Does Frimley flood?

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

Ordnance Survey places 32 postcodes in Frimley 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 561 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 Frimley

Environment Agency gauges within 10 km of Frimley watch River Blackwater, Cove Brook, Windle Brook, Fleet Brook.

• Farnborough
  River Blackwater · 1.8 km away 0.64 mASD
  normal range · steady · 24 min ago
• Mayfield Road Structure
  Cove Brook · 2.3 km away 0.90 mASD
  controlled by a sluice or weir · 24 min ago
• Blackwater Bridge
  River Blackwater · 3.1 km away 1.33 mASD
  normal range · steady · 24 min ago
• Cove Hazel Avenue
  Cove Brook · 3.3 km away No recent reading
  last reported 10 Sep 2026 14:00
• Bagshot
  Windle Brook · 6.5 km away 0.65 mASD
  normal range · steady · 54 min ago
• Kings Road Bridge
  Fleet Brook · 7.2 km away 68.91 mAOD
  normal range · steady · 2 h ago
• Tongham Tidal
  River Blackwater · 8.4 km away 0.66 mASD
  rises and falls with the tide · 24 min ago

Distances are from the middle of Frimley'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 Frimley

12 Environment Agency flood warning areas lie within 10 km of Frimley. The EA has issued 124 flood warnings and alerts for them since 2006, most recently on 21 Jan 2026.

• Cove Brook at Farnborough including Hawley Bridge, Hampshire 1.8 km
• Cove Brook at West Farnborough including West Heath and Rafborough 2.9 km
• River Blackwater at Aldershot and Farnborough including Lakeside Park, Ash Vale, Farnborough Park and Mytchett, Hampshire and Surrey 4.6 km
• Properties at Mill Lane, Rapleys Field and Law Meadows 6.9 km
• Windle Brook at Bagshot including Swift Lane Caravan Park, Surrey 6.9 km
• Properties near the Fleet Brook along Reading Road, Aldershot Road and north of Fleet Pond, and also properties near the Pinegrove Stream in the Pondtail area 7.1 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 7.1 km
• River Blackwater at Camberley and Sandhurst including Frimley Business Park, Shepherd Meadows Nature Reserve and Trilakes Country Park, Surrey and Berkshire 7.3 km
• Hale Bourne from the M3 junction 3 to Clappers Lane including Windlesham Arboretum, Halebourne Lane and Burnt Pollard Lane, Surrey 8.1 km
• River Blackwater at Badshot Lea 9.0 km
• Queen's Brook at Ashdale Park, The Brambles, Pine Ridge Park and Holme Green. 9.2 km
• River Whitewater including North Warnborough, Hook and Riseley and the River Hart including Crondall, Crookham Village, Hartley Wintney, Riseley and Fleet
  23 warnings and alerts since 2006, latest Jan 2025 10.0 km

Recorded floods near Frimley

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

• 1 Jan 1990 — 06FebruaryWinter1990 Main river
• 1 Jan 1968 — 06SeptemberAutumn1968 Main river
• 1 Jan 1947 — 06MarchSpring1947 Main river

Rainfall near Frimley

The nearest rain gauge, Rainfall station (2.4 km away), recorded 0.0 mm in the last 24 hours and 17.5 mm in the last 7 days (latest reading 24 min ago).

At-risk postcodes in Frimley

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

High likelihood (20)

Medium likelihood (2)

Low likelihood (10)

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.