2.3.12 Ellon (Potentially Vulnerable Area 06/12)
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North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) 2.3.12 Ellon (Potentially Vulnerable Area 06/12) Local Plan District local authority Main catchments River Ythan North East Aberdeenshire Council Buchan coastal Background This Potentially Vulnerable Area is centred on The main river in the area is the Ythan, which Ellon. It is approximately 19km 2. is tidally influenced downstream of Ellon. The A920, A948, B9005 and a short section There are approximately 110 residential and of the A90 pass through the area. 40 non-residential properties at risk of flooding. The Annual Average Damages are approximately £300,000 with the majority due to river flooding. River 75% Coastal <1% Surface water 25% Annual Average Damages by flood source Reproduced from North East Flood Risk Management Strategy, SEPA (December 2015) Summary of flooding impacts The river flood risk comes from the River Ythan and its smaller tributaries, including Modley Burn and Broomies Burn. Roads at risk of flooding include the A920, A948 and A90. One school is at risk of flooding. Three designated cultural heritage sites and small areas of designated environmental sites are shown to be at risk. For this Potentially Vulnerable Area the highest damages are to residential properties followed by damages to non-residential properties. 168 North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) History of flooding There are two recorded floods from the Modley Burn in Ellon. In 2000 a wall collapsed, causing flooding. In 2002 the basements of property located on the culverted section of the burn flooded due to water backing up. In 2004, two properties in Findhorn Gardens flooded due to runoff from the adjacent housing development. In 2009 there was a flood from Broomies Burn, which affected Castle Way Industrial Estate, Ellon and damaged two bridges. Two industrial units and a school were affected. Flooding in December 2015 resulted in damage to over 80 Properties within Ellon. 18 homes evacuated in the Meadows area and an electricity substation flooded causing power cuts to 150 homes. 37 people attended rest centre in Ellon. The road between Ythanbank and Methlick was closed. Objectives to manage flooding in Potentially Vulnerable Area 06/12 Objectives provide a common goal and shared ambition for managing floods. These objectives have been set by SEPA and agreed with flood risk management authorities following consultation. They were identified through an assessment of the underlying evidence of the causes and impacts of flooding. Target areas have been set to focus actions; they do not necessarily correspond to areas at risk in SEPA’s flood map. The objectives below have been set for Ellon Potentially Vulnerable Area. Reduce flood risk in Ellon from the River Ythan Indicators: Target area: 80 people £58,000 Annual Average Damages from residential properties £6,200 Annual Average Damages from non- residential properties Objective ID: 601201 © Crown Copyright. All rights reserved. SEPA lic.no. 100016991 (2015) Reproduced from North East Flood Risk Management Strategy, SEPA (December 2015) 169 North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) Reduce flood risk in Ellon from the Modley Burn Indicators: Target area: 80 people £80,000 Annual Average Damages from residential properties £20,000 Annual Average Damages from non- residential properties Objective ID: 601202 © Crown Copyright. All rights reserved. SEPA lic.no. 100016991 (2015) Reproduced from North East Flood Risk Management Strategy, SEPA (December 2015) Reduce flood risk in Ellon from the Broomies / Bronie Burn Indicators: Target area: £4,100 Annual Average Damages from residential properties £37,000 Annual Average Damages from non- residential properties Objective ID: 601203 © Crown Copyright. All rights reserved. SEPA lic.no. 100016991 (2015) Reproduced from North East Flood Risk Management Strategy, SEPA (December 2015) 170 North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) Target area Objective ID Indicators within PVA Applies across Avoid an overall increase in flood risk 600001 110 residential North East Local properties Plan District £300,000 Annual Average Damages Applies across Reduce overall flood risk 600002 110 residential North East Local properties Plan District £300,000 Annual Average Damages Applies across Organisation such as utility companies and North East Local Historic Environment Scotland actively Plan District maintain and manage their own assets, including the risk of flooding. These actions are not detailed further in the Flood Risk Management Strategies. Reproduced from North East Flood Risk Management Strategy, SEPA (December 2015) Actions to manage flooding in Potentially Vulnerable Area 06/12 Actions describe where and how flood risk will be managed. These actions have been set by SEPA and agreed with flood risk management authorities following consultation. Selection of actions to deliver the agreed objectives was based on a detailed assessment and comparison of economic, social and environmental criteria. The actions shaded and then described below have been selected as the most appropriate for Ellon Potentially Vulnerable Area. Selected actions Flood Natural flood Community Property level New flood Site protection protection management flood action protection warning plans scheme/works works groups scheme Flood Natural flood Maintain flood Awareness Surface water Emergency protection management warning raising plan/study plans/response study study Maintain flood Strategic Flood Planning protection mapping and Self Help Maintenance forecasting policies scheme modelling 171 North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) The delivery of selected actions by year over the six-year plan cycle is summarised below. Delivery of selected actions Year 2 Year 3 Year 4 Year 5 Year 6 Year 1 (2016/17) (2017/18) (2018/19) (2019/20) (2020/21) (2021/22) Flood protection study Awareness raising Emergency plans/response Strategic mapping and modelling (Scottish Water) Flood forecasting Self help Maintenance Planning Policy 172 North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) Action (ID): FLOOD PROTECTION STUDY (6012010005) Objective (ID): Reduce flood risk in Ellon from the Broomies / Bronie Burn (601203) Reduce flood risk in Ellon from the Modley Burn (601202) Reduce flood risk in Ellon from the River Ythan (601201) Delivery lead: Aberdeenshire Council Priority: National: Within local authority: 55 of 168 1 of 12 Status: Scheduled Indicative delivery: 2016-2019 Description: Aberdeenshire Council will undertake a flood protection study to evaluate options for flood management to reduce the risk of flooding in Ellon from the River Ythan, Modley Burn and Broomies / Bronie Burn. The study will be completed by the Summer 2019 The study has the potential to benefit 77 residential properties, 18 non-residential properties, sections of road network and a school at risk of flooding in this location, with potential damages avoided of up to £6.1 million. A reduction in flood risk would have a positive benefit to the health and wellbeing of the community and socially vulnerable people located within the study area and may also contribute to enhanced biodiversity and economic activity. The study will take a sustainable and integrated approach by coordinating with the river basin management plan. It will be undertaken with due consideration to internationally, nationally and locally designated sites including listed buildings. It will also explore opportunities for enhancing biodiversity and for promoting economic activity and social wellbeing. The study will consider natural flood management measures along with traditional flood defences by exploring opportunities for online and offline flood storage, flow control structures, modification to conveyance capacity of watercourses by sediment and channel management, modifications to the bridges to improve conveyance, the construction of direct defences, river / floodplain restoration, runoff control through catchment and riparian tree planting, land-use and land- management changes, etc. Additionally, the study will also consider property level protection and property relocation. It is expected that the recommended flood protection scheme will comprise a combination of such measures to ensure a sustainable and integrated approach to flood risk management by due consideration of impacts on economy, society, environment and cultural heritage. (continued) 173 North East Local Plan District – Local Flood Risk Management Plan Ellon (Potentially Vulnerable Area 06/12) Aberdeenshire Council will coordinate with SEPA, Scottish Water, SNH, The Crown Estate, landowners and community groups as well as other relevant agencies and organisations. Aberdeenshire Council will undertake the study through the Local Planning District (LPD) partnership and / or through separate agreements. Funding for the study will be subject to Scottish Government’s block grant and capital support, and budget allocations over the six years of the Plan, 2016-2022. Potential impacts Economic: The study could benefit 77 residential and 18 non-residential properties at risk of flooding in this location, with potential damages avoided of up to £6.1 million. Social: