Flood Warning & Alert Types


 
ImageLevelNameMeaning
1Severe Flood WarningSevere Flooding, Danger to Life.
2Flood WarningFlooding is Expected, Immediate Action Required.
3Flood AlertFlooding is Possible, Be Prepared.
4Warning no Longer in ForceThe warning is no longer in force

Flood level warnings are categorised in severity by a numbering system as shown in the table above. The highest type of flood alert is 1, whereas the lowest type of flood notice is 4.

Flood Alerts, Warnings & Notices - 13 Jun, 2025



3


Croydon, Greater London, Lambeth, Merton, Sutton, Wandsworth
River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton

3


Bexley, Bromley, Greater London, Kent
Shuttle and Cray

3


Solihull, Warwickshire
River Blythe in Warwickshire

3


Bromley, Croydon, Greater London, Greenwich, Lewisham
Ravensbourne area in the London Boroughs of Lewisham, Bromley, Greenwich and Croydon

3


Greater London, Kingston upon Thames, Merton, Richmond upon Thames, Surrey, Sutton, Wandsworth
Beverley Brook area in Merton, Sutton, Kingston upon Thames, Richmond upon Thames and Wandsworth

3


Greater London, Kingston upon Thames, Surrey
River Hogsmill area from Ewell to Kingston upon Thames

3


Dudley, Sandwell, Staffordshire, Wolverhampton, Worcestershire
River Stour and Smestow Brook in the Black Country and South Staffordshire

3


Surrey
River Rythe from Oxshott to Thames Ditton

3


Surrey, West Sussex
Upper River Mole, Ifield Brook, Gatwick Stream and Burstow Stream

3


Derbyshire
Tributaries in North Derbyshire

3


Surrey
River Mole and its tributaries from Kinnersley Manor to South Hersham

3


Kent
Rivers on the Isle of Sheppey

3


Nottinghamshire
River Maun in Nottinghamshire

3


Nottingham, Nottinghamshire
River Leen, Day Brook and Tottle Brook in Nottinghamshire

3


Cornwall, Devon
Upper River Tamar

3


Devon, Torbay
River Teign area

3


Surrey
Redhill Brook at Redhill and Salfords Stream at Salfords

3


Devon, Plymouth
River Plym and Tory Brook

3


Cornwall
West Cornwall Rivers

3


Devon, Plymouth
River Yealm

3


Devon
South Devon Rivers

3


Devon
North Dartmoor Rivers

3


Birmingham
River Rea

3


Devon, Torbay
River Dart area

3


Birmingham, Dudley, Sandwell, Solihull, Walsall, Warwickshire, Wolverhampton
Upper Tame

3


Devon
Lower Torridge area

3


Derbyshire
Bottle Brook in Derbyshire

3


Derby, Derbyshire, Leicestershire, Staffordshire
Tributaries in South Derbyshire

3


Birmingham, Sandwell
Upper Tame at Sandwell Valley

3


Bexley, Greater London, Kent
River Darent from Westerham to Dartford

3


Barnet, Enfield, Essex, Greater London, Haringey, Hertfordshire, Redbridge, Waltham Forest
Lower Lee tributaries

3


Essex, Southend-on-Sea
The River Roach, Prittle Brook and Eastwood Brook

3


Essex, Greater London, Havering
River Ingrebourne at Harold Park and Hornchurch

3


Birmingham, Solihull, Warwickshire, Worcestershire
River Cole

3


Essex, Hertfordshire
River Stort and Stansted Brook catchment

3


Leicester, Leicestershire
Tributaries in Leicester City

3


Nottingham, Nottinghamshire
River Trent Tributaries in Nottinghamshire

3


Leicestershire, Nottinghamshire
Loughborough urban watercourses and local tributaries to the River Soar

3


Derbyshire, Nottinghamshire
River Erewash Tributaries in Derbyshire and Nottinghamshire

2


Devon
River Avon from Didworthy to Aveton Gifford

3


Greater London, Harrow, Hillingdon
River Pinn and Woodridings Stream

3


Barnet, Brent, Greater London, Harrow
Silk Stream and the Deans, Edgware, Dollis, Mutton and Wealdstone Brooks

3


Barking and Dagenham, Essex, Greater London, Havering
Rivers Beam and Rom

3


Ealing, Greater London, Harrow, Hillingdon
Yeading Brooks in London Boroughs of Harrow and Hillingdon

3


Essex
Canons Brook from Harlow to Parndon Mead

3


East Sussex
Polegate and Wannock

3


East Sussex
Hollington Stream

2


Devon
River Avon at South Brent, Avonwick and Aveton Gifford
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