Does CA18 flood?

Yes — parts of the CA18 district carry real flood risk: 7 of its 10 at-risk postcodes reach the Environment Agency's High likelihood band. The CA18 postcode district covers Millom Without, close to Eskdale Green, Wasdale, Calder Bridge, and surrounding villages in Cumberland.

10 postcodes in the CA18 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 7 high, 2 medium, 1 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

Free preview first · full report £19

Which CA18 postcodes are at risk?

CA18 1RL up to High CA18 1RT up to High CA18 1RW up to High CA18 1SG up to High CA18 1SQ up to High CA18 1ST up to High CA18 1SW up to High CA18 1SD up to Medium CA18 1SE up to Medium CA18 1RR up to Low

Rivers and flooding history near CA18

The rivers that matter here, each monitored live on FloodRadar:

Cropple How on the River Esk — 3.5 km away, highest on record 2.36m
Galesyke on the River Irt — 8.3 km away, highest on record 2.01m
Calder Hall on the River Calder — 10.4 km away, highest on record 2.22m
Ulpha on the River Duddon — 11.1 km away, highest on record 2.07m

134 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (22 at warning level or above), most recently 4 April 2026. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

Storm Ciara 09_02_2020 (2020) — about 35.2 km from the centre
Ravenglass 30th August 2012 (2012) — about 1.4 km from the centre
Waberthwaite 30th August 2012 (2012) — about 2.3 km from the centre
Holmrook November 2009 flooding (2009) — about 3.8 km from the centre

🏠 Buying or renting in CA18? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

CA17 CA19 CA16 CA20 CA15 CA21 CA14 CA22

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.