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Does GU19 flood?

Yes — parts of the GU19 district carry real flood risk: 20 of its 33 at-risk postcodes reach the Environment Agency's High likelihood band. The GU19 postcode district covers Bagshot, close to Chobham, Blackwater, Mytchett, and surrounding villages in parts of Surrey and Hampshire.

33 postcodes in the GU19 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 20 high, 5 medium, 8 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 GU19 postcodes are at risk?

GU19 5AA up to High GU19 5AE up to High GU19 5AF up to High GU19 5AG up to High GU19 5AH up to High GU19 5AX up to High GU19 5AY up to High GU19 5AZ up to High GU19 5BA up to High GU19 5DP up to High GU19 5DR up to High GU19 5DX up to High GU19 5DY up to High GU19 5EF up to High GU19 5EQ up to High GU19 5JH up to High GU19 5JJ up to High GU19 5NB up to High GU19 5ND up to High GU19 5NF up to High GU19 5AR up to Medium GU19 5BE up to Medium GU19 5HD up to Medium GU19 5HL up to Medium GU19 5JW up to Medium GU19 5AJ up to Low GU19 5AL up to Low GU19 5AQ up to Low GU19 5AT up to Low GU19 5LP up to Low GU19 5NA up to Low GU19 5NE up to Low GU19 5PH up to Low

Rivers and flooding history near GU19

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

186 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006, most recently 6 February 2026. Warnings cover flood areas, not individual addresses.

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

🏠 Buying or renting in GU19? 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

GU18 GU20 GU17 GU21 GU16 GU22 GU15 GU23

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.