Does Warminster flood?

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

Ordnance Survey places 71 postcodes in Warminster 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 573 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 Warminster

Environment Agency gauges within 10 km of Warminster watch River Wylye, Somerset Frome.

• Heytesbury
  River Wylye · 4.5 km away 0.62 m
  below normal · falling · 34 min ago
• Brixton Deverill
  River Wylye · 6.9 km away 0.18 mASD
  normal range · steady · 34 min ago
• Frome Rodden
  Somerset Frome · 9.2 km away 0.33 mASD
  normal range · steady · 49 min ago

Distances are from the middle of Warminster'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 Warminster

4 Environment Agency flood warning areas lie within 10 km of Warminster. The EA has issued 57 flood warnings and alerts for them since 2006, most recently on 12 Mar 2026.

• Groundwater flooding for Warminster
  7 warnings and alerts since 2006, latest Mar 2026 0.4 km
• Longbridge Deverills, Henfords Marsh, Boreham, Water Lane and Norton Bavant
  12 warnings and alerts since 2006, latest Feb 2025 6.2 km
• Hawkeridge, Dursley, Yarnbrook, Biss Meadows Country Park and downstream of Trowbridge at Trowle Bridge and Bradford Road
  5 warnings and alerts since 2006, latest Jan 2025 8.9 km
• River Biss and tributaries between Westbury and Trowbridge
  33 warnings and alerts since 2006, latest Jan 2025 9.6 km

Recorded floods near Warminster

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

• 4 Jan 2014 — This represents flooding in the area in 2014
• 12 Mar 1996 — This represents flooding in the area in 1996 Other
• 1 Mar 1979 — This represents flooding in the area in 1979 Ordinary watercourse
• 6 Mar 1978 — This represents flooding in the area in 1978 Drainage
• 5 Dec 1960 — This represents flooding in the area in 1960 Ordinary watercourse
• 12 May 1959 — This represents flooding in the area in 1959 Ordinary watercourse

Rainfall near Warminster

The nearest rain gauge, Rainfall station (4.4 km away), recorded 0.0 mm in the last 24 hours and 11.2 mm in the last 7 days (latest reading 34 min ago).

At-risk postcodes in Warminster

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

High likelihood (17)

Medium likelihood (16)

Low likelihood (30)

Very low likelihood (8)

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.