Does Dagenham flood?

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

Ordnance Survey places 78 postcodes in Dagenham 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 1,883 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 Dagenham

Environment Agency gauges within 10 km of Dagenham watch River Beam, Loxford Water, River Rom, River Ingrebourne, Thames Tideway, River Cray, River Roding.

• Hornchurch_Bretons Farm
  River Beam · 2.9 km away 0.15 m
  normal range · 25 min ago
• Seven Kings Park
  Loxford Water · 5.8 km away No recent reading
  last reported 26 Oct 2026 10:00
• Romford
  River Rom · 6.2 km away 0.37 m
  normal range · 25 min ago
• Gaynes Park Structure
  River Ingrebourne · 6.3 km away 0.16 m
  controlled by a sluice or weir · 25 min ago
• Collier Row
  River Rom · 7.6 km away 0.39 m
  normal range · 25 min ago
• Silvertown Tidal
  Thames Tideway · 7.8 km away -1.19 mAOD
  rises and falls with the tide · 25 min ago
• Crayford
  River Cray · 8.8 km away 0.21 m
  normal range · steady · 25 min ago
• Hall Place
  River Cray · 9.2 km away 0.02 m
  normal range · steady · 25 min ago
• Redbridge
  River Roding · 9.4 km away No recent reading
  last reported 26 Oct 2026 10:00
• Charlton Tidal
  Thames Tideway · 9.9 km away -1.10 mAOD
  rises and falls with the tide · 25 min ago

Distances are from the middle of Dagenham'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 Dagenham

26 Environment Agency flood warning areas lie within 10 km of Dagenham. The EA has issued 165 flood warnings and alerts for them since 2006, most recently on 24 Oct 2026.

• The River Beam at Dagenham including Rainham
  no warning on record since 2006 0.9 km
• River Thames from The Mardyke to Barking Creek including Rainham Marshes, South Hornchurch, Ford Motor Works, Creekmouth, the New England Estate and South Barking
  no warning on record since 2006 2.1 km
• The Rivers Beam and Rom at Romford, Hornchurch, Dagenham and Rainham
  52 warnings and alerts since 2006, latest Oct 2026 2.5 km
• River Thames including areas in the boroughs of Havering, Barking and Dagenham, and Newham
  2 warnings and alerts since 2006, latest Feb 2008 3.0 km
• River Thames riverside from Dartford Creek and The Mardyke to the Thames Barrier
  27 warnings and alerts since 2006, latest Apr 2024 3.3 km
• The River Thames from Erith High Street to Woolwich Arsenal including Erith Marshes, Thamesmead, Abbey Wood, North Plumstead and the Woolwich Arsenal site.
  no warning on record since 2006 3.7 km
• The River Ingrebourne at Hornchurch including Upminster and Rainham
  5 warnings and alerts since 2006, latest Jan 2021 4.1 km
• River Thames including areas in the boroughs of Bexley and Greenwich
  2 warnings and alerts since 2006, latest Feb 2008 4.8 km
• The Lower River Roding including Redbridge, Woodford, Wanstead, Ilford, East Ham and Barking
  14 warnings and alerts since 2006, latest Jan 2021 4.8 km
• The Loxford Water at Seven Kings and Ilford
  no warning on record since 2006 5.2 km
• River Thames at Beckton Sewage Works including East Ham
  no warning on record since 2006 5.3 km
• The River Rom at Romford including Rush Green
  1 warning or alert since 2006, latest Jun 2016 5.3 km

Recorded floods near Dagenham

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

• 18 Nov 2022 — Loxford Water Flooding November 2022 Main river
• 29 Jan 2021 — ea06JanuaryWinter2021
• 20 Dec 2019 — ea06DecemberWinter2019 Main river
• 29 May 2018 — ea06MaySpring2018 Ordinary watercourse
• 23 Jun 2016 — ea06JuneSummer2016 Main river
• 31 Jan 2014 — ea06FebruaryWinter2014 Main river
• 14 Feb 2007 — 06FebruaryWinter2007 Main river
• 23 Dec 2002 — 06JanuaryNewYear2003 Main river
• 1 Jan 2000 — 06DecemberWinter2000 Main river
• 1 Jan 1974 — 06NovemberAutumn1974 Main river
• 1 Jan 1968 — 06SeptemberAutumn1968 Main river
• 31 Jan 1953 — 1953 Coast Flood Outline Essex Sea

…and 4 earlier recorded floods on the map.

Rainfall near Dagenham

Dagenham gets about 578 mm of rain a year on average (wettest month October, 63 mm; driest March, 34 mm). That is 50% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.0 km from the place centre.

At-risk postcodes in Dagenham

Every postcode Ordnance Survey places in Dagenham 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 (1)

Low likelihood (32)

Very low likelihood (41)

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.