Berwick-upon- locations Berwick-upon- Tweed to Berwick-upon- Tweed to Edinburgh Edinburgh Tweed to Edinburgh 0.3 km2 0.3 km2 0.3 km2 Designated 2 1 SSSI 1 SSSI 1 SSSI Areas (km ) 1 SPA 1 SPA 1 SPA at risk 1 SAC 1 SAC 1 SAC No. of 9 10 10 Cultural Heritage Sites at risk Agricultural 0.3 km2 0.6 km2 0.7 km2 Land at risk (km2) v3.0a Page 2 of 5 120,000,000 100,000,000 80,000,000 Agriculture Vehicles 60,000,000 Roads Damages £ Damages 40,000,000 Non Residential Residential 20,000,000 0 1 in 10yr 1 in 50yr 1 in 100yr 1 in 200yr 1 in 1000yr Figure 3: Damages by flood frequency from all sources Figure 4: Impacts from all sources at a medium likelihood of flooding v3.0a Page 3 of 5 Summary of existing local actions to manage risk There are no formal flood protection/prevention schemes constructed under the Flood Prevention (Scotland) Act 1961 or the Flood Risk Management (Scotland) Act 2009 to reduce the risk of flooding. Other measures may exist that were not constructed under the 1961 or the 2009 Acts but do reduce the impact of flooding, this may include other structures, natural features and natural flood management measures. These other measures can be seen in the river, coastal and surface water flooding report Appendixes. There are 3 flood warning target areas within this PVA: Musselburgh - River flood warning, Esk Portobello Esplanade - Coastal flood warning, Firth of Forth Musselburgh Coastal - Coastal flood warning, Firth of Forth SEPA and the local authorities work closely with many other organisations that have flooding related duties and interests such as the police, fire & rescue services, the Scottish Government and the Scottish Flood Forum. SEPA and the local authorities, often in partnership with these organisations, undertake various awareness raising campaigns that include community events, information leaflets, educational plays in schools, the use of social media and advertising. In addition to the above, the following community groups that help with flood resilience are known to operate within this PVA: East Lothian Bio-diversity Group East Lothian Tenants and Residents Panel Musselburgh Waterfront Group Musselburgh and Inveresk Community Council Numerous local community councils are also known to operate throughout the East Lothian Council district. The following local incentives or subsidies have also been put in place in order to provide property owners with property level resilience/resistance measures: The City of Edinburgh Council owns 450m of temporary pallet barriers that can be utilised to protect properties from river flooding. In addition to this, the Council also owns 8,000 sandbags and there are a further 1,500 sandbags located in fire stations throughout the City which can be utilised by the public during flood events. The Council also operates Emergency Action Packs that are used to determine where people should be deployed during flood events. This includes drawings, maps and sandbag construction drawings East Lothian Council strategically deploy temporary flood barriers and sand bags when properties are threatened by flooding History of flooding The following river flood event has been identified as significant: 13 August 1948, River Esk: Evacuation required in Musselburgh after flooding occurred in Eskside West, Eskside East, Shorthope Street, Millhill and areas of the High Street v3.0a Page 4 of 5 The following coastal flood event has been identified as significant: 30 March 2010: A tidal surge coinciding with the highest mean tides of the year caused extensive flooding along the East Coast of Scotland, with the Firth of Forth being one of the worst affected areas. Locations within this coastal area affected included Leith, Musselburgh, Prestonpans, Port Seton, Dunbar and North Berwick. Impacts included flooding of properties, damage to harbours, seawalls and roads with Edinburgh City Council estimating the costs to repair damages in the region of 650,000 In addition to the above, there is a history of groundwater flooding in Musselburgh, particularly around the Pinkie area. v3.0a Page 5 of 5 Potentially Vulnerable Area: 10/22 - Lasswade, Penicuik, Dalkeith, Musselburgh Local Plan District Local Authorities Main Catchment 10 - Forth Estuary Midlothian, City of River Esk (Lothian) Edinburgh, East Lothian Background This Potentially Vulnerable Area (PVA) covers an area of 97km2 (Figure 1). Within this PVA approximately 300 residential properties are at a medium likelihood of flooding from one or more sources. The total Annual Average Damages (AAD) from all sources of flooding are approximately £1.7 million (this includes damages to residential properties, non-residential properties, transport and agriculture). The majority of these damages are caused by surface water flooding (Figure 2). 37% River 63% Surface Figure 2: Annual Average Damages by flood source Figure 1: Potentially Vulnerable Area 10/22 Summary of impacts from all sources of flooding Approximately 300 residential properties and 320 non-residential properties are at a medium likelihood of flooding from one or more sources. A summary of the impacts from all sources of flooding can be seen in Table 1 and a map showing the impacts from all sources at a medium likelihood of flooding can be seen in Figure 4. The highest risk of river flooding is from the River Esk, the River South Esk, the River North Esk and the Loan Burn to Musselburgh, Dalkeith and Newbattle, Lasswade and Bonnyrigg and Penicuik. The highest risk of coastal flooding is from the River Esk to Musselburgh and Inveresk (Musselburgh). The highest risk of surface water flooding is in Dalkeith, Lasswade and Bonnyrigg. v3.0a Page 1 of 5 The economic damages incurred for each return period can be seen in Figure 3. For this PVA the highest damages are to roads followed by damages to non-residential properties.