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Does NG31 flood?

Yes — parts of the NG31 district carry real flood risk: 40 of its 126 at-risk postcodes reach the Environment Agency's High likelihood band. The NG31 postcode district covers Grantham St Wulfram's, Grantham St Vincent's, Grantham Barrowby Gate, Grantham Earlesfield, close to Little Ponton, Allington, Woolsthorpe by Belvoir, and surrounding villages in parts of Lincolnshire and Leicestershire.

126 postcodes in the NG31 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 40 high, 12 medium, 73 low, 1 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 NG31 postcodes are at risk?

NG31 6HQ up to High NG31 6JL up to High NG31 6JZ up to High NG31 6NS up to High NG31 6NZ up to High NG31 6PB up to High NG31 6PR up to High NG31 6PS up to High NG31 6PX up to High NG31 6RJ up to High NG31 6RL up to High NG31 6RP up to High NG31 6RR up to High NG31 6RX up to High NG31 6SU up to High NG31 6SW up to High NG31 6TE up to High NG31 7ES up to High NG31 7JY up to High NG31 7SW up to High NG31 8BT up to High NG31 8BU up to High NG31 8BX up to High NG31 8BY up to High NG31 8BZ up to High NG31 8DA up to High NG31 8EL up to High NG31 8HX up to High NG31 8HY up to High NG31 8NH up to High NG31 8NQ up to High NG31 9FA up to High NG31 9FB up to High NG31 9FD up to High NG31 9FG up to High NG31 9FN up to High NG31 9HJ up to High NG31 9JL up to High NG31 9ST up to High NG31 9SW up to High NG31 6LA up to Medium NG31 7AQ up to Medium NG31 7EG up to Medium NG31 7JX up to Medium NG31 8DN up to Medium NG31 8EJ up to Medium NG31 8EW up to Medium NG31 8FJ up to Medium NG31 8NG up to Medium NG31 8RA up to Medium NG31 9BF up to Medium NG31 9SJ up to Medium NG31 6AD up to Low NG31 6EU up to Low NG31 6EZ up to Low NG31 6FA up to Low NG31 6HA up to Low NG31 6HB up to Low NG31 6HE up to Low NG31 6HF up to Low NG31 6HG up to Low NG31 6HH up to Low NG31 6HJ up to Low NG31 6HL up to Low NG31 6HN up to Low NG31 6HS up to Low NG31 6HZ up to Low NG31 6JH up to Low NG31 6JJ up to Low NG31 6JN up to Low NG31 6JS up to Low NG31 6JX up to Low NG31 6LR up to Low NG31 6LX up to Low NG31 6LY up to Low NG31 6NU up to Low NG31 6PG up to Low NG31 6QP up to Low NG31 6QQ up to Low NG31 6QS up to Low NG31 6QT up to Low NG31 6QU up to Low NG31 6QW up to Low NG31 6SS up to Low NG31 6TA up to Low NG31 6TH up to Low NG31 6TN up to Low NG31 6TT up to Low NG31 7AA up to Low NG31 7AB up to Low NG31 7AD up to Low NG31 7AE up to Low NG31 7AJ up to Low NG31 7AL up to Low NG31 7AP up to Low NG31 7AW up to Low NG31 7DA up to Low NG31 7DB up to Low NG31 7DD up to Low NG31 7EF up to Low NG31 7EH up to Low NG31 7EJ up to Low NG31 7EN up to Low NG31 7EP up to Low NG31 7EQ up to Low NG31 7GA up to Low NG31 7GB up to Low NG31 7GE up to Low NG31 7GR up to Low NG31 7JT up to Low NG31 7NP up to Low NG31 7UL up to Low NG31 8BW up to Low NG31 8ER up to Low NG31 8ES up to Low NG31 8GT up to Low NG31 8HU up to Low NG31 8RN up to Low NG31 9AA up to Low NG31 9AD up to Low NG31 9BB up to Low NG31 9BZ up to Low NG31 9DZ up to Low NG31 9EA up to Low NG31 9HL up to Low NG31 7NT up to Very low

Rivers and flooding history near NG31

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

146 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (19 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):

🏠 Buying or renting in NG31? 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

NG32 NG33 NG34 NG25 NG24 NG23 NG22 NG21

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.