Does Wallingford flood?

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

Ordnance Survey places 30 postcodes in Wallingford 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 207 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 Wallingford

Environment Agency gauges within 10 km of Wallingford watch River Thames, Ewelme Brook, River Thame, Mill Brook, Chalgrove Brook.

• Benson Lock Structure
  River Thames · 2.5 km away 0.01 mASD
  controlled by a sluice or weir · 39 min ago
• Ewelme
  Ewelme Brook · 4.5 km away 0.07 mASD
  normal range · steady · 39 min ago
• Dorchester
  River Thame · 5.7 km away 0.27 mASD
  normal range · steady · 39 min ago
• Days Lock Structure
  River Thames · 6.0 km away 0.15 mASD
  controlled by a sluice or weir · 39 min ago
• Cleeve Lock Structure
  River Thames · 7.3 km away 0.00 mASD
  controlled by a sluice or weir · 39 min ago
• Blewbury Structure
  Mill Brook · 7.8 km away 0.12 mASD
  controlled by a sluice or weir · 39 min ago
• Goring Lock Structure
  River Thames · 8.1 km away 0.00 mASD
  controlled by a sluice or weir · 39 min ago
• Clifton Lock Structure
  River Thames · 8.3 km away 0.09 mASD
  controlled by a sluice or weir · 39 min ago
• Chalgrove Structure
  Chalgrove Brook · 8.3 km away 1.05 mASD
  controlled by a sluice or weir · 39 min ago
• Stadhampton
  River Thame · 8.9 km away 0.72 mASD
  normal range · steady · 39 min ago

Distances are from the middle of Wallingford'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 Wallingford

9 Environment Agency flood warning areas lie within 10 km of Wallingford. The EA has issued 87 flood warnings and alerts for them since 2006, most recently on 25 Feb 2026.

• River Thames and its tributaries from Days Lock to above Pangbourne, including Dorchester and Overy, Shillingford, Benson, Ewelme, Wallingford, Winterbrook, East Hagbourne, South Moreton, North Stoke, Moulsford, South Stoke, Goring and Streatley
  41 warnings and alerts since 2006, latest Feb 2026 0.9 km
• River Thames from Days Lock down to South Stoke, including Dorchester-on-Thames and Overy, Shillingford, Benson, Wallingford, North Stoke and Moulsford
  8 warnings and alerts since 2006, latest Nov 2024 1.4 km
• Mill Brook from the Hagbourne Mill area to Winterbrook including South Moreton
  1 warning or alert since 2006, latest Sep 2024 3.9 km
• Ewelme Stream at Ewelme and Benson 3.9 km
• River Thame in the Dorchester and Overy areas
  12 warnings and alerts since 2006, latest Nov 2024 6.1 km
• River Thame from Chiselhampton to Drayton St Leonard including Newington
  7 warnings and alerts since 2006, latest Sep 2024 7.9 km
• River Thames at Clifton Hampden, Dorchester and Little Wittenham
  6 warnings and alerts since 2006, latest Nov 2024 8.2 km
• River Thames from Cleeve Lock to Child Beale Park, above Pangbourne, including Goring and Streatley
  6 warnings and alerts since 2006, latest Jan 2024 8.6 km
• Chalgrove Brook at Chalgrove and Stadhampton
  6 warnings and alerts since 2006, latest Sep 2024 8.8 km

Recorded floods near Wallingford

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Wallingford, most recent first. Absence of a record does not mean a place has never flooded. See them on the map →

• 23 Nov 2013 — Winter 2013/2014 Other
• 12 Jan 2008 — Crowmarsh CP_Fluvial Main river
• 12 Jan 2008 — Dorchester CP_Fluvial Water Main river
• 12 Jan 2008 — Wallingford CP_Fluvial Main river
• 19 Jul 2007 — Clifton Hampden CP_Fluvial Water Main river
• 19 Jul 2007 — Wallingford CP_Fluvial Water Main river
• 19 Jul 2007 — Crowmarsh CP_Fluvial Water Main river
• 19 Jul 2007 — Dorchester CP_Fluvial Water Main river
• 19 Jul 2007 — Cholsey CP_Fluvial Water Main river
• 19 Jul 2007 — South Moreton CP_Fluvial Water Main river
• 19 Jul 2007 — Brightwell-cum-Sotwell CP_Fluvial Water Main river
• 19 Jul 2007 — North Moreton CP_Fluvial Water Main river

…and 8 earlier recorded floods on the map.

Rainfall near Wallingford

The nearest rain gauge, Rainfall station (2.6 km away), recorded 0.9 mm in the last 24 hours and 11.5 mm in the last 7 days (latest reading 39 min ago).

At-risk postcodes in Wallingford

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

High likelihood (9)

Medium likelihood (4)

Low likelihood (17)

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.