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4Warning no Longer in ForceThe warning is no longer in force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 - 25 Jan, 2025

3


Gloucestershire, Oxfordshire River Windrush from Bourton to Newbridge

3


Dorset Council, Somerset South East Somerset Rivers, Upper Reaches

3


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

4


Shropshire, Staffordshire, Telford and Wrekin Tern and Perry catchments

3


Bracknell Forest, Surrey, Windsor and Maidenhead Chertsey Bourne

3


Dorset Council Lower Frome and tributaries

3


East Sussex Combe Haven

3


Dorset Council, Somerset South Somerset Rivers, Upper Reaches

3


Somerset River Yeo and River Parrett Moors around Muchelney and Thorney

3


Bath and North East Somerset, Wiltshire Mid Bristol Avon area

3


East Sussex Cuckmere River

3


East Sussex River Uck

3


Devon, Somerset Rivers Clyst and Culm and their tributaries

4


Dorset Council, Somerset Rivers Yeo and Parrett, downstream of Yeovil to Steart

3


Gloucestershire, Herefordshire, Worcestershire River Leadon catchment

3


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

3


East Sussex, West Sussex River Adur East Branch

3


Devon, Dorset Council, Somerset River Axe area

4


Herefordshire, Shropshire Upper Teme

3


Devon, Torbay River Teign area

4


Devon, Somerset Rivers Otter and Sid, and Exmouth area

4


Devon, Dorset Council West Dorset Rivers and Streams

3


Windsor and Maidenhead, Wokingham Lower River Loddon

4


Bournemouth, Christchurch and Poole Christchurch Harbour

4


Devon South Devon Rivers

3


Gloucestershire Rivers in the Forest of Dean

3


Cheshire West and Chester, Shropshire River Dee catchment in England from Whitchurch to Chester

3


North Yorkshire, York Upper River Ouse

4


Devon, Torbay River Dart area

3


Dorset Council, Hampshire, Wiltshire Groundwater flooding in the Cranborne Chase area

3


Hampshire, Wiltshire River Bourne and tributaries

4


Dorset Council, Somerset River Yeo from Sherborne to Yeovil

4


Dorset Council, Somerset River Parrett (upper) from South Perrott to Thorney

3


Dorset Council River Piddle and tributaries

2


Wiltshire Middle Hampshire Avon at Britford, Salisbury

3


Hampshire, Wiltshire Groundwater flooding in the Salisbury Plain area

3


West Berkshire Groundwater flooding in the Great Shefford area

3


Oxfordshire, West Berkshire Groundwater flooding in the Lambourn Valley catchment

3


Hampshire Groundwater flooding in the Candovers and Old Alresford

3


Hertfordshire Groundwater flooding in Flamstead

3


Hertfordshire Groundwater flooding in Kimpton and Lilley Bottom

3


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

3


Hampshire Groundwater flooding in Hursley

3


Hampshire, Wiltshire Groundwater flooding in villages surrounding Andover

3


Hampshire Groundwater flooding in Deane and Ashe in North Hampshire

3


Buckinghamshire, Oxfordshire Groundwater flooding in the Henley and Assendon area

2


Wiltshire Groundwater flooding for the Till

3


Leeds, North Yorkshire, York Tidal River Ouse from Naburn Lock to Selby
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