Does Thrapston flood?

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

Ordnance Survey places 20 postcodes in Thrapston 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 161 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 Thrapston

Environment Agency gauges within 10 km of Thrapston watch River Nene, Harpers Brook.

• Islip Sluice Structure
  River Nene · 0.6 km away 0.75 m
  controlled by a sluice or weir · 31 min ago
• Old Mill Bridge, Lowick
  Harpers Brook · 1.7 km away 0.16 m
  normal range · steady · 46 min ago
• Lilford
  River Nene · 5.9 km away 0.43 m
  normal range · 31 min ago
• Brigstock
  Harpers Brook · 8.4 km away 0.07 m
  normal range · 31 min ago

Distances are from the middle of Thrapston'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 Thrapston

7 Environment Agency flood warning areas lie within 10 km of Thrapston. The EA has issued 125 flood warnings and alerts for them since 2006, most recently on 3 Mar 2026.

• Thrapston including Nine Arches Way, Poreham Road, Chainbridge Court, Blackbridge Court, the Willows, Sedge Close and Osier Way
  no warning on record since 2006 0.2 km
• River Nene between Cogenhoe and Wansford
  80 warnings and alerts since 2006, latest Mar 2026 7.8 km
• Wellingborough to Thrapston including Station Road and isolated properties in Ringstead and Denford
  15 warnings and alerts since 2006, latest Feb 2026 8.1 km
• Properties near to the Barnwell Brook in Barnwell
  1 warning or alert since 2006, latest Dec 2020 8.1 km
• Brigstock and Sudborough including Braybrooks, Bridge Street, Sudborough Road and Main Street
  8 warnings and alerts since 2006, latest Nov 2024 8.4 km
• Ellington Brook at Spaldwick, Ellington and Brampton
  14 warnings and alerts since 2006, latest Feb 2026 9.0 km
• Areas near to the River Nene from Thorpe Waterville to Eaglethorpe including Thorpe Waterville, Wadenhoe, Oundle, Cotterstock and Tansor
  7 warnings and alerts since 2006, latest Nov 2024 9.6 km

Recorded floods near Thrapston

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Thrapston, 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 Dec 2020 — LNA_2020_December_Harpers Brook_Sudborough Main river
• 9 Apr 1998 — LNA_1998_April_Harpers Brook Main river
• 9 Apr 1998 — LNA_1998_April_River Nene_d/s Northampton Main river
• 16 Mar 1947 — LNA_1947_March_Harpers Brook_d/s Sudborough Main river
• 16 Mar 1947 — LNA_1947_March_River Nene_d/s Northampton Main river

Rainfall near Thrapston

Thrapston gets about 648 mm of rain a year on average (wettest month October, 73 mm; driest March, 40 mm). That is 44% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.3 km from the place centre.

The nearest rain gauge, Rainfall station (7.6 km away), recorded 4.0 mm in the last 24 hours and 40.0 mm in the last 7 days (latest reading 31 min ago).

At-risk postcodes in Thrapston

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

High likelihood (4)

Medium likelihood (5)

Low likelihood (7)

Very low likelihood (4)

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.