Does Cirencester flood?

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

Ordnance Survey places 94 postcodes in Cirencester 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 1,503 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 Cirencester

Environment Agency gauges within 10 km of Cirencester watch River Churn, River Thames, Ampney Brook, Swill Brook.

• Cirencester Structure
  River Churn · 1.1 km away 0.11 m
  controlled by a sluice or weir · 35 min ago
• Ewen Structure
  River Thames · 4.9 km away -0.01 m
  controlled by a sluice or weir · 35 min ago
• South Cerney
  River Churn · 5.1 km away 0.37 m
  normal range · 35 min ago
• Ampney St Peter Structure
  Ampney Brook · 5.2 km away 0.10 m
  controlled by a sluice or weir · 35 min ago
• Somerford Keynes
  River Thames · 7.3 km away 0.44 m
  normal range · steady · 35 min ago
• Cerney Wick Structure
  River Churn · 7.5 km away 0.12 m
  controlled by a sluice or weir · 35 min ago
• Oaksey Structure
  Swill Brook · 9.7 km away -0.31 m
  controlled by a sluice or weir · 50 min ago

Distances are from the middle of Cirencester'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 Cirencester

10 Environment Agency flood warning areas lie within 10 km of Cirencester. The EA has issued 77 flood warnings and alerts for them since 2006, most recently on 17 Mar 2026.

• River Churn from Baunton to Siddington, including The Daglingworth Stream, and The Gumstool Brook, in Cirencester only
  3 warnings and alerts since 2006, latest Dec 2020 1.3 km
• River Churn from Coberley to Cerney Wick and also The Hilcot Brook, The Daglingworth Stream and The Gumstool Brook
  54 warnings and alerts since 2006, latest Mar 2026 3.4 km
• River Churn at South Cerney including School Lane, Bow Wow and Boxbush Road
  7 warnings and alerts since 2006, latest Jan 2023 4.8 km
• River Thames at Ewen
  no warning on record since 2006 5.2 km
• River Churn at Cerney Wick
  5 warnings and alerts since 2006, latest Jan 2023 6.8 km
• Ampney Brook from Barnsley Wood to Sheeppen Bridge near Latton including Ampney Crucis
  6 warnings and alerts since 2006, latest May 2018 7.0 km
• River Thames from Ewen to Cricklade including Somerford Keynes and Ashton Keynes
  1 warning or alert since 2006, latest Apr 2012 7.5 km
• Ampney Brook from Ampney Crucis to Sheeppen Bridge near Latton
  no warning on record since 2006 7.6 km
• River Thames from Somerford Keynes to Cricklade including Ashton Keynes
  no warning on record since 2006 8.0 km
• Swill Brook from below Oaksey to the confluence with the River Thames
  1 warning or alert since 2006, latest Nov 2024 8.6 km

Recorded floods near Cirencester

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Cirencester, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →

• 12 Jan 2008 — Cirencester CP_Fluvial Water Main river
• 12 Jan 2008 — Cirencester CP_Surface Water Drainage
• 19 Jul 2007 — Cirencester CP_Fluvial Water Main river
• 1 Jan 2000 — 06DecemberWinter2000 Main river
• 1 Jan 1993 — 06OctoberAutumn1993 Main river
• 1 Jan 1992 — 06SeptemberAutumn1992 Main river
• 1 Jan 1947 — 06MarchSpring1947 Main river

Rainfall near Cirencester

Cirencester gets about 829 mm of rain a year on average (wettest month November, 91 mm; driest April, 56 mm). That is 29% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 0.5 km from the place centre.

The nearest rain gauge, Rainfall station (4.9 km away), recorded 0.8 mm in the last 24 hours and 69.9 mm in the last 7 days (latest reading 36 min ago).

At-risk postcodes in Cirencester

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

High likelihood (7)

Medium likelihood (39)

Low likelihood (41)

Very low likelihood (7)

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.