Does RG4 flood?

Yes — parts of the RG4 district carry real flood risk: 59 of its 152 at-risk postcodes reach the Environment Agency's High likelihood band. The RG4 postcode district covers Caversham, Thames, Emmer Green, close to Reading, Sonning, Charvil, and surrounding villages in parts of Wokingham and West Berkshire.

152 postcodes in the RG4 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 59 high, 59 medium, 34 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 RG4 postcodes are at risk?

RG4 5BG up to High RG4 5BQ up to High RG4 5BS up to High RG4 5BY up to High RG4 5JX up to High RG4 5LG up to High RG4 5LR up to High RG4 5LS up to High RG4 5LT up to High RG4 5LU up to High RG4 5LX up to High RG4 5LZ up to High RG4 5NA up to High RG4 6LP up to High RG4 6LQ up to High RG4 6TN up to High RG4 6TP up to High RG4 6TR up to High RG4 6TT up to High RG4 6TU up to High RG4 6TW up to High RG4 6TX up to High RG4 6TY up to High RG4 6TZ up to High RG4 6UR up to High RG4 6UT up to High RG4 7AH up to High RG4 7TH up to High RG4 7TL up to High RG4 7TP up to High RG4 7TQ up to High RG4 7TR up to High RG4 8AA up to High RG4 8AH up to High RG4 8AL up to High RG4 8BE up to High RG4 8BF up to High RG4 8BU up to High RG4 8BW up to High RG4 8DG up to High RG4 8DH up to High RG4 8DL up to High RG4 8DN up to High RG4 8DP up to High RG4 8DQ up to High RG4 8DU up to High RG4 8ED up to High RG4 8EF up to High RG4 8EG up to High RG4 8EH up to High RG4 8EL up to High RG4 8EN up to High RG4 8ET up to High RG4 8EW up to High RG4 8EX up to High RG4 8EY up to High RG4 9RA up to High RG4 9RB up to High RG4 9RD up to High RG4 5AA up to Medium RG4 5AB up to Medium RG4 5AD up to Medium RG4 5AE up to Medium RG4 5AH up to Medium RG4 5AJ up to Medium RG4 5AL up to Medium RG4 5AN up to Medium RG4 5AP up to Medium RG4 5AR up to Medium RG4 5AS up to Medium RG4 5AT up to Medium RG4 5AU up to Medium RG4 5AW up to Medium RG4 5AX up to Medium RG4 5AY up to Medium RG4 5AZ up to Medium RG4 5BA up to Medium RG4 5BB up to Medium RG4 5BE up to Medium RG4 5BF up to Medium RG4 5BH up to Medium RG4 5BJ up to Medium RG4 5BL up to Medium RG4 5BN up to Medium RG4 5BP up to Medium RG4 5BT up to Medium RG4 5BU up to Medium RG4 5BW up to Medium RG4 5BX up to Medium RG4 5BZ up to Medium RG4 5DB up to Medium RG4 5DE up to Medium RG4 5DQ up to Medium RG4 5LB up to Medium RG4 5LE up to Medium RG4 5LQ up to Medium RG4 5LY up to Medium RG4 6AE up to Medium RG4 6LE up to Medium RG4 6LF up to Medium RG4 6TS up to Medium RG4 7AD up to Medium RG4 8BD up to Medium RG4 8BG up to Medium RG4 8BH up to Medium RG4 8BJ up to Medium RG4 8BL up to Medium RG4 8BN up to Medium RG4 8DD up to Medium RG4 8DJ up to Medium RG4 8DS up to Medium RG4 8DT up to Medium RG4 8DW up to Medium RG4 8DX up to Medium RG4 8DY up to Medium RG4 8EA up to Medium RG4 8EB up to Medium RG4 8EP up to Medium RG4 5AF up to Low RG4 5DA up to Low RG4 5DD up to Low RG4 5DG up to Low RG4 5ED up to Low RG4 5JZ up to Low RG4 6LB up to Low RG4 6LL up to Low RG4 7AA up to Low RG4 7AE up to Low RG4 7SE up to Low RG4 7SS up to Low RG4 7SY up to Low RG4 7TN up to Low RG4 8AE up to Low RG4 8AR up to Low RG4 8AT up to Low RG4 8AU up to Low RG4 8AZ up to Low RG4 8BA up to Low RG4 8BB up to Low RG4 8BQ up to Low RG4 8BT up to Low RG4 8BX up to Low RG4 8BY up to Low RG4 8BZ up to Low RG4 8DA up to Low RG4 8DB up to Low RG4 8DZ up to Low RG4 8EQ up to Low RG4 8HH up to Low RG4 9QP up to Low RG4 9QR up to Low RG4 9QU up to Low

Rivers and flooding history near RG4

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

424 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (106 at warning level or above), most recently 28 February 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 RG4? 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

RG5 RG2 RG6 RG1 RG7 RG8 RG9 RG10

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.