Recorded floods map

31,672 Environment Agency recorded flood outlines since 1703 — the actual mapped extent of past floods, not predictions. Zoom in to see the outlines; click one for details.

From To River Coastal Tidal Community flood history Log a flood Loading…

2010 – today 1980 – 2009 Before 1980 Dot = a flood too small to see at this zoom — click it, or zoom in for the shape Public outlines (dashed = unverified); count badges = wider-area summaries, all dates Dashed, unfilled = region-wide EA incident record or approximate boundary — only patches inside it flooded

A recorded outline means water was mapped there during a past flood. The absence of an outline does not mean a place has never flooded — only that no record exists. Surface-water-only floods are mostly excluded. Decade counts partly reflect recording effort — mapping improved hugely after 2000 — so year-on-year comparisons say as much about record-keeping as weather. Check your own location with the postcode flood briefing or see the flood help guide. Contains Environment Agency data © Crown copyright and database right.

Largest recorded flood extents

1953 Coast Flood Outline Essex 1953-01-31 · Essex 230 km²

Tidal Trent March 1947 1947-03-01 · Nottinghamshire 205 km²

Tidal Trent March 1947 DNL 1947-03-01 · Nottinghamshire 174 km²

Tidal Trent 1947 1947-03-01 · Nottinghamshire 161 km²

1953 Coast Flood Outline Norfolk 1953-01-31 · Norfolk 137 km²

LNA_1953_01_Lincolnshire Coastline 1953-01-31 · Lincolnshire 127 km²

Fluvial Trent March 1947 1947-03-01 · Nottinghamshire 125 km²

March-1947 River Severn 1947-03-07 · Gloucestershire 87 km²

LNA_1795_Feb_River Trent in Witham 1795-02-01 · Lincolnshire 84 km²

1953 Coast Flood Outline Suffolk 1953-01-31 · Suffolk 81 km²

LNA_1947_March_River Welland_Crowland 1947-03-16 · Lincolnshire 80 km²

06MarchSpring1947 1947-01-01 · Wokingham 74 km²

Mapped extent of the recorded outline; large events span several outlines and counties (county = outline centroid). A few EA records are banked without a mapped shape — they are on the map as a dashed boundary but cannot be ranked here, because their only measurable area is the box drawn around them.

Most recorded floods by county

Oxfordshire most recent: 2020-12-24 5,141

Hampshire most recent: 2014-03-05 2,269

Gloucestershire most recent: 2012-11-25 1,759

Surrey most recent: 2024-01-09 1,344

Buckinghamshire most recent: 2024-03-02 1,282

Devon most recent: 2025-08-28 1,223

North Yorkshire most recent: 2023-01-01 1,156

Cornwall most recent: 2025-09-09 1,116

Lancashire most recent: 2024-12-31 1,107

Wiltshire most recent: 2015-12-15 1,060

Somerset most recent: 2023-11-01 695

Lincolnshire most recent: 2025-01-05 693

Outline counts, not severity — multiple surveys can map one flood. County assigned from the outline centroid.