Flood Warning & Evacuation Plans

When do you need a FWEP? How do you write a FWEP? Why is a FWEP important? All questions covered in today's article!

What is a Flood Warning & Evacuation Plan

A Flood Warning & Evacuation Plan (FWEP), also known as a Flood Emergency Plan, is a document which provides site specific actions to take in preparation of and during a flood event. Its aim is to reduce the risk to ife, mitigate damage, and enable a safe and orderly evacuation of site users during a flood.

This aim is achieved by:

  • Raising awareness of the flood risk to the site.
  • Providing information on the Environment Agency Flood Warning Service (if applicable) and flood lead in times.
  • Detailing how the Plan is triggered, who is responsible for participating in the Plan, and how to disseminate flood warning information among site users.
  • Establishing safe access and egress routes to a safe refuge location.
  • Providing information on alternative safe refuge within the site, should evacuation not be possible.
  • Establishing procedures for implementing and maintaining the plan.

When is a Flood Warning & Evacuation Plan Required?

The NPPF states that applicants must provide evidence to show that the proposed development would be safe and that the residual flood risk can be overcome to the satisfaction of the Local Planning Authority and the Environment Agency. A Flood Evacuation Plan is therefore typically requested when a site is shown to be at residual risk of flooding which is not mitigated by the site’s flood mitigation strategy (either due to site constraints or because it is above the design requirements).  A FWEP is also required for more vulnerable sites – typically those “used for holiday or short-let caravans and camping” or “essential ancilliary sleeping or residential accommodation for staff” in water compatible development.

Who is responsible for approving a FWEP?

It is the responsibility of the Local Planning Authority to review and approve the Flood Evacuation Plan. The Environment Agency does not comment on the acceptability of Flood Evacuation Pans and there is no statutory requirement for them to do so.

How do you prepare a FWEP?

An flood waring & evacuation plan needs to take into account:

  • the warnings that might be available, inlcuding lead time
  • the safest way to leave a site, the route that should be taken and where you need to go.
  • the occupant risk profile, the water depth, velocity and hazard as well as more regional context regarding safe egress potential.

This can be a difficult thing to accurately produce and often will need more than a single option or procedure.  Aegaea are flood risk experts and therefore, to help prevent any delays through the planning process it is recommended that a flood risk professional, such as the specialists at Aegaea, prepare the Flood Warning & Evacuation Plan for your development. We can typically prepare this as part of your flood risk assessment, saving you time and money.

Please contact us today for more information.

Flood Warning & Evacuation Plan Experts

Ceri Metcalfe BEng
Graduate Engineer
I’m a Graduate Engineer with a BEng (Hons) degree in Civil Engineering and MSc in Civil Engineering (Environmental). Engineering was the career choice for me as it merged together my love for both...
> View Profile
Alix Rouvrais
Senior Engineer
I am a Senior Engineer for Aegaea Civils. I have vast experience in drainage, highways and infrastructure for both major and minor developments spanning across all sectors of the industry, along with...
> View Profile
Victoria Walker BSc (hons) MCIHT
I’m a Civil Engineer with extensive experience in Highways, Drainage and External Works design. During my career to date, I have designed and managed a wide range of projects from extensions to...
> View Profile
James Mahoney BSc FIHE CIHT
I am a Civil Engineer with over 27 years’ experience in the sector, specialising in the design of highways, infrastructure, drainage and external works. I work with local and national government...
> View Profile
Daniel Cunningham BSc
Flood Risk Consultant
I am a graduate flood risk consultant. I studied Geography at The University of the West of England and chose to do modules looking at rivers, coasts, and water management. My dissertation...
> View Profile
Lorna Kingsbury-Smith
Flood Risk Modelling Consultant
I’m a Flood Risk and Drainage Consultant at Aegaea with experience in hydraulic modelling and FRAs. My specialist area of expertise is Integrated Catchment Modelling and options development.
> View Profile
Daniel Cook
I’m a Chartered Water and Environment Manager and specialist Flood Risk Consultant, working in the environmental consultancy sector since 2011. Specialist Subject: flood risk policy!
> View Profile
Christopher Cameron-Hann
I’m a flood risk management, flood modelling and hydrology consultant. Specialist Subject: Flood Forecasting and Economic Analysis.
> View Profile
Nick Darling-Drewett
Principal Flood Risk Consultant
I’m a Principal Flood Risk Consultant at Aegaea with extensive experience in producing FRAs and drainage strategies. Specialist Subject: FRAs
> View Profile
Kirsty Tolson
Principal Flood Risk Consultant
I’m a Principal Flood Risk Consultant at Aegaea with extensive experience in initial due diligence, masterplan development or dealing with planning issues relating to Flood risk. Specialist subject:...
> View Profile
Douglas Swinbanks
Principal Flood Risk Engineer and Hydrologist
I’m a Principal Flood Risk Engineer and Hydrologist based in Edinburgh. Specialist Subject: Scotland Policy and Integrated Catchment Modelling.
> View Profile
Lauren Norman
BSc (Hons)
Senior Analyst
I’m Lauren and I am the Team Leader for Flood Modelling, based in the West Midlands. Specialist Subject: Estry TUFLOW modelling!
> View Profile
Oliver Harvey
Senior Flood Risk Consultant
I am a Senior Flood Risk Consultant at Aegaea with extensive experience in supporting developers and clients by providing flood risk and SuDS reports to ensure they achieve their aspirations for...
> View Profile
Alex Brennan
Senior Flood Risk Consultant
I am a Senior Flood Risk Consultant at Aegaea. I have a particular interest in Natural Flood Management Solutions and the application of GIS to flood risk management. My dissertation at the University...
> View Profile
Oliver Manston
Flood Risk Analyst
I’m an Analyst starting out my career in the flood management industry with Aegaea. I am currently based in Bristol after having completed a master’s in civil engineering at Swansea University....
> View Profile
Rebecca Thirkell
Modelling Principal Consultant and Lead Hydrologist
I’m a Modelling Principal Consultant Lead Hydrologist at Aegaea, based in the East Midlands.
> View Profile
Jack Allen
Flood Risk and Drainage Consultant
I am a Flood Risk and Drainage Consultant, with a BSc in Geography and a MSc in Water, Energy and the Environment. I have experience in writing flood risk assessments for both major and minor...
> View Profile
Amelia Rowntree
Flood Risk Analyst
I’m a graduate flood risk consultant, who has just completed my BSc honours degree at the University of Salford specialising in hydrology. This has always been a passion of mine from growing up with...
> View Profile

Request your free, expert quote now

Aegaea work alongside home owners, private developers, planning consultants, architects, local authorities, international development agencies and contractors. Aegaea know exactly how to help you.

Upload File(s)