Does Thatcham flood?

What the Environment Agency's rivers-and-sea flood-risk data says about Thatcham

Ordnance Survey places 73 postcodes in Thatcham in the Environment Agency's rivers-and-sea flood-risk dataset (Risk of Flooding from Rivers and Sea). Each postcode is counted once, under the worst band any of its properties reaches; together they hold 534 properties in the EA dataset's likelihood bands.

This dataset covers flooding from rivers and the sea only — one of five flood sources. Surface water, groundwater, sewers and reservoirs are assessed separately, so a postcode missing from it is not proof that a place cannot flood. The band describes the land around properties (allowing for defences), not any single address and not today's conditions.

Rivers and live river levels near Thatcham

Environment Agency gauges within 10 km of Thatcham watch River Kennet, River Lambourn, River Pang, River Enborne, Winterbourne Stream, Kingsclere Brook.

• Newbury
  River Kennet · 4.7 km away 1.03 m
  normal range · 24 min ago
• Shaw
  River Lambourn · 4.7 km away 1.37 m
  normal range · steady · 24 min ago
• Bucklebury Structure
  River Pang · 5.4 km away 0.17 m
  controlled by a sluice or weir · 24 min ago
• Brimpton Structure
  River Enborne · 5.4 km away 0.16 m
  controlled by a sluice or weir · 24 min ago
• Frilsham Structure
  River Pang · 6.2 km away 0.06 m
  controlled by a sluice or weir · 24 min ago
• Bagnor
  Winterbourne Stream · 7.0 km away 0.05 m
  normal range · steady · 24 min ago
• Kingsclere Structure
  Kingsclere Brook · 8.3 km away 0.08 m
  controlled by a sluice or weir · 24 min ago

Distances are from the middle of Thatcham's at-risk postcodes. Tidal and structure gauges are shown as readings only — the tide and sluice gates move them, not floods. A gauge with no recent reading shows no level.

Flood warning areas near Thatcham

8 Environment Agency flood warning areas lie within 10 km of Thatcham. The EA has issued 79 flood warnings and alerts for them since 2006, most recently on 6 Apr 2026.

• River Enborne from Gore End down to Aldermaston including the Ecchinswell Brook and Kingsclere Brook
  1 warning or alert since 2006, latest Dec 2013 4.1 km
• River Kennet at Newbury including the confluence with the River Lambourn south of the A4
  1 warning or alert since 2006, latest Jan 2024 4.3 km
• River Lambourn from Donnington to the Shaw area north of the A4 in Newbury
  7 warnings and alerts since 2006, latest Mar 2024 4.7 km
• River Pang at Bucklebury
  5 warnings and alerts since 2006, latest Feb 2024 5.3 km
• River Kennet for Thatcham and Colthrop
  no warning on record since 2006 5.9 km
• River Lambourn from Lambourn to the Shaw area in Newbury including Eastbury, East Garston, Welford, Easton, Boxford, Woodspeen, Bagnor, Donnington, Great Shefford on the Great Shefford Stream and Winterbourne on the Winterbourne Stream
  63 warnings and alerts since 2006, latest Apr 2026 6.5 km
• River Lambourn from Weston to Bagnor including Easton, Boxford, Woodspeen and Winterbourne on the Winterbourne Stream
  no warning on record since 2006 8.3 km
• River Pang for Frilsham, Stanford Dingley and Bradfield
  2 warnings and alerts since 2006, latest Jan 2023 9.4 km

Recorded floods near Thatcham

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Thatcham, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →

• 23 Nov 2013 — Winter 2013/2014 Main river
• 9 Feb 2009 — Brimpton_Fluvial Main river
• 9 Feb 2009 — Bucklebury_Fluvial Main river
• 19 Jul 2007 — Bucklebury_Fluvial Water Main river
• 19 Jul 2007 — Newbury CP_Surface Water Drainage
• 19 Jul 2007 — Thatcham CP_Fluvial Water Main river
• 19 Jul 2007 — Newbury CP_Fluvial Water Main river
• 23 Dec 2002 — 06JanuaryNewYear2003 Other
• 1 Jan 1993 — 06OctoberAutumn1993 Main river
• 1 Jan 1992 — 06SeptemberAutumn1992 Main river
• 1 Jan 1979 — 06MarchWinter1979 Main river
• 1 Jan 1971 — 06JuneSummer1971 Main river

Rainfall near Thatcham

Thatcham gets about 727 mm of rain a year on average (wettest month November, 84 mm; driest March, 48 mm). That is 37% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 0.8 km from the place centre.

The nearest rain gauge, Rainfall station (6.3 km away), recorded 4.0 mm in the last 24 hours and 64.5 mm in the last 7 days (latest reading 24 min ago).

At-risk postcodes in Thatcham

Every postcode Ordnance Survey places in Thatcham that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.

High likelihood (21)

Medium likelihood (11)

Low likelihood (41)

Postcode districts

Sources

FloodRadar summarises public flood data. It is not a flood-risk survey of any property, and it does not replace official GOV.UK flood warnings or the GOV.UK long-term flood risk service.