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Bute - Rothesay - Castle - High Street across the moatPhoto: Rob Farrow · CC BY-SA 2.0
DHazard risk Grade
Flood & hazards in Rothesay · SEPA

Rothesay is a river town: 9% of its homes are at high or medium risk from rivers or the sea, more than in 93% of Scottish towns

On SEPA’s flood maps, “high or medium” means rivers or the sea reach a home at least once in 200 years on average, mostly as if there were no flood defences. Rothesay grades D for hazard risk.

Hazard risk Grade

Rothesay grades D for hazard risk

Flood risk from rivers and the sea, against Scotland’s towns.

Homes at high or medium flood risk (9%)Fewer than 6% of Scottish towns

The share of homes at high or medium risk from rivers and the sea, ranked against every Scottish town (SEPA’s maps measure flood risk differently from England’s and Wales’s, so Scottish towns are ranked among themselves): fewer homes at risk is better. Towns with none at high or medium risk are ordered by their share at low risk, so they don’t all share one score. Surface water isn’t graded: the map shows it.

Flood map

Where the water goes in Rothesay

Turn layers on and off. SEPA’s flood maps: where rivers and the sea, and heavy rain, can reach. They mostly leave flood defences out.

© OpenStreetMap contributors · © SEPA 2025
RiversSeaSurface waterSEPA’s colours: darker = more likelyRothesay’s locality

The river and sea risk follows the town’s rivers.

Rivers and the sea

9% of Rothesay’s homes are at high or medium risk from rivers or the sea

SEPA’s national flood maps, which mostly leave defences out. A further 1.5% are at low risk.

High risk3.9%of homes · 1 in 10 years or more often
Medium risk5.2%of homes · 1 in 10 to 1 in 200 years
Low risk1.5%of homes · 1 in 200 to 1 in 1,000 years
Where Rothesay sits among 296 Scottish towns
14%None
31%Under 0.5%
12%0.5–1%
13%1–2%
17%2–5%
8%5–10%Rothesay
5%10–20%
1%20% +

Share of each Scottish town’s homes at high or medium risk from rivers and the sea. 14% of Scottish towns have none; Rothesay has more than 93% of towns.

Towns its size: 102nd of 109 from the fewest homes at risk
#TownPeopleHigh or med.
1Beith North Ayrshire5,7730%
2Westhill Highland5,6810%
3Stonehouse South Lanarkshire5,5910%
…
100Eyemouth Scottish Borders3,6987%
101Peterculter Aberdeen City4,3598.4%
102Rothesay Argyll and Bute4,2069%
103Newton Stewart Dumfries and Galloway3,9379.9%
104Caol Highland3,20011%
…
108Tillicoultry Clackmannanshire4,48215%
109Innerleithen Scottish Borders3,15232%

Scottish towns of 3,000 to 6,000 people.

SEPA’s flood maps (2025) for rivers and the sea tested against every address in the town (ONS NSUL), each output area weighted by its Census 2022 households. Rivers and sea can overlap; the worse band counts.

Neighbours

Flood risk in the places around Rothesay

Share of homes at high or medium and at low risk from rivers and the sea. Tap a town for its page.

ABCD
TownPeopleHigh or mediumLowHazard
Rothesay4,2069%1.5%D
Largs10,9163%2.7%C−
Inverkip3,5420.8%0.2%B−
Dunoon7,9822.5%1.9%C−
Gourock10,0722.1%1.9%C

Rothesay has more homes at high or medium risk than any neighbour in the table.

Be ready

Get ready for what Rothesay faces

Free warnings, what to do in a cloudburst, and what to check before you move.

Get the warnings
  • Sign up free to SEPA’s Floodline for flood alerts and warnings by text or call.
  • Floodline: 0345 988 1188, 24 hours.
Sign up ↗
In a cloudburst
  • Surface water rises in minutes, often with no warning issued: stay out of underpasses and dips.
  • Keep the gullies and drains outside your home clear of leaves.
  • Report a blocked road drain to the council.
When the river rises
  • Never walk or drive through floodwater: 30 cm of moving water can float a car.
  • Move valuables, papers and medicines upstairs.
  • Turn off gas, electricity and water if you’re told to.
Before you buy or rent in Rothesay
  • Check the address on SEPA’s flood maps: they show rivers, the sea and surface water.
  • Read the Home Report: the seller’s property questionnaire asks whether the home has flooded.
  • Homes built before 2009 can get flood cover through Flood Re, the government-backed scheme; newer homes can’t.
How to read these numbers

What this data can and can’t tell you

  • Defences mostly left out. SEPA’s maps show where water can reach as if most flood defences weren’t there, except where its detailed modelling includes a formal scheme. A town behind a defence can look more exposed than it is.
  • One town, many streets. Risk is street by street. Check a specific address on SEPA’s flood maps before you buy or rent.
  • Scotland is measured differently. SEPA publishes no count of homes at risk, so each address in the town is tested against its map, as in Wales. SEPA’s medium band runs to 1 in 200 years (England’s stops at 1 in 100), and its high band starts at 1 in 10, so Scottish figures lean higher than English ones.

SEPA flood maps →

Questions about flooding and hazards in Rothesay

Does Rothesay flood?

9% of homes are at high or medium risk from rivers and the sea on SEPA’s flood maps, which mostly leave flood defences out. Rothesay grades D for hazard risk against Scotland’s towns.

Where can I find flood warnings for Rothesay?

SEPA issues flood alerts and warnings for Scotland through Floodline: sign up free for texts or calls, or ring 0345 988 1188, 24 hours.

Contains SEPA data © SEPA 2025. Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026.

Sources: SEPA Flood Maps (2025), river and coastal flood extents at high, medium and low likelihood, tested against every ONS NSUL address point (September 2026) in the locality; Scotland’s Census 2022 households by output area · TownRatings grades: our own summary of the data, ranked against Scotland’s towns only. All under the Open Government Licence v3.0.

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.