Does GL8 flood?

Yes — parts of the GL8 district carry real flood risk: 16 of its 21 at-risk postcodes reach the Environment Agency's High likelihood band. The GL8 postcode district covers Grumbolds Ash with Avening, Tetbury East & Rural, Tetbury with Upton, close to Brokenborough, Easton Grey, Nailsworth, and surrounding villages in parts of Wiltshire and Gloucestershire.

21 postcodes in the GL8 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 16 high, 2 medium, 3 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

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Which GL8 postcodes are at risk?

GL8 8BX up to High GL8 8DL up to High GL8 8DY up to High GL8 8EF up to High GL8 8EY up to High GL8 8NF up to High GL8 8NG up to High GL8 8NL up to High GL8 8NR up to High GL8 8PB up to High GL8 8PD up to High GL8 8PN up to High GL8 8PP up to High GL8 8PX up to High GL8 8RP up to High GL8 8XA up to High GL8 8DZ up to Medium GL8 8QE up to Medium GL8 8NE up to Low GL8 8QG up to Low GL8 8QT up to Low

Rivers and flooding history near GL8

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

Brokenborough on the Tetbury Avon — 5.4 km away, highest on record 1.55m
Fosseway on the Sherston Avon — 6.8 km away, highest on record 1.27m
Egypt Mill on the Nailsworth Stream — 6.9 km away, highest on record 0.64m
Brimscombe on the River Frome (Severn) — 9.3 km away, highest on record 1.33m

48 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (48 at warning level or above), most recently 18 December 2025. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

EA112_Tetbury Avon NMR_ST99SW_L Newnton (1925) — about 4.2 km from the centre

🏠 Buying or renting in GL8? 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

GL7 GL9 GL10 GL6 GL11 GL5 GL12 GL4

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.