FloodRadar
Log inCreate free account

Explore FloodRadar

Explore the map
Weather
Why ?

Does NN1 flood?

Yes — parts of the NN1 district carry real flood risk: 6 of its 44 at-risk postcodes reach the Environment Agency's High likelihood band. The NN1 postcode district covers Castle, Kingsley & Semilong, Far Cotton, Delapre & Briar Hill, Weston Favell & Abington Vale, close to Northampton, Great Houghton, Duston, and surrounding villages in West Northamptonshire.

44 postcodes in the NN1 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 6 high, 2 medium, 24 low, 12 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 NN1 postcodes are at risk?

NN1 1HF up to High NN1 2PQ up to High NN1 5FY up to High NN1 5NH up to High NN1 5NL up to High NN1 5NN up to High NN1 5GB up to Medium NN1 5NX up to Medium NN1 1EE up to Low NN1 1EJ up to Low NN1 1EL up to Low NN1 1EP up to Low NN1 1ET up to Low NN1 1EX up to Low NN1 1EY up to Low NN1 1FF up to Low NN1 1HB up to Low NN1 1HH up to Low NN1 1HL up to Low NN1 1HW up to Low NN1 1PD up to Low NN1 1PF up to Low NN1 1PJ up to Low NN1 1PY up to Low NN1 1PZ up to Low NN1 1QF up to Low NN1 2PB up to Low NN1 2PD up to Low NN1 5PA up to Low NN1 5PH up to Low NN1 5RN up to Low NN1 8AA up to Low NN1 1BQ up to Very low NN1 1ES up to Very low NN1 1HJ up to Very low NN1 1PN up to Very low NN1 1PR up to Very low NN1 5GE up to Very low NN1 5NG up to Very low NN1 5NS up to Very low NN1 5NT up to Very low NN1 5NZ up to Very low NN1 5RY up to Very low NN1 5SZ up to Very low

Rivers and flooding history near NN1

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

137 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (86 at warning level or above), most recently 7 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 NN1? 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

NN2 NN3 NN4 NN5 NN6 NN7 NN8 NN9

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.