Does BS20 flood?

Yes — parts of the BS20 district carry real flood risk: 37 of its 263 at-risk postcodes reach the Environment Agency's High likelihood band. The BS20 postcode district covers Portishead East, Portishead South, Portishead North, Pill, close to Avonmouth, Wraxall Nailsea, Leigh Woods, and surrounding villages in parts of City of Bristol and North Somerset.

263 postcodes in the BS20 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 37 high, 6 medium, 11 low, 209 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 BS20 postcodes are at risk?

BS20 0AD up to High BS20 0AF up to High BS20 0AH up to High BS20 0AQ up to High BS20 0AS up to High BS20 0AT up to High BS20 0AU up to High BS20 0BB up to High BS20 0BD up to High BS20 0BE up to High BS20 0BG up to High BS20 0BL up to High BS20 0BP up to High BS20 0EJ up to High BS20 0EL up to High BS20 0EP up to High BS20 0ES up to High BS20 0EU up to High BS20 0HJ up to High BS20 0HL up to High BS20 0JP up to High BS20 0JU up to High BS20 0QH up to High BS20 6JZ up to High BS20 7AF up to High BS20 7HA up to High BS20 7HF up to High BS20 7HU up to High BS20 7JA up to High BS20 7PG up to High BS20 7TR up to High BS20 7TW up to High BS20 7TX up to High BS20 7UB up to High BS20 7XF up to High BS20 7XL up to High BS20 7XQ up to High BS20 0BN up to Medium BS20 0EN up to Medium BS20 0JS up to Medium BS20 7HB up to Medium BS20 7RY up to Medium BS20 8DR up to Medium BS20 0BH up to Low BS20 0BJ up to Low BS20 0DJ up to Low BS20 0ET up to Low BS20 0EZ up to Low BS20 0HT up to Low BS20 0NG up to Low BS20 7HX up to Low BS20 7TN up to Low BS20 7TQ up to Low BS20 7TY up to Low BS20 6AA up to Very low BS20 6AB up to Very low BS20 6AE up to Very low BS20 6AF up to Very low BS20 6AG up to Very low BS20 6AH up to Very low BS20 6AJ up to Very low BS20 6AL up to Very low BS20 6AN up to Very low BS20 6AQ up to Very low BS20 6AW up to Very low BS20 6BJ up to Very low BS20 6BL up to Very low BS20 6BN up to Very low BS20 6BQ up to Very low BS20 6BT up to Very low BS20 6BY up to Very low BS20 6BZ up to Very low BS20 6EH up to Very low BS20 6EL up to Very low BS20 6EN up to Very low BS20 6PJ up to Very low BS20 6PL up to Very low BS20 6PN up to Very low BS20 6PP up to Very low BS20 6PR up to Very low BS20 6PT up to Very low BS20 6PW up to Very low BS20 6PY up to Very low BS20 6PZ up to Very low BS20 6QA up to Very low BS20 6QB up to Very low BS20 6QD up to Very low BS20 6QE up to Very low BS20 6QF up to Very low BS20 6QG up to Very low BS20 6QH up to Very low BS20 6QJ up to Very low BS20 6QL up to Very low BS20 6QN up to Very low BS20 6QW up to Very low BS20 6QY up to Very low BS20 6QZ up to Very low BS20 6RL up to Very low BS20 6RZ up to Very low BS20 6SZ up to Very low BS20 6TE up to Very low BS20 6UN up to Very low BS20 6UP up to Very low BS20 6UR up to Very low BS20 6US up to Very low BS20 6UT up to Very low BS20 6UU up to Very low BS20 6UW up to Very low BS20 6UX up to Very low BS20 6UY up to Very low BS20 6UZ up to Very low BS20 6XY up to Very low BS20 6XZ up to Very low BS20 6YA up to Very low BS20 6YB up to Very low BS20 6YD up to Very low BS20 6YE up to Very low BS20 6YF up to Very low BS20 6YG up to Very low BS20 6YH up to Very low BS20 6YJ up to Very low BS20 6YL up to Very low BS20 6YN up to Very low BS20 6YP up to Very low BS20 6YQ up to Very low BS20 6YR up to Very low BS20 6YS up to Very low BS20 6YT up to Very low BS20 6YU up to Very low BS20 6YW up to Very low BS20 6YX up to Very low BS20 6YY up to Very low BS20 6ZE up to Very