Does CA20 flood?

Yes — parts of the CA20 district carry real flood risk: 15 of its 28 at-risk postcodes reach the Environment Agency's High likelihood band. The CA20 postcode district covers Gosforth, close to Calder Bridge, Braystones, Wasdale, and surrounding villages in Cumberland.

28 postcodes in the CA20 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 15 high, 4 medium, 9 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

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Which CA20 postcodes are at risk?

Rivers and flooding history near CA20

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

Calder Hall on the River Calder — 2.6 km away, highest on record 2.22m
Braystones on the River Ehen — 5.6 km away, highest on record 2.41m
Galesyke on the River Irt — 7.5 km away, highest on record 2.01m
Egremont on the River Ehen — 8.4 km away, highest on record 3.28m

408 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (70 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 34.9 km from the centre
Calder Bridge 26th Jan 2013 (2013) — about 2.9 km from the centre
Wellington 30th August 2012 (2012) — about 1.6 km from the centre
Gosforth 30th August 2012 (2012) — about 0.4 km from the centre

🏠 Buying or renting in CA20? 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

CA19 CA21 CA18 CA22 CA17 CA23 CA16 CA24

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.