Does SG13 flood?

Yes — parts of the SG13 district carry real flood risk: 39 of its 64 at-risk postcodes reach the Environment Agency's High likelihood band. The SG13 postcode district covers Northaw and Cuffley, close to Hertford, Ware, Birch Green, and surrounding villages in parts of Hertfordshire and Essex.

64 postcodes in the SG13 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 39 high, 10 medium, 15 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 SG13 postcodes are at risk?

SG13 7AB up to High SG13 7AE up to High SG13 7AH up to High SG13 7AT up to High SG13 7BA up to High SG13 7BE up to High SG13 7BF up to High SG13 7BP up to High SG13 7BW up to High SG13 7DD up to High SG13 7DE up to High SG13 7DN up to High SG13 7DR up to High SG13 7DS up to High SG13 7DY up to High SG13 7EB up to High SG13 7EE up to High SG13 7EH up to High SG13 7FY up to High SG13 7GD up to High SG13 7HE up to High SG13 7HF up to High SG13 7HH up to High SG13 7HJ up to High SG13 7HS up to High SG13 7JU up to High SG13 7LA up to High SG13 7RQ up to High SG13 8AF up to High SG13 8BY up to High SG13 8ES up to High SG13 8EY up to High SG13 8EZ up to High SG13 8HJ up to High SG13 8HU up to High SG13 8HY up to High SG13 8LE up to High SG13 8QR up to High SG13 8XX up to High SG13 7AL up to Medium SG13 7AN up to Medium SG13 7AQ up to Medium SG13 7AX up to Medium SG13 7AY up to Medium SG13 7BH up to Medium SG13 7BJ up to Medium SG13 7DW up to Medium SG13 7DZ up to Medium SG13 7FZ up to Medium SG13 7AG up to Low SG13 7AP up to Low SG13 7AW up to Low SG13 7BB up to Low SG13 7BN up to Low SG13 7BY up to Low SG13 7DG up to Low SG13 7EG up to Low SG13 7HL up to Low SG13 7JG up to Low SG13 7JH up to Low SG13 7JQ up to Low SG13 7UB up to Low SG13 8DS up to Low SG13 8DT up to Low

Rivers and flooding history near SG13

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

50 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (11 at warning level or above), most recently 15 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 SG13? 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

SG12 SG14 SG11 SG15 SG10 SG16 SG17 SG9

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.