Does LA21 flood?

Yes — parts of the LA21 district carry real flood risk: 16 of its 36 at-risk postcodes reach the Environment Agency's High likelihood band. The LA21 postcode district sits close to Coniston, Satterthwaite, Jeffy Knotts and surrounding villages in parts of Westmorland and Furness and Cumberland.

36 postcodes in the LA21 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 16 high, 10 medium, 10 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 LA21 postcodes are at risk?

Rivers and flooding history near LA21

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

Coniston Church Bridge on the Church Beck — 0.7 km away, highest on record 1.72m
Brown Howe on the Coniston Water — 6.2 km away, highest on record 3.04m
Eel House Bridge on the Cunsey Beck — 7.4 km away, highest on record 1.85m
Jeffy Knotts on the River Brathay — 8.7 km away, highest on record 4.50m

230 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (2 at warning level or above), most recently 24 March 2026. Warnings cover flood areas, not individual addresses.

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

Storm Ciara 09_02_2020 (2020) — about 21.9 km from the centre
Coniston 05_12_2015 (2015) — about 0.7 km from the centre
Coniston Sewage November 2009 Flooding (2009) — about 0.5 km from the centre
Coniston November 2009 Flooding (2009) — about 0.8 km from the centre

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in LA21? 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

LA20 LA22 LA19 LA23 LA18 LA17 LA16 LA15

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.