Flood Risk Assessment in Kendal

Our team at Unda use years of experience to prepare comprehensive flood risk assessments and drainage strategies for commercial and residential sites in Kendal. A flood risk assessment in Kendal shows your local planning authority that a development will stay safe from flooding for its whole lifetime, without pushing flood risk onto anyone else.

Kendal sits in the River Kent catchment, a steep, fast-responding catchment that drains the fells to the north and west of the town. We assess every source that matters here — the Kent and the Mint that run through the town, the surface water that overwhelms drains in heavy rain, and the groundwater that moves through the limestone beneath the lower town — then deal directly with the Environment Agency and Westmorland and Furness Council on your behalf. We guide architects, planning consultants, developers, landowners, home buyers and businesses through to a decision, whether the report is needed for planning, a property purchase, mortgage or insurance, BREEAM, or a surface-water drainage strategy.

If you need a quote or want to talk a site through, contact one of our experienced flood risk consultants on 01293 214444.

Kendal sits on one of the flashiest river systems in England: the Kent and its tributaries rise on the fells and react to heavy rain within hours, which is why Storm Desmond flooded around 2,150 properties here in December 2015 — so an assessment in Kendal has to read the river, the surface water and the town's new defences together.

Flood risk assessment in Kendal at a glance

• The River Kent runs through the town. Kendal lies on the floodplain of the Kent and the Mint, so parts of the town sit in Flood Zone 3 and are at high risk of river flooding.
• Around 2,150 properties flooded in December 2015. Storm Desmond produced the highest river flow ever recorded on the Kent — the largest flood in the town's history — hitting Mintsfeet and Sandylands hardest.
• A £76 million flood scheme is reshaping the town. The Environment Agency's Kendal Flood Risk Management Scheme protects around 1,480 homes and 1,150 businesses, yet defended sites still need an assessment for planning.
• Westmorland and Furness Council is your Lead Local Flood Authority. Since the 2023 reorganisation it leads on surface water, groundwater and ordinary watercourses; the Environment Agency leads on the Kent and the Mint.

Check flood risk anywhere in Kendal

Kendal is outlined below. Screen any postcode in the town against Environment Agency data for rivers and sea, surface water and the planning flood zones, with a climate outlook to 2125. It is an indicative first pass, not a substitute for a site-specific assessment.

Flood risk in Kendal: the River Kent, its tributaries and surface water

River flooding dominates Kendal. The town sits in the floodplain of the River Kent and the River Mint, which drain a large, steep upland catchment off the fells. Surface water now threatens low-lying streets in heavy rain, and groundwater moves through the limestone beneath the lower town — so many sites here face more than one source at once.

The Kent rises on the fells to the north and west of Kendal and is joined by the Sprint, the Mint and the Gowan before it reaches the town. The Sprint is often described as the fastest-rising river in England, and the catchment as a whole produces a very flashy response: prolonged rain on the uplands becomes a flood peak in Kendal within hours rather than days. Understanding which watercourse drives the risk on a given site, and how quickly it responds, is the heart of a credible flood modelling and assessment.

• Rivers (fluvial). The Kent and the Mint flood the valley floor through central and north Kendal. Land in Flood Zones 2 and 3 along these corridors almost always needs a flood risk assessment for planning.
• Surface water (pluvial). Now the most widespread flood risk in England. Intense rain overwhelms drains in the low-lying parts of the town. Since the 2025 PPG update, surface water on the Flood Map for Planning can trigger an assessment even on a Flood Zone 1 site — our note on critical drainage areas explains when.
• Groundwater. Below Kendal the solid geology is limestone, which outcrops in the bed of the Kent in places. Limestone and valley gravels can raise water tables that flood low ground and basements without showing on a river map — the source national maps miss, assessed within every groundwater flood risk assessment.
• Sewers and ordinary watercourses. Becks and the surface-water sewer network back up in heavy rain. These are the Lead Local Flood Authority's responsibility rather than the Environment Agency's — see the role the LLFA plays.

Mintsfeet and Sandylands are the textbook case for why a single map is never enough: the Kent floodplain runs against industrial and residential streets that also take surface water with nowhere to drain by gravity. A scheme there has to reconcile both. Our notes on how accurate flood maps are and on riparian responsibilities set out how these sources and duties interact.

