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Does NN15 flood?

Yes — parts of the NN15 district carry real flood risk: 8 of its 23 at-risk postcodes reach the Environment Agency's High likelihood band. The NN15 postcode district covers Ise, St Peter, Rothwell & Mawsley, close to Barton Seagrave, Great Harrowden, Newton, and surrounding villages in North Northamptonshire.

23 postcodes in the NN15 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 8 high, 3 medium, 12 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 NN15 postcodes are at risk?

NN15 5DJ up to High NN15 5PP up to High NN15 6GS up to High NN15 6JQ up to High NN15 6LF up to High NN15 6NJ up to High NN15 6NL up to High NN15 6WP up to High NN15 5BN up to Medium NN15 5PU up to Medium NN15 6XE up to Medium NN15 5NT up to Low NN15 6FD up to Low NN15 6GA up to Low NN15 6GB up to Low NN15 6GD up to Low NN15 6LX up to Low NN15 6PB up to Low NN15 6PE up to Low NN15 6XA up to Low NN15 6XR up to Low NN15 6XY up to Low NN15 7JU up to Low

Rivers and flooding history near NN15

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

141 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (14 at warning level or above), most recently 3 March 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 NN15? 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

NN14 NN16 NN13 NN17 NN12 NN18 NN11 NN10

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.