Southwest Environmental Limited

Exeter Flood Risk Assessments (FRA)

Are you planning a development in Exeter, East Devon, or Mid Devon? At Southwest Environmental Limited, our Exeter office provides highly technical Flood Risk Assessments (FRA). We help you navigate Environment Agency regulations, local planning policies, and hydrological constraints unique to the River Exe catchment.

Hyper-Local Exeter Flood Data & Modelling

Exeter's flood dynamics are shaped by the River Exe, its tributaries (such as the River Creedy and Alphin Brook), and steep surrounding topography that creates surface water risks during intense rainfall events. Local authorities require strict alignment with Exeter City Council and Devon County Council flood strategies. We utilize site-specific data including:

• Climate Change Adjustments: We incorporate 1-in-100-year climate change allowances to future-proof residential and commercial schemes across Devon.
• Devon SuDS Guidance: Designing surface water drainage systems that restrict discharge to greenfield rates, satisfying Lead Local Flood Authorities (LLFA).
• Sequential & Exception Tests: Delivering robust evidence required for planning permission in Flood Zones 2 and 3, particularly along river corridors and historic quayside locations.

Flood Warning and Evacuation Plans (FWEP)

While an FRA identifies the level of risk, planning officers frequently request a Flood Warning and Evacuation Plan (FWEP) outlining practical safety measures. We develop safe refuge strategies and emergency escape routes tailored to local Exe flood warning zones.

Why Choose Our Exeter Team?

Operating from The Generator Quay House on Exeter Quay, we combine local GIS datasets with site testing to interpret complex flood data for Devon planning submissions. Whether you need a Sustainable Drainage Strategy or a full FRA, our consultants deliver practical planning solutions.

Contact our Exeter Office today on 01392 927 961 or email exeter@southwest-environmental.co.uk to discuss your Flood Risk Assessment requirements.

Example Projects & Case Studies

Our environmental consultants frequently address varied flooding challenges across the South West. Here are some examples from our weblog:

• Flood Depth & Flow Data Analysis: An overview of hydraulic modelling reports and how we utilize climate change adjusted flood depths.
• Flood Risk Assessment Data (Blog): Discussing third-party data collection to accurately characterize flood risk on complex sites.
• 60 Day Rule for Leisure & Flood Risk: Guidance on submitting site-specific flood risk assessments for tourism developments.
• Recent FRA Projects & Climate Change Allowances: Case studies detailing finished floor levels (FFL) to ensure long-term development resilience.

What Our Exeter Clients Say