Does TN20 flood?

Yes — parts of the TN20 district carry real flood risk: 6 of its 12 at-risk postcodes reach the Environment Agency's High likelihood band. The TN20 postcode district covers Mayfield & Five Ashes, Hadlow Down & Rotherfield, close to Buxted, Burwash, Wadhurst, and surrounding villages in parts of East Sussex and Kent.

12 postcodes in the TN20 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 6 high, 1 medium, 5 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 TN20 postcodes are at risk?

TN20 6EH up to High TN20 6LL up to High TN20 6RF up to High TN20 6RH up to High TN20 6RP up to High TN20 6RR up to High TN20 6RE up to Medium TN20 6EG up to Low TN20 6JR up to Low TN20 6NF up to Low TN20 6RJ up to Low TN20 6RQ up to Low

Rivers and flooding history near TN20

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

Buxted on the River Uck — 9.5 km away, highest on record 3.00m
Burwash on the River Rother — 9.5 km away, highest on record 2.49m
Bartley Mill on the River Teise — 10.7 km away, highest on record 2.32m
Cowbeech on the River Cuckmere — 11.3 km away, highest on record 1.84m

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

07317D200_DEC1985_Rother_Crowhurst Bridge to Scots (1985) — about 5.6 km from the centre

🏠 Buying or renting in TN20? 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

TN19 TN21 TN18 TN22 TN17 TN23 TN16 TN24

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.