Does Crowthorne flood?

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

Ordnance Survey places 20 postcodes in Crowthorne 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 86 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 Crowthorne

Environment Agency gauges within 10 km of Crowthorne watch Emm Brook, River Blackwater, The Cut, Windle Brook, Cove Brook, River Loddon, River Hart.

• Wokingham
  Emm Brook · 3.6 km away 0.44 mASD
  normal range · steady · 31 min ago
• Blackwater Bridge
  River Blackwater · 5.6 km away 1.34 mASD
  normal range · just past its peak · 31 min ago
• Eversley
  River Blackwater · 6.3 km away 0.55 mASD
  below normal · steady · 31 min ago
• Binfield
  The Cut · 6.5 km away 0.14 mASD
  normal range · steady · 31 min ago
• Warfield
  The Cut · 7.5 km away 1.85 mASD
  normal range · rising · 31 min ago
• Bagshot
  Windle Brook · 8.1 km away 0.64 mASD
  normal range · rising · 1 h ago
• Mayfield Road Structure
  Cove Brook · 8.3 km away 0.89 mASD
  controlled by a sluice or weir · 31 min ago
• Sindlesham Mill Structure
  River Loddon · 8.5 km away 0.09 mASD
  controlled by a sluice or weir · 31 min ago
• Arborfield Bridge
  River Loddon · 9.4 km away 0.15 mASD
  below normal · rising · 31 min ago
• Bramshill Structure
  River Hart · 9.7 km away 0.27 mASD
  controlled by a sluice or weir · 31 min ago
• Cove Hazel Avenue
  Cove Brook · 9.9 km away No recent reading
  last reported 11 Sep 2026 10:00

Distances are from the middle of Crowthorne'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 Crowthorne

16 Environment Agency flood warning areas lie within 10 km of Crowthorne. The EA has issued 313 flood warnings and alerts for them since 2006, most recently on 15 Feb 2026.

• Queen's Brook at Ashdale Park, The Brambles, Pine Ridge Park and Holme Green. 1.2 km
• Emm Brook and Queen's Brook including Wokingham and parts of Crowthorne and Finchampstead
  68 warnings and alerts since 2006, latest Feb 2026 3.6 km
• River Blackwater at Camberley and Sandhurst including Frimley Business Park, Shepherd Meadows Nature Reserve and Trilakes Country Park, Surrey and Berkshire 3.7 km
• River Blackwater including Badshot Lea, Aldershot, Farnborough, Camberley, Sandhurst, Eversley, Bramshill and Swallowfield, and the Cove Brook at Farnborough and Cove
  101 warnings and alerts since 2006, latest Jan 2026 4.3 km
• Emm Brook at Wokingham including Hurst, Berkshire
  2 warnings and alerts since 2006, latest Mar 2023 5.0 km
• River Blackwater at Eversley and Bramshill, Hampshire and Berkshire 6.5 km
• Cut from Three Legged Cross to Binfield Manor including Jocks Lane Park, Berkshire 6.7 km
• Cove Brook at Farnborough including Hawley Bridge, Hampshire 7.9 km
• Cut including Brockhill, Warfield, Bracknell, Paley Street and Holyport
  48 warnings and alerts since 2006, latest Feb 2025 8.2 km
• River Loddon at Lower Earley and Sindlesham including Earley, Berkshire
  4 warnings and alerts since 2006, latest Feb 2020 8.7 km
• Windle Brook at Bagshot including Swift Lane Caravan Park, Surrey 8.8 km
• Cove Brook at West Farnborough including West Heath and Rafborough 9.3 km

Recorded floods near Crowthorne

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Crowthorne, 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 Main river
• 20 Jul 2007 — Thames SE area July 2007 Main river
• 1 Jan 1990 — 06FebruaryWinter1990 Main river
• 1 Jan 1981 — 06DecemberWinter1981 Main river
• 1 Jan 1974 — 06NovemberAutumn1974 Main river
• 1 Jan 1968 — 06SeptemberAutumn1968 Main river
• 1 Jan 1947 — 06MarchSpring1947 Main river

Rainfall near Crowthorne

The nearest rain gauge, Rainfall station (6.0 km away), recorded 2.2 mm in the last 24 hours and 18.5 mm in the last 7 days (latest reading 46 min ago).

At-risk postcodes in Crowthorne

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

High likelihood (10)

Medium likelihood (7)

Low likelihood (3)

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.