Dam Breach Risk Assessment

October 23, 2020

Acquiring planning permission can be tough, especially when dealing with the Lead Local Flood Authority (LLFA). In a recent project we were approached by an agricultural client to assist in gaining the necessary planning permission for winter storage reservoirs, to capture rainwater for summer irrigation. 


The LLFA raised concerns regarding the potential impact downstream, in the unlikely event of a breach of the reservoirs. Our surface water team developed a 2D hydraulic model to analyse and provide a detailed understanding of flow pathways and potential flood extents. The complex numerical analysis was presented in a simple way that all stakeholders could understand. 


The team’s innovative techniques to work within a short timescale, in combination with providing a strong evidence base allowed the development to successfully progress through the planning process. Find out exactly how we did it below.


Our specialists have the technical expertise, experience, and the tenacity to assist with a wide range of developments. If you require more information, advice or help relating to flood risk, get in touch with our technical lead, LeeClarke@envireauwater.co.uk

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By Rachael Plant July 22, 2025
We are excited to welcome Dr Anna Hitchmough to our growing team, who recently joined Envireau Water as a Principal Technical Specialist. With over 25 years of consultancy experience in hydrogeology, Anna brings a wealth of expertise to our team. Anna joins us from Carbon Zero Consulting/RSK Geosciences, where her career has centred around ground-source heat pump systems. In her most recent role, Anna chaired RSK's Heat Decarbonisation Working Group and Hydrogeology Working Group. Anna brings extensive experience in quantitative risk assessments and NAPL characterisation and has completed significant work on several contaminated land projects, having previously served as Chair of the Geological Society's Contaminated Land Group. Anna's academic background stems from the University of Newcastle where she completed an MSc in Hydrology, followed by a PhD in Hydrogeology at the University of Birmingham. She is also a chartered geologist.
By Rachael Plant July 10, 2025
We're always excited to see our team grow, and we are thrilled to welcome Hannah to the team. Hannah joined our Scotland office at the end of June to gain some hydrogeological experience alongside completing her university studies, and we look forward to welcoming her officially in September where she will begin her career as a Hydrogeologist. Prior to joining, Hannah completed a BSc in Environmental Sciences at University of Glasgow and is currently working towards completing an MSc in Hydrogeology at the University of Strathclyde. During her masters and undergraduate degree, Hannah has participated in various fieldwork activities where she developed an in-depth understanding of applied hydrology, soil analysis and mapping techniques.
By Rachael Plant July 8, 2025
Our team just keeps on growing and we are delighted to welcome Rob Pickersgill as our newest member! Rob joined us at the end of June, bringing extensive experience across both hydrology and civil engineering, with a particular focus on hydraulic modelling, Flood Risk Assessments (FRAs), and Discharge Impact Assessments. Rob's academic background stems from the University of Nottingham, where he completed a MEng in Engineering, followed by an MSC in Global Urban Development and Planning at the University of Manchester. Rob joins our specialist surface water team and will be based at the RSK Group office in Bristol, providing hydrological services to a range of projects for our diverse client base, primarily within the development sector.
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By Rachael Plant July 22, 2025
We are excited to welcome Dr Anna Hitchmough to our growing team, who recently joined Envireau Water as a Principal Technical Specialist. With over 25 years of consultancy experience in hydrogeology, Anna brings a wealth of expertise to our team. Anna joins us from Carbon Zero Consulting/RSK Geosciences, where her career has centred around ground-source heat pump systems. In her most recent role, Anna chaired RSK's Heat Decarbonisation Working Group and Hydrogeology Working Group. Anna brings extensive experience in quantitative risk assessments and NAPL characterisation and has completed significant work on several contaminated land projects, having previously served as Chair of the Geological Society's Contaminated Land Group. Anna's academic background stems from the University of Newcastle where she completed an MSc in Hydrology, followed by a PhD in Hydrogeology at the University of Birmingham. She is also a chartered geologist.
By Rachael Plant July 10, 2025
We're always excited to see our team grow, and we are thrilled to welcome Hannah to the team. Hannah joined our Scotland office at the end of June to gain some hydrogeological experience alongside completing her university studies, and we look forward to welcoming her officially in September where she will begin her career as a Hydrogeologist. Prior to joining, Hannah completed a BSc in Environmental Sciences at University of Glasgow and is currently working towards completing an MSc in Hydrogeology at the University of Strathclyde. During her masters and undergraduate degree, Hannah has participated in various fieldwork activities where she developed an in-depth understanding of applied hydrology, soil analysis and mapping techniques.
By Rachael Plant July 8, 2025
Our team just keeps on growing and we are delighted to welcome Rob Pickersgill as our newest member! Rob joined us at the end of June, bringing extensive experience across both hydrology and civil engineering, with a particular focus on hydraulic modelling, Flood Risk Assessments (FRAs), and Discharge Impact Assessments. Rob's academic background stems from the University of Nottingham, where he completed a MEng in Engineering, followed by an MSC in Global Urban Development and Planning at the University of Manchester. Rob joins our specialist surface water team and will be based at the RSK Group office in Bristol, providing hydrological services to a range of projects for our diverse client base, primarily within the development sector.
By Rachael Plant June 17, 2025
Desertification and drought are two of the most pressing environmental challenges of the 21st century. Exacerbated by climate change, the devastating effects of both can be felt across the globe, with an estimated 40% of the world's population impacted by water scarcity events. As global temperatures continue to rise, and severe weather events increase, regions across the globe face the potential for increased frequency and severity of droughts, often progressing rapidly and unexpectedly. As of 29th May this year, a drought was officially declared in parts of the UK, having experienced the driest start to Spring in over 130 years. Whilst the recent rainfall at the start of June has helped to stabilise concerns, uncertainty for the months ahead still remain. How is the UK landscape affected by drought?
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