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4Warning no Longer in ForceThe warning is no longer in force
*Sources updated daily from the Environment Agency's API: https://environment.data.gov.uk/flood-monitoring/id/floods.

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 - 02 May, 2024

3


Oxfordshire, West Berkshire Groundwater flooding in the Lambourn Valley catchment

3


Hampshire Groundwater flooding in the Candovers and Old Alresford

3


Reading, West Berkshire, Wokingham River Kennet from Thatcham down to Reading

3


Hampshire, Wiltshire Groundwater flooding in Pitton, West Tytherley, Nether Wallop and Broughton

3


Swindon, West Berkshire, Wiltshire River Kennet and its tributaries from Berwick Bassett down to Newbury

3


Gloucestershire, Oxfordshire River Windrush from Bourton to Newbridge

3


Buckinghamshire, Oxfordshire Groundwater flooding in the Henley and Assendon area

3


Dorset Council Lower Frome and tributaries

3


Oxfordshire Ginge Brook

3


Hampshire, Wiltshire River Bourne and tributaries

3


West Sussex Groundwater flooding in West Dean, Singleton, Charlton, East Dean and Chilgrove

3


Hampshire Groundwater flooding in Twyford and Hensting

4


Buckinghamshire, Oxfordshire River Ray and its tributaries from Shipton Lee to and including Islip

3


West Sussex Aldingbourne and Barnham Rifes

3


Buckinghamshire, Greater London, Hillingdon, Slough, Surrey, Windsor and Maidenhead Colne Brook at Iver and Colnbrook

3


Buckinghamshire, Hertfordshire, Oxfordshire River Thame, Horsenden Stream and Chalgrove Brook

3


Dorset Council, Somerset South East Somerset Rivers, Upper Reaches

3


Oxfordshire, West Berkshire River Pang from East Ilsley to Pangbourne and Sulham Brook

3


Bournemouth, Christchurch and Poole, Dorset Council, Hampshire Lower Avon and tributaries

3


Gloucestershire River Coln and its tributaries

3


Dorset Council Weymouth Rivers and Streams

3


Buckinghamshire, Greater London, Hertfordshire, Hillingdon, Slough, Surrey, Windsor and Maidenhead Lower River Colne and Frays River

3


Hampshire Groundwater flooding in Vernham Dean, Upton and the Bourne Valley

3


West Berkshire Groundwater flooding in West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne

3


Hampshire Groundwater flooding in Kings Somborne and Little Somborne

3


West Berkshire River Lambourn and its tributaries from Upper Lambourn down to Newbury

3


Hampshire Groundwater flooding in Bishops Sutton

3


Hampshire, Wiltshire Groundwater flooding in villages surrounding Andover

3


Hampshire, West Sussex Groundwater flooding in Finchdean, Dean Lane End and Rowlands Castle

3


Hampshire Groundwater flooding in Bramdean and Cheriton

3


Hampshire Groundwater flooding in the Alton area

3


Hampshire Groundwater flooding in Hursley

3


Hampshire Groundwater flooding in Deane and Ashe in North Hampshire

3


Hertfordshire Groundwater flooding in Kimpton and Lilley Bottom

3


Hertfordshire Groundwater flooding in Flamstead

3


Hampshire Groundwater flooding in Hambledon

3


Cambridgeshire, Suffolk Groundwater flooding in Newmarket

3


Kent Nailbourne and Little Stour

3


Kent Groundwater flooding in East Kent

3


Barking and Dagenham, Bexley, Bromley, Croydon, Greater London, Greenwich, Havering, Kent, Kingston upon Thames, Lambeth, Lewisham, Merton, Newham, Southwark, Surrey, Sutton, Wandsworth Groundwater flooding in South East London

3


West Berkshire Groundwater flooding in the Leckhampstead area

3


West Berkshire Groundwater flooding in the Great Shefford area

3


West Sussex Groundwater flooding in upper River Ems Valley

4


Derbyshire, Leicestershire, Nottinghamshire Lower River Soar in Leicestershire

3


Devon, Torbay River Teign area

3


Devon, Somerset Rivers Clyst and Culm and their tributaries

3


Devon, Somerset Rivers Otter and Sid, and Exmouth area

3


Devon, Dorset Council, Somerset River Axe area

3


Buckinghamshire River Wye and The Hughenden Stream

4


Gloucestershire, South Gloucestershire, Wiltshire Upper Bristol Avon area

3


Bath and North East Somerset, Wiltshire Mid Bristol Avon area

3


Cambridgeshire River Great Ouse in Cambridgeshire from Brampton to Earith

3


Bracknell Forest, Surrey, Windsor and Maidenhead Chertsey Bourne

3


Devon, Somerset Exmoor Rivers

3


Devon, Somerset Middle Exe area

3


Cornwall, Devon Upper River Tamar

4


Bath and North East Somerset, North Somerset, Somerset River Chew catchment

3


Devon, Dorset Council West Dorset Rivers and Streams

3


Dorset Council, Somerset South Somerset Rivers, Upper Reaches

3


Devon, Somerset River Tone catchment

3


Buckinghamshire Groundwater flooding in the High Wycombe area

3


Hampshire, Surrey, West Sussex Upper River Wey

3


Wiltshire River Ebble and tributaries

3


Devon Mid Devon Rivers

3


Somerset West Somerset Streams

2


Dorset Council Upper Frome at Maiden Newton

3


Dorset Council Upper Frome and tributaries

3


Dorset Council Purbeck Rivers and Streams

4


Isle of Wight Eastern Yar

2


Devon River Yarty from Yarcombe to Axminster

2


Devon, Dorset Council, Somerset River Axe (Upper) from Winsham to Axminster, including Chard Junction and Weycroft

2


Devon River Culm (Upper) from Hemyock to Cullompton
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