Does BS11 flood?

Yes — parts of the BS11 district carry real flood risk: 7 of its 162 at-risk postcodes reach the Environment Agency's High likelihood band. The BS11 postcode district sits close to Avonmouth, Filton Bristol, Wraxall Nailsea and surrounding villages in parts of City of Bristol and North Somerset.

162 postcodes in the BS11 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 7 high, 12 low, 143 very 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 BS11 postcodes are at risk?

BS11 0YA up to High BS11 9BT up to High BS11 9FR up to High BS11 9RF up to High BS11 9XA up to High BS11 9XR up to High BS11 9YN up to High BS11 0YB up to Low BS11 0YD up to Low BS11 0YL up to Low BS11 0ZZ up to Low BS11 1AZ up to Low BS11 9AT up to Low BS11 9BB up to Low BS11 9BN up to Low BS11 9DB up to Low BS11 9DE up to Low BS11 9HS up to Low BS11 9XS up to Low BS11 0DD up to Very low BS11 0FD up to Very low BS11 0FJ up to Very low BS11 0FR up to Very low BS11 0QL up to Very low BS11 0RS up to Very low BS11 0YH up to Very low BS11 0YP up to Very low BS11 0YQ up to Very low BS11 0YS up to Very low BS11 0YW up to Very low BS11 8AB up to Very low BS11 8AD up to Very low BS11 8AE up to Very low BS11 8AF up to Very low BS11 8AG up to Very low BS11 8AP up to Very low BS11 8AQ up to Very low BS11 8AS up to Very low BS11 8AT up to Very low BS11 8AZ up to Very low BS11 8DB up to Very low BS11 8DJ up to Very low BS11 8DL up to Very low BS11 8DQ up to Very low BS11 8HT up to Very low BS11 9AA up to Very low BS11 9AD up to Very low BS11 9AF up to Very low BS11 9AH up to Very low BS11 9AJ up to Very low BS11 9AL up to Very low BS11 9AN up to Very low BS11 9AP up to Very low BS11 9AQ up to Very low BS11 9AR up to Very low BS11 9AS up to Very low BS11 9AW up to Very low BS11 9BE up to Very low BS11 9BJ up to Very low BS11 9BP up to Very low BS11 9BX up to Very low BS11 9BY up to Very low BS11 9DA up to Very low BS11 9DH up to Very low BS11 9DJ up to Very low BS11 9DL up to Very low BS11 9DN up to Very low BS11 9DQ up to Very low BS11 9DX up to Very low BS11 9EB up to Very low BS11 9ED up to Very low BS11 9EF up to Very low BS11 9EG up to Very low BS11 9EH up to Very low BS11 9EJ up to Very low BS11 9EL up to Very low BS11 9EN up to Very low BS11 9EP up to Very low BS11 9ER up to Very low BS11 9ES up to Very low BS11 9ET up to Very low BS11 9EU up to Very low BS11 9EW up to Very low BS11 9EX up to Very low BS11 9EY up to Very low BS11 9EZ up to Very low BS11 9FB up to Very low BS11 9FE up to Very low BS11 9FL up to Very low BS11 9FP up to Very low BS11 9FQ up to Very low BS11 9FS up to Very low BS11 9FW up to Very low BS11 9GQ up to Very low BS11 9HA up to Very low BS11 9HD up to Very low BS11 9HF up to Very low BS11 9HG up to Very low BS11 9HL up to Very low BS11 9HN up to Very low BS11 9HQ up to Very low BS11 9HR up to Very low BS11 9HU up to Very low BS11 9HW up to Very low BS11 9HZ up to Very low BS11 9JA up to Very low BS11 9JB up to Very low BS11 9JD up to Very low BS11 9JE up to Very low BS11 9JF up to Very low BS11 9JH up to Very low BS11 9JJ up to Very low BS11 9JN up to Very low BS11 9JR up to Very low BS11 9JS up to Very low BS11 9JT up to Very low BS11 9JU up to Very low BS11 9JW up to Very low BS11 9JX up to Very low BS11 9JY up to Very low BS11 9JZ up to Very low BS11 9LA up to Very low BS11 9LB up to Very low BS11 9LD up to Very low BS11 9LG up to Very low BS11 9LH up to Very low BS11 9LJ up to Very low BS11 9LL up to Very low BS11 9LN up to Very low BS11 9LP up to Very low BS11 9LQ up to Very low BS11 9LW up to Very low BS11 9NA up to Very low BS11 9NB up to Very low BS11 9ND up to Very low BS11 9NE up to Very low BS11 9NF up to Very low BS11 9NG up to Very low BS11 9NH up to Very low BS11 9NJ up to Very low BS11 9NN up to Very low BS11 9NQ up to Very low BS11 9NT up to Very low BS11 9NU up to Very low BS11 9NW up to Very low BS11 9NX up to Very low BS11 9NY up to Very low BS11 9NZ up to Very low BS11 9PA up to Very low BS11 9PB up to Very low BS11 9QD up to Very low BS11 9RJ up to Very low BS11 9RL up to Very low BS11 9TP up to Very low BS11 9YA up to Very low BS11 9YE up to Very low BS11 9YH up to Very low BS11 9YQ up to Very low BS11 9YR up to Very low BS11 9YS up to Very low BS11 9ZG up to Very low BS11 9ZZ up to Very low

Rivers and flooding history near BS11

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

646 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (140 at warning level or above), most recently 15 August 2026. Warnings cover flood areas, not individual addresses.

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

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

🏠 Buying or renting in BS11? 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

BS10 BS13 BS9 BS14 BS8 BS15 BS7 BS16

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.