low BS20 7AA up to Very low BS20 7AE up to Very low BS20 7AJ up to Very low BS20 7AN up to Very low BS20 7AQ up to Very low BS20 7AR up to Very low BS20 7AS up to Very low BS20 7AT up to Very low BS20 7AW up to Very low BS20 7AX up to Very low BS20 7AY up to Very low BS20 7BA up to Very low BS20 7BB up to Very low BS20 7BF up to Very low BS20 7BJ up to Very low BS20 7BL up to Very low BS20 7BN up to Very low BS20 7BP up to Very low BS20 7BQ up to Very low BS20 7BX up to Very low BS20 7BY up to Very low BS20 7DB up to Very low BS20 7DD up to Very low BS20 7DE up to Very low BS20 7DF up to Very low BS20 7DH up to Very low BS20 7DL up to Very low BS20 7EA up to Very low BS20 7EL up to Very low BS20 7FB up to Very low BS20 7FF up to Very low BS20 7FH up to Very low BS20 7FJ up to Very low BS20 7FL up to Very low BS20 7FN up to Very low BS20 7FP up to Very low BS20 7FR up to Very low BS20 7FS up to Very low BS20 7FT up to Very low BS20 7FU up to Very low BS20 7GA up to Very low BS20 7GD up to Very low BS20 7GF up to Very low BS20 7GG up to Very low BS20 7GH up to Very low BS20 7HY up to Very low BS20 7JG up to Very low BS20 7JN up to Very low BS20 7JQ up to Very low BS20 7JS up to Very low BS20 7JW up to Very low BS20 7JX up to Very low BS20 7JY up to Very low BS20 7LA up to Very low BS20 7LB up to Very low BS20 7LD up to Very low BS20 7LE up to Very low BS20 7LF up to Very low BS20 7LG up to Very low BS20 7LH up to Very low BS20 7LJ up to Very low BS20 7LL up to Very low BS20 7LN up to Very low BS20 7LP up to Very low BS20 7LQ up to Very low BS20 7LR up to Very low BS20 7LS up to Very low BS20 7LT up to Very low BS20 7LU up to Very low BS20 7LW up to Very low BS20 7LX up to Very low BS20 7LZ up to Very low BS20 7NA up to Very low BS20 7NJ up to Very low BS20 7NQ up to Very low BS20 7NS up to Very low BS20 7NT up to Very low BS20 7NW up to Very low BS20 7NY up to Very low BS20 7NZ up to Very low BS20 7PA up to Very low BS20 7PB up to Very low BS20 7PD up to Very low BS20 7PE up to Very low BS20 7PH up to Very low BS20 7PJ up to Very low BS20 7PL up to Very low BS20 7PR up to Very low BS20 7PS up to Very low BS20 7PT up to Very low BS20 7PU up to Very low BS20 7PW up to Very low BS20 7QA up to Very low BS20 7QB up to Very low BS20 7QE up to Very low BS20 7QH up to Very low BS20 7QJ up to Very low BS20 7QL up to Very low BS20 7QN up to Very low BS20 7QT up to Very low BS20 7QX up to Very low BS20 7QY up to Very low BS20 7QZ up to Very low BS20 7RA up to Very low BS20 7RB up to Very low BS20 7RD up to Very low BS20 7RE up to Very low BS20 7RF up to Very low BS20 7RL up to Very low BS20 7RX up to Very low BS20 7SG up to Very low BS20 7SH up to Very low BS20 7SS up to Very low BS20 7ST up to Very low BS20 7SW up to Very low BS20 7SX up to Very low BS20 7SY up to Very low BS20 7SZ up to Very low BS20 7TA up to Very low BS20 7TF up to Very low BS20 7TG up to Very low BS20 7TL up to Very low BS20 7UG up to Very low BS20 7UH up to Very low BS20 7WW up to Very low BS20 7XJ up to Very low BS20 7XW up to Very low BS20 8LR up to Very low BS20 8PL up to Very low BS20 8PR up to Very low

Rivers and flooding history near BS20

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

725 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (176 at warning level or above), most recently 29 September 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 BS20? 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

BS21 BS22 BS23 BS16 BS24 BS15 BS25 BS14

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.