A history of flooding in Kendal

These dated events are why the authorities here scrutinise development so closely, and why a flood risk assessment in Kendal has to be evidence-led rather than generic. Each one reshaped local policy and the flood defences a developer now has to design around.

• 2004 and January 2005. Heavy rain on 6–7 January 2005 flooded more than 100 properties, with peak Kent levels around 200mm above those of February 2004. Mintsfeet (around 20 homes and 40 commercial premises), Busher Walk, Aynam Road and Aikrigg End were worst affected.
• November 2009. The storms that devastated Cockermouth and Workington also flooded four properties at Benson Green from the Kent, and basements along Aynam Road and Lound Street.
• 5–6 December 2015 — Storm Desmond. The largest flood in Kendal's recorded history: around 2,150 properties flooded and the highest river flow ever recorded on the Kent, with Mintsfeet and Sandylands hardest hit. The Watchgate gauge in the Mint catchment recorded 181.8mm of rain in 48 hours onto ground already saturated by a wet November.
• A long and repeating record. Major flooding in 2004, 2005, 2009 and 2015 reflects a catchment that responds fast to rainfall — the central reason flood risk in Kendal has to be read from the river's behaviour, not a single map.

The Kendal Flood Risk Management Scheme — and why you still need a flood risk assessment

After Storm Desmond, the Environment Agency began a £76 million, catchment-based scheme to reduce flood risk across Kendal and the upriver communities of Burneside, Staveley and Ings. It is one of the largest flood schemes in the north of England — but a completed defence does not remove the need for a site-specific assessment.

• £76 million, delivered in three phases. Linear defences through the town, plus two flood storage areas and a 2km upper-catchment drain upstream that hold back the peak before it reaches Kendal.
• Phase 1 complete. Around 6km of walls, embankments and 14 flood gates along the Kent and the Mint through north Kendal.
• Phase 2 nearing completion. The Gooseholme section, including glass flood panels, reached a major milestone in March 2026, with that part of the scheme more than 90% complete.
• Designed to protect 1,480 homes and 1,150 businesses. Plus 82 community facilities; once complete the scheme is expected to remove around £880 million of potential future flood damage.

A defended site is not a risk-free site. The Environment Agency's Flood Map for Planning is drawn as if the new defences are not there, so much of central Kendal stays in Flood Zone 3 — and planning policy still requires the residual risk to be assessed over a development's lifetime.

That residual risk — the chance a defence is overtopped or fails — is exactly where a defended-site application is won or lost. Our explainers on residual flood risk and on why the long-term flood map cannot be used for planning set out why a scheme behind new defences in Kendal usually still needs a full assessment.

Planning policy and your Lead Local Flood Authority in Kendal

Two kinds of authority set the rules. The Environment Agency leads on the River Kent and the River Mint, which are main rivers. A Lead Local Flood Authority (LLFA) leads on surface water, groundwater and ordinary watercourses — for Kendal that is Westmorland and Furness Council.

Local government reorganisation abolished Cumbria County Council in 2023 and created Westmorland and Furness Council, which is now the LLFA for Kendal and a statutory consultee on surface water drainage for major development. A developer here deals with the council on drainage and with the Environment Agency on the main rivers, alongside the national role the Environment Agency plays in the planning system. Getting both on side early is what keeps an application moving rather than stalled by an LLFA drainage objection.

Your assessment and drainage strategy must satisfy national policy — the NPPF and its Planning Practice Guidance — and the local framework: the council's Local Flood Risk Management Strategy, the Westmorland and Furness Level 1 SFRA and the adopted Local Plan flood policies. Where a higher-risk site is involved, the Sequential and Exception Tests apply — a live area of planning law, as our note on the Yatton judgment shows. On drainage, the four pillars of SuDS and, where infiltration is proposed, infiltration testing to BRE 365 shape what the LLFA will accept.

What your flood risk assessment in Kendal must show

• The design flood level. The 1% annual probability (1-in-100-year) river event plus an Environment Agency climate change allowance, referenced to Ordnance Datum.
• Finished floor levels. Generally at least 600mm above the design flood level, reducible to 300mm only with high certainty.
• All sources of flooding. River, surface water, groundwater, sewers and any ordinary watercourse on the boundary — not just the Kent.
• Safe access and egress, and residual risk. Especially behind the new defences, the risk that remains if a defence is overtopped or fails, over the development's lifetime.

Development and flood risk assessment in Kendal

Kendal is the commercial heart of this part of Cumbria, and the kind of site you bring forward shapes the assessment you need. The right scope is the difference between a clean approval and a drainage objection that holds an application up for months.

• Town-centre regeneration and conversions. Sites near the Kent through central Kendal — Stramongate, Aynam Road and Kirkland — frequently sit in Flood Zones 2 and 3, needing finished floor levels, safe access and egress, and sometimes compensatory flood storage.
• Employment land at Mintsfeet and the business parks. The Mintsfeet industrial area and Westmorland Business Park flooded in 2015; commercial schemes here turn on river and surface water risk together, and often on a surface water drainage strategy.
• Residential infill and edge-of-town housing. New homes are a more vulnerable use, so a higher-risk site still has to pass the Sequential and Exception Tests before permission can be granted.
• Rural and upriver schemes. Conversions and new builds around Burneside, Staveley and the Kent valley often turn on ordinary watercourses, ground conditions and the right preliminary drainage design.

Climate change is not optional here. A Kendal assessment must apply the Environment Agency's allowances for higher river flows and rainfall over the development's lifetime — generally 100 years for housing — which sets floor levels, freeboard and how much attenuation a drainage scheme needs.

How Unda helps with flood risk assessment in Kendal

We act as the accurate translation layer between your scheme and the requirements set by the Environment Agency, Westmorland and Furness Council and national planning policy. We are experts on Kendal's flooding, not a generic report mill.

A flood risk assessment in Kendal from Unda assesses every credible source — the Kent and the Mint, surface water, groundwater through the limestone, sewers and any ordinary watercourse on the boundary — compares modelled flood levels against your proposed floor levels, sets safe access and egress, and recommends mitigation the regulators will accept. We are a CIWEM Business Partner with chartered members, and a senior consultant signs off every report. Where the council needs it, a surface-water drainage strategy sits alongside the assessment as a separate report so the two cases stay consistent and an objection has nowhere to land.

Flood risk assessments and related reports for every situation in Kendal

People need a flood risk assessment or drainage strategy in Kendal for many reasons. A flood risk assessment, a sequential or exception test and a drainage strategy are three distinct reports: they often travel together in a planning submission, but they answer different questions — is the site safe, should the development be here, and where does the surface water go.

• Flood risk assessment for planning. The site-specific report prepared to satisfy the NPPF, the Environment Agency and Westmorland and Furness Council. Groundwater and, where needed, flood modelling are assessed within it rather than as separate reports.
• Flood risk survey for a property purchase. An independent, property-specific survey for buyers in Kendal when a conveyancing search flags flood risk or a lender raises a concern.
• Flood risk assessment for insurance. Property-specific evidence where premiums have risen, cover has been restricted, or a property has flooded.
• Flood risk assessment for BREEAM. Structured around BREEAM Pol 03 for schemes pursuing certification.
• Sequential and Exception Tests. The locational case for development in a higher flood-risk part of Kendal.
• Surface water drainage and SuDS. A drainage strategy, the detailed discharge of drainage conditions, and early-stage preliminary drainage design.

You can screen a site yourself before you commit with our free tools: the flood risk map for a postcode, the live river levels map for current Kent and Mint readings, the geology and ground conditions checker for soakaway feasibility, the drainage calculators, and the BRE 365 infiltration rate calculator. For the wider county picture, see our flood risk assessments across Cumbria, or talk to our flood risk consultants and read more about Unda.

Kendal flood resources and contacts

The most reliable Kendal flood information comes from the lead authorities. For an immediate threat to life during a flood, always call 999; for a power cut during flooding, call 105.

• Check for flooding in Kendal. Environment Agency live warnings, river levels and maps at check-for-flooding.service.gov.uk; sign up for flood warnings or call Floodline on 0345 988 1188.
• Westmorland and Furness flood team. Report flooding and find developer guidance via the council's Flood and Coast Risk Management Team.
• Kendal Flood Risk Management Scheme. Progress and detail of the Environment Agency scheme at Westmorland and Furness Council.
• The 2015 flood investigation. The official Section 19 report on the Storm Desmond flood is published by the former Cumbria County Council.
• Live river context. See where the Kent and the Mint are running now on our live river levels map.

Flood risk assessment in Kendal: frequently asked questions