Is Greater London at risk of flooding?

Greater London has 140 designated flood areas monitored by the Environment Agency, giving it a Very High risk rating. It ranks #9 out of 152 English counties for flood risk.

How many flood warning areas are in Greater London?

There are 140 flood warning and alert areas in Greater London, monitored by 0 Environment Agency stations across 38 rivers.

Which rivers flood in Greater London?

The main rivers in Greater London include Beam, Beck, Beverley Brook, Beverley Brook, Pyl Brook, East Pyl Brook, Chaffinch Brook and 33 others. These rivers have monitoring stations tracking water levels in real time.

Do I need flood insurance in Greater London?

If your property is in or near one of Greater London's 140 flood areas, flood insurance is strongly recommended. The government's Flood Re scheme helps make flood insurance affordable for at-risk properties.

How can I check flood risk for my postcode?

Use the Environment Agency's flood risk checker or our postcode lookup tool to check the flood risk for your specific address. You can also browse Greater London's flood areas on this page.

What was the worst flood in Greater London?

Greater London has experienced significant flooding events over the years. Check the Environment Agency's historical flood data and our UK Flood History guide for details on major events.

Flood Risk in Greater London

London

140

Flood Areas

Stations

Rivers

Risk Level

Very High

#9 of 152 counties

Flood Areas in Greater London

140 designated flood warning and alert areas

Name	River / Sea	Type
The Silk Stream and the Deans, Edgware, Dollis, Mutton, Wembley and Wealdstone Brooks and their tributaries	Silk Stream; Dollis Brook; Deans Brook; Edgware Brook; Mutton Brook; Wealdstone Brook; Wembley Brook	Alert
The Salmons Brook at Grange Park and Lower Edmonton including World's End	Salmons Brook	Warning
The River Brent in the London Borough of Brent including Tokyngton, Stonebridge and Alperton	River Brent	Warning
The River Brent from Hendon to Brentford including Brent Cross, Tokyngton, Alperton, Greenford and Hanwell	River Brent	Alert
River Thames at Thames Ditton Island including Boyle Farm Island	River Thames	Warning
River Thames at Thames Ditton Island including Boyle Farm Island	River Thames	Alert
River Wandle at Beddington Park including Hackbridge and Waddon, London Boroughs of Sutton and Croydon	River Wandle	Warning
River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton. Including the Norbury Brook from Thornton Heath to Too...	River Wandle	Alert
River Thames from Shepperton to West and East Molesey including Hamm Court, Walton-on-Thames and Sunbury	River Thames	Alert
River Wandle at Wandsworth including King Georges Park and Earlsfield, London Boroughs of Wandsworth and Merton	River Wandle	Warning
River Wandle at Morden, including Morden Hall Park, London Borough of Merton	River Wandle	Warning
River Graveney at Tooting and Colliers Wood, London Boroughs of Wandsworth and Merton	River Wandle	Warning
The River Pinn at Ickenham	River Pinn	Warning
The River Pinn and Woodridings Stream at Pinner, Eastcote, Ruislip, Ickenham, Uxbridge and Yiewsley	River Pinn	Alert
The River Pinn at Uxbridge including Hillingdon	River Pinn	Warning
River Quaggy at Chinbrook, Mottingham and Eltham, London Boroughs of Bromley, Lewisham and Greenwich	River Quaggy	Warning
Ravensbourne area in the London Boroughs of Lewisham, Bromley, Greenwich and Croydon. Including the River Quaggy, Kyd Brook, Chaffinch Brook and Po...	River Ravensbourne	Alert
Beck at Beckenham, London Borough of Bromley	Beck	Warning
The River Rom at Romford including Rush Green	Rom	Warning
The Yeading Brook at Hillingdon including Yeading	River Crane	Warning
The River Crane at Hillingdon, Southall, Cranford, Feltham and Twickenham	River Crane	Alert
Ravensbourne at Bromley Including Ravensbourne East Branch at Southborough, London Borough of Bromley	River Ravensbourne	Warning
Beverley Brook at Barnes, London Boroughs of Richmond upon Thames and Wandsworth	Beverley Brook	Warning
Beverley Brook area, including the Pyl Brook, in the London Boroughs of Merton, Sutton, Kingston upon Thames, Richmond upon Thames and Wandsworth	Beverley Brook, Pyl Brook, East Pyl Brook	Alert
River Thames from the River Brent to the River Crane including East Isleworth and Syon Park	River Thames	Warning
River Thames including areas in the boroughs of Kensington & Chelsea, Hammersmith & Fulham, Ealing and Hounslow	River Thames	Alert
River Thames including areas in the boroughs of Wandsworth and Richmond-upon-Thames	River Thames	Alert
The River Ingrebourne at Hornchurch including Upminster and Rainham	Ingrebourne	Warning
River Thames including areas in the boroughs of Tower Hamlets, the City of London, the City of Westminster and Kensington & Chelsea	River Thames	Alert
River Thames from Raven's Ait to Teddington Weir including, Raven's Ait, the Hogsmill River below the university Knights Park Campus, both Kingston...	River Thames	Warning
River Thames from Hampton and Thames Ditton to Teddington including Hampton Wick and Kingston-upon-Thames	River Thames	Alert
River Thames from The Mardyke to Barking Creek including Rainham Marshes, South Hornchurch, Ford Motor Works, Creekmouth, the New England Estate an...	River Thames	Warning
River Thames including areas in the boroughs of Havering, Barking and Dagenham, and Newham	River Thames	Alert
River Hogsmill area from Ewell to Kingston upon Thames, including the Surbiton Stream in Surbiton and the Green Lane Stream between Ewell and Epsom	Hogsmill	Alert
River Thames at Thames Ditton including Ditton Field and Ditton Reach	River Thames	Warning
River Thames from the Limehouse Basin to Blackfriar's Bridge including Shadwell, Wapping, St. Katherines Dock and Upper Thames Street	River Thames	Warning
River Thames at Teddington including Broom Road and Lower Teddington Road	River Thames	Warning
River Thames flood area near Greater London	River Thames	Warning
Pyl Brook at North Cheam including Kimpton Industrial Estate, London Boroughs of Merton and Sutton	Ply Brook	Warning
Shuttle flood area near Greater London	Shuttle	Warning
River Thames at East and West Molesey including Hurst Park, Buckingham Avenue and the Royal Mews area	River Thames	Warning
The River Pinn at Eastcote Village	River Pinn	Warning
The Turkey Brook at Enfield including Clay Hill	Turkey Brook	Warning
The Lower River Lee at Hackney and Walthamstow including Lea Bridge, Hackney Marsh and Hackney Wick	River Lee	Warning
Yeading Brook West at Ruislip Manor including North Harrow, Ruislip Gardens and North Hillingdon	Yeading Brook West	Warning
The Yeading Brooks East and West at Ruislip and Harrow	Yeading Brook West, Yeading Brook East	Alert
Pool River at Bell Green and New Beckenham, London Boroughs of Lewisham and Bromley	Pool River	Warning
River Thames from Putney Bridge to Mortlake High Street East including Barnes	River Thames	Warning
Beverley Brook at Worcester Park, including Motspur Park, London Boroughs of Kingston upon Thames and Sutton	Beverley Brook	Warning
River Thames at Kingston-upon-Thames town including, central Kingston, the area around Canbury Gardens and Albany Park Road	River Thames	Warning
River Thames at Trowlock Island including the Royal Canoe Club	River Thames	Alert
The Woodridings Stream at Pinner Green, Harrow	River Pinn	Warning
The Pymmes Brook at Upper Edmonton and Tottenham	Pymmes Brook	Warning
Beverley Brook at West Barnes, London Boroughs of Kingston upon Thames and Merton	Beverley Brook	Warning
The Silk Stream at Edgware and Colindale	Silk Stream	Warning
The River Pinn at Pinner, Harrow	River Pinn	Warning
River Thames at Beckton Sewage Works including East Ham	River Thames	Warning
Kyd Brook at Petts Wood, London Borough of Bromley	Kyd Brook	Warning
Beverley Brook at Raynes Park Including Beverley Way and Malden Golf Course, London Boroughs of Kingston upon Thames and Merton	Beverley Brook	Warning
River Thames including areas in the boroughs of Greenwich, Lewisham, Southwark, Lambeth and Wandsworth	River Thames	Alert
River Thames from the Hogarth Lane Roundabout to the River Brent including South Chiswick, Grove Park, Strand-on-the-Green and Brentford	River Thames	Warning
The River Crane at Southall including Hayes	River Crane	Warning
River Thames flood area near Greater London	River Thames	Warning
River Thames from Wandsworth Bridge to Putney Bridge including Wandsworth Centre	River Thames	Warning
The Edgware Brook at Stanmore including Little Stanmore	Edgware Brook	Warning
The Pymmes Brook at East Barnet including Cockfosters and New Southgate	Pymmes Brook	Warning
River Thames at Walton-on-Thames including Desborough Island, Walton Bridge and Elmbridge Leisure Centre	River Thames	Warning
The River Brent in the London Borough of Barnet including Brent Cross	River Brent	Warning
Ravensbourne from Bellingham to Catford, Including Beckingham Park, London Borough of Lewisham	River Ravensbourne	Warning
River Thames riverside from the Thames Barrier to Putney Bridge	River Thames	Alert
Chaffinch Brook and St James Stream at Elmers End and Upper Elmers End, including South Norwood Country Park, London Boroughs of Bromley and Croydon	Chaffinch Brook	Warning
River Hogsmill at Ewell Court, Ruxley and Old Malden, London Borough of Kingston upon Thames and Epsom and Ewell	Hogsmill	Warning
The River Beam at Dagenham including Rainham	Beam	Warning
The Yeading Brook East at South Ruislip	Yeading Brook East	Warning
The River Pinn at Ruislip	River Pinn	Warning
River Quaggy Flood Alleviation Scheme at Kidbrooke, Lee and Hither Green Including Sutcliffe Park, London Boroughs of Lewisham and Greenwich	River Quaggy	Warning
Norbury Brook at Thornton Heath and Streatham Vale, including Norbury and Norbury Park, London Boroughs of Croydon and Lambeth	River Wandle	Warning
The Wealdstone Brook at Kenton including Wealdstone and Wembley	Wealdstone Brook	Warning
River Wandle at Wimbledon including Colliers Wood, Merton Abbey, Connollys Mill, Summerstown and Wimbledon Stadium, London Borough of Merton	River Wandle	Warning
East Pyl Brook at Morden Park from the A24 to West Barnes, London Borough of Merton	Ply Brook	Warning
River Thames from Woolwich Arsenal to Deptford Creek including New Charlton, the Greenwich Peninsula, the Royal Naval College and Greenwich Town Ce...	River Thames	Warning
The Dollis Brook from Barnet to Hendon including Whetstone and Finchley	Dollis Brook	Warning
The River Pinn at Yiewsley including Cowley Peachey	River Pinn	Warning
The River Crane at Cranford and Feltham including North Feltham	River Crane	Warning
River Thames at Hampton and Hampton Wick including Hampton Court, properties on the Barge Walk, Hampton Court Palace Golf Club and Hampton Court Road	River Thames	Warning
River Thames riverside from Putney Bridge to Teddington Weir	River Thames	Alert
Beverley Brook at Wimbledon Common and Richmond Park including Kingston Vale and Robin Hood Gate and Roehampton, London Boroughs of Kingston upon T...	Beverley Brook	Warning
The Lower River Lee at Stratford including Mill Meads	River Lee	Warning
The Tidal River Crane at Twickenham	River Crane	Alert
River Hogsmill at Kingston, London Borough of Kingston upon Thames	Hogsmill	Warning
River Thames at Trowlock Island including the Royal Canoe Club	River Thames	Warning
Pyl Brook at West Barnes, London Borough of Merton	Ply Brook	Warning
The River Brent in the London Boroughs of Ealing and Hounslow including Greenford, and Hanwell	River Brent	Warning
The River Crane at Twickenham including Cole Park	River Crane	Warning
Ravensbourne at Deptford, London Boroughs of Lewisham and Greenwich	River Ravensbourne	Warning
The Tidal River Brent in Hounslow	River Brent	Alert
The Ching Brook in the London Borough of Waltham Forest, including Highams Park	Ching Brook	Warning
The Lower River Lee from West Ham to Canning Town	River Lee	Warning
The Mutton Brook at Hampstead Garden Suburb	Mutton Brook	Warning
Kyd Brook at Sundridge Park, Including Chiselhurst, London Borough of Bromley	Kyd Brook	Warning
The River Roding in Barking including East Ham	River Roding	Warning
The Tidal River Crane at Isleworth	River Crane	Warning
River Thames flood area near Greater London	River Thames	Warning
The Pymmes Brook from Bowes Park to Edmonton	Pymmes Brook	Warning
Ravensbourne at Lewisham, Including Ladywell, London Borough of Lewisham	River Ravensbourne	Warning
The Tidal River Brent at Brentford	River Brent	Warning
The Deans Brook at Edgware	Deans Brook	Warning
River Thames from Richmond Bridge to Teddington Weir including West Petersham and Ham Lands	River Thames	Warning
River Thames from the River Crane to Teddington Weir including St. Margaret's, Eel Pie Island, Strawberry Hill and East Teddington	River Thames	Warning
River Thames at Deptford including west Deptford, New Cross Gate and Southwark Park	River Thames	Warning
River Thames at Hammersmith and West Kensington including central Hammersmith, Olympia, Brook Green and West Kensington	River Thames	Warning
River Thames from Rotherhithe Station to London Bridge including Rotherhithe, north Bermondsey and London Bridge	River Thames	Warning
River Thames at Chiswick including Ravenscourt Park, west Shepherd's Bush, Stamford Brook, Turnham Green and Chiswick Park	River Thames	Warning
River Thames at South Bermondsey including the Den and areas between the Old Kent Road and the railway line	River Thames	Warning
River Thames at Camberwell including Burgess Park, north Camberwell and Kennington Park	River Thames	Warning
River Thames from Beckton Sewage Works to the River Lee including Beckton Gas Works, London City Airport, the ExCeL Centre, areas around the King G...	River Thames	Warning
River Thames from London Bridge to Hungerford Bridge including Borough, the South Bank, Elephant and Castle and Waterloo	River Thames	Warning
River Thames at the Isle of Dogs north of South Dock including Canary Wharf, Blackwall, South Bromley, Poplar and Limehouse	River Thames	Warning
River Thames at Beckton including Canning Town, Custom House, and Beckton	River Thames	Warning
River Thames at Walworth including south Elephant and Castle, Kennington and north Lambeth	River Thames	Warning
River Thames at the Isle of Dogs south of South Dock including areas around West India and Millwall Docks, Cubitt Town, and Mudchute	River Thames	Warning
River Thames at Mill Meads and East Plaistow including Star Lane, Plaistow, Mill Meads and south Stratford Marshes	River Thames	Warning
River Thames from Hungerford Bridge to Battersea Power Station including Waterloo, Albert Embankment, Vauxhall, Oval and Nine Elms	River Thames	Warning
River Thames from Battersea Bridge to Putney Bridge including Chelsea Harbour, Sands End, south Parsons Green and Hurlingham Park	River Thames	Warning
River Thames from Battersea Power Station to Battersea Bridge including Battersea	River Thames	Warning
River Thames at south Fulham including north Parsons Green, Walham Green and Eel Brook Common	River Thames	Warning
River Thames from Battersea Bridge to Wandsworth Bridge including west Battersea, Clapham Junction and east Wandsworth	River Thames	Warning
River Thames at north Fulham including Stamford Bridge, areas to the west of Earls Court, Barons Court and West Kensington	River Thames	Warning
River Thames from Deptford Creek to Rotherhithe Station including east Deptford, Convoys Wharf, Surrey Docks, Canada Water and the riverside at Rot...	River Thames	Warning
River Thames flood area near Greater London	River Thames	Warning
River Thames from Blackfriars Bridge to Vauxhall Bridge including Temple, Embankment and Houses of Parliament	River Thames	Warning
River Thames from Vauxhall Bridge to Battersea Bridge including Pimlico, Belgravia and Chelsea Embankment	River Thames	Warning
River Thames at Westminster including St James's Park, Victoria and Westminster Cathedral	River Thames	Warning
The River Rom at Collier Row	Rom	Warning
Properties on Meadow Lane, Amblecote Road and Chinbrook Road at risk of flooding from the River Quaggy at Chinbrook Meadows	River Quaggy	Warning
Surbiton Stream at Berrylands, Alexandra, Surbiton Hill, Tolworth and Hook Rise, London Borough of Kingston upon Thames	Surbiton	Warning
The Loxford Water including Hainault, Seven Kings and Ilford	Loxford Water	Alert
The Loxford Water at Seven Kings and Ilford	Loxford Water	Warning
The Kenton Brook feeding into the Wealdstone Brook	Kenton Brook, Brent	Warning
River Thames flood area near Greater London	River Thames	Warning

Monitoring Stations

0 Environment Agency monitoring stations

Rivers in Greater London

BeamBeckBeverley BrookBeverley Brook, Pyl Brook, East Pyl BrookChaffinch BrookChing BrookDeans BrookDollis BrookEdgware BrookHogsmillIngrebourneKenton Brook, BrentKyd BrookLoxford WaterMutton BrookPly BrookPool RiverPymmes BrookRiver BrentRiver CraneRiver LeeRiver PinnRiver QuaggyRiver RavensbourneRiver RodingRiver ThamesRiver WandleRomSalmons BrookShuttleSilk StreamSilk Stream; Dollis Brook; Deans Brook; Edgware Brook; Mutton Brook; Wealdstone Brook; Wembley BrookSurbitonTurkey BrookWealdstone BrookYeading Brook EastYeading Brook WestYeading Brook West, Yeading Brook East

Flood Insurance Warning for Greater London

Greater London has 140 designated flood areas and a very high flood risk rating. If you live in this area, check your buildings and contents insurance covers flood damage. Homes in high-risk areas may face higher premiums or require specialist cover.

Flood Insurance Guide →Planning & Flood Risk →