Does EN9 flood?

Yes — parts of the EN9 district carry real flood risk: 36 of its 175 at-risk postcodes reach the Environment Agency's High likelihood band. The EN9 postcode district covers Roydon & Lower Nazeing, close to Waltham Abbey, Cheshunt, Waltham Cross, and surrounding villages in parts of England and Essex.

175 postcodes in the EN9 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 36 high, 29 medium, 66 low, 44 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).

Free preview first · full report £19

Which EN9 postcodes are at risk?

EN9 1DG up to High EN9 1FJ up to High EN9 1XE up to High EN9 2AD up to High EN9 2DH up to High EN9 2ED up to High EN9 2EU up to High EN9 2EX up to High EN9 2EY up to High EN9 2EZ up to High EN9 2HB up to High EN9 2HF up to High EN9 2HJ up to High EN9 2HU up to High EN9 2HX up to High EN9 2JE up to High EN9 2JF up to High EN9 2LD up to High EN9 2LG up to High EN9 2LQ up to High EN9 2PB up to High EN9 2RE up to High EN9 2RG up to High EN9 2RH up to High EN9 3AL up to High EN9 3DR up to High EN9 3HH up to High EN9 3LE up to High EN9 3QL up to High EN9 3SF up to High EN9 3TF up to High EN9 3TH up to High EN9 3XN up to High EN9 3YP up to High EN9 3YQ up to High EN9 3YX up to High EN9 1AA up to Medium EN9 1AB up to Medium EN9 1AE up to Medium EN9 1AF up to Medium EN9 1AJ up to Medium EN9 1AL up to Medium EN9 1AN up to Medium EN9 1AS up to Medium EN9 1AZ up to Medium EN9 1BJ up to Medium EN9 1BL up to Medium EN9 1BN up to Medium EN9 1DR up to Medium EN9 1FL up to Medium EN9 1JX up to Medium EN9 1JY up to Medium EN9 1LS up to Medium EN9 1LT up to Medium EN9 1QU up to Medium EN9 1RB up to Medium EN9 1RG up to Medium EN9 1RP up to Medium EN9 1RS up to Medium EN9 2BH up to Medium EN9 2LA up to Medium EN9 2LE up to Medium EN9 2NL up to Medium EN9 3AH up to Medium EN9 3AJ up to Medium EN9 1BA up to Low EN9 1BB up to Low EN9 1BD up to Low EN9 1BE up to Low EN9 1BF up to Low EN9 1BP up to Low EN9 1BQ up to Low EN9 1BS up to Low EN9 1BU up to Low EN9 1BY up to Low EN9 1FD up to Low EN9 1FN up to Low EN9 1HN up to Low EN9 1HP up to Low EN9 1HS up to Low EN9 1HW up to Low EN9 1HY up to Low EN9 1JB up to Low EN9 1JD up to Low EN9 1JE up to Low EN9 1JF up to Low EN9 1JG up to Low EN9 1JH up to Low EN9 1JJ up to Low EN9 1JP up to Low EN9 1JQ up to Low EN9 1JR up to Low EN9 1JS up to Low EN9 1JT up to Low EN9 1JU up to Low EN9 1JW up to Low EN9 1LF up to Low EN9 1LP up to Low EN9 1LR up to Low EN9 1LU up to Low EN9 1RE up to Low EN9 1RQ up to Low EN9 1RU up to Low EN9 1SE up to Low EN9 1SL up to Low EN9 1SQ up to Low EN9 1UR up to Low EN9 1XA up to Low EN9 2HW up to Low EN9 2HY up to Low EN9 2JA up to Low EN9 2JB up to Low EN9 2JD up to Low EN9 2RB up to Low EN9 2RJ up to Low EN9 2RQ up to Low EN9 3DD up to Low EN9 3DH up to Low EN9 3DJ up to Low EN9 3DS up to Low EN9 3DU up to Low EN9 3EL up to Low EN9 3ER up to Low EN9 3ES up to Low EN9 3EW up to Low EN9 3EX up to Low EN9 3JR up to Low EN9 3JY up to Low EN9 3LF up to Low EN9 3YF up to Low EN9 3YS up to Low EN9 1BH up to Very low EN9 1BX up to Very low EN9 1BZ up to Very low EN9 1DE up to Very low EN9 1DY up to Very low EN9 1DZ up to Very low EN9 1FE up to Very low EN9 1FG up to Very low EN9 1FH up to Very low EN9 1FS up to Very low EN9 1HA up to Very low EN9 1HB up to Very low EN9 1HD up to Very low EN9 1HE up to Very low EN9 1HG up to Very low EN9 1HH up to Very low EN9 1HJ up to Very low EN9 1HL up to Very low EN9 1HU up to Very low EN9 1HZ up to Very low EN9 1LL up to Very low EN9 1LN up to Very low EN9 1NJ up to Very low EN9 1NY up to Very low EN9 1PB up to Very low EN9 1QZ up to Very low EN9 1RD up to Very low EN9 1RF up to Very low EN9 1RH up to Very low EN9 1RL up to Very low EN9 1RT up to Very low EN9 1RW up to Very low EN9 1SD up to Very low EN9 1SH up to Very low EN9 1SN up to Very low EN9 1UT up to Very low EN9 1UU up to Very low EN9 2AG up to Very low EN9 2PA up to Very low EN9 3AN up to Very low EN9 3AP up to Very low EN9 3AS up to Very low EN9 3AW up to Very low EN9 3BT up to Very low

Rivers and flooding history near EN9

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

245 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (17 at warning level or above), most recently 27 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 EN9? 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

EN10 EN8 EN11 EN7 EN6 EN5 EN4 EN3

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.