Is Wiltshire at risk of flooding?

Wiltshire has 79 designated flood areas monitored by the Environment Agency, giving it a High risk rating. It ranks #22 out of 152 English counties for flood risk.

How many flood warning areas are in Wiltshire?

There are 79 flood warning and alert areas in Wiltshire, monitored by 0 Environment Agency stations across 35 rivers.

Which rivers flood in Wiltshire?

The main rivers in Wiltshire include Ampney Brook, Bristol River Avon, Broadmead Brook, By Brook, Dauntsey Brook and 30 others. These rivers have monitoring stations tracking water levels in real time.

Do I need flood insurance in Wiltshire?

If your property is in or near one of Wiltshire's 79 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 Wiltshire's flood areas on this page.

What was the worst flood in Wiltshire?

Wiltshire 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 Wiltshire

South West

Flood Areas

Stations

Rivers

Risk Level

High

#22 of 152 counties

Flood Areas in Wiltshire

79 designated flood warning and alert areas

Name	River / Sea	Type
Riverside properties on Old Sodom Lane, The Green and Dauntsey Green including Earl Danbys Primary School. Sodom Lane including Barn Farm and Everg...	Dauntsey Brook	Warning
Upper River Avon and tributaries including Malmesbury, Dauntsey, Chippenham and Calne	Bristol River Avon	Alert
County Way Road to River Way Road, including the Library, the area around Town Bridge and River Way Road and other riverside roads and properties i...	River Biss	Warning
Ebbesbourne Wake, Bower Chalke, Broad Chalke, Bishopstone, Stratford Tony and Coombe Bissett	River Ebble	Warning
Tributaries between Alvediston and Nunton	Ebble	Alert
River Og at Southend and Ogbourne St. Andrew	River Og	Warning
River Kennet from Berwick Bassett to Newbury including Winterbourne Monkton, Marlborough, Ramsbury, Hungerford, Denford, Kintbury and Newbury; also...	River Kennet, River Og, River Aldbourne, Froxfield Stream, River Dun, River Shalbourne	Alert
River Churn from Coberley to Cerney Wick and also The Hilcot Brook, The Daglingworth Stream and The Gumstool Brook	River Churn, Hilcot Brook, Daglingworth Stream, Gumstool Brook	Alert
Tributaries between Norton Ferris and Wilton	Wylye	Warning
River Kennet at Marlborough including the confluence with the River Og	River Kennet, River Og	Warning
Groundwater flooding in the Ebble Valley including Berwick St John, Ebblesbourne Wake, Bowerchalke, Broad Chalke, Stoke Farthing, Bishopstone, Stra...	Groundwater	Warning
Hampshire River Avon flood area near Wiltshire	Hampshire River Avon	Warning
River Thames from Calcutt to Lechlade including Hannington Wick	River Thames	Warning
River Thames and its small tributaries from Calcutt to Lechlade including The Marston Meysey Brook and The Downington Brook	River Thames, Blunsdon Brook, Water Eaton Brook, Marston Meysey Brook, Share Ditch, Bydemill Brook, Westrop Brook, Downington Brook	Alert
Ampney Brook from Ampney Crucis to Sheeppen Bridge near Latton	Ampney Brook	Warning
Ampney Brook from Barnsley Wood to Sheeppen Bridge near Latton including Ampney Crucis	Ampney Brook	Alert
Hampshire River Avon flood area near Wiltshire	Hampshire River Avon	Warning
Tributaries between Upavon and Salisbury	Hampshire River Avon	Alert
South Lane, The Borough, Green Lane and Orchard View in Downton	River Avon	Warning
River Kennet from Mildenhall to just above Hungerford including Ramsbury and Chilton Foliat	River Kennet	Warning
South Street between Bull Bridge and the Library including the Surgery, Michael Herbert Hall and carpark and the Allotment Gardens in Wilton	River Nadder	Warning
River Nadder and tributaries between Donhead St Mary and Salisbury	River Nadder	Alert
River Ray and Swinbourne for the West Swindon Area down to but not including Water Eaton	River Ray	Alert
River Nadder flood area near Wiltshire	River Nadder	Warning
Areas at risk of groundwater flooding in the Upper Aldbourne Valley including Aldbourne	Groundwater	Alert
Olivemead Lane, The Green and Sodom Lane including Great Dairy Farm. Church Lane including Dauntsey Fields Farm and Union Farm and the Swallet Gate...	Dauntsey Brook	Warning
Areas at risk of groundwater flooding in the Upper Og Valley	Groundwater	Alert
River Bourne flood area near Wiltshire	River Bourne	Warning
River Key from the Bentham area to Cricklade including Purton Stoke	River Key	Warning
Flagham Brook, The Swill Brook, The Hankerton Brook, The Hykemeres Stream, The Derry Brook and The River Key	Flagham Brook, Swill Brook, Hankerton Brook, Hykemeres Stream, Derry Brook, River Key	Alert
River Thames from Somerford Keynes to Cricklade including Ashton Keynes	River Thames	Warning
River Thames from Ewen to Cricklade including Somerford Keynes and Ashton Keynes	River Thames, Ashton Field Brook	Alert
Marston Meysey Brook from near Wetstone Bridge to just above Fairford Airfield	Marston Meysey Brook	Warning
Groundwater flooding for the Collingbournes	Groundwater	Warning
Cadley, Collingbourne Kingston, Sunton and Collingbourne Ducis	River Bourne	Warning
Hampshire River Avon flood area near Wiltshire	Hampshire River Avon	Warning
River Ray from the Elborough Bridge near the B4553 Purton Road area in Swindon down to but not including Water Eaton	River Ray	Warning
River Wylye flood area near Wiltshire	River Wylye	Warning
River Nadder flood area near Wiltshire	River Nadder	Warning
River Churn at Cerney Wick	River Churn	Warning
River Wylye flood area near Wiltshire	River Wylye	Warning
Broadmead Brook at West Kington	Broadmead Brook	Warning
River Biss flood area near Wiltshire	River Biss	Warning
Swill Brook from below Oaksey to the confluence with the River Thames	Swill Brook	Warning
Heather Shaw Road and West Ashton Road on the Paxcroft Brook and riverside properties on the Lambrok Stream including low lying land at Southwick a...	Paxcroft Brook, Lambrok Stream	Warning
Southampton Road Industrial Estate, Dolphin Park Industrial Estate and the Muttons Bridge Area	River Bourne, River Avon	Warning
Hampshire River Avon flood area near Wiltshire	Hampshire River Avon	Warning
River Kennet from Berwick Bassett to Fyfield including Winterbourne Monkton	River Kennet	Warning
Great Durnford, Upper Woodford, Middle Woodford, Lower Woodford and Little Durnford	Hampshire River Avon	Warning
River Avon flood area near Wiltshire	River Avon	Warning
Groundwater flooding for Tilshead, Orcheston, Shrewton, Winterborne Stoke, Berwick St James and Stapleford	Groundwater	Warning
Heytesbury, Suffers Bridge, Boyton, Codford St Peter, Wylye and Great Wishford in Wilton	River Wylye	Warning
Southampton Road Retail Park, Salisbury Business Park on Dairy Meadow Lane and Dairyhouse Bridge Caravan Site	Hampshire River Avon	Warning
River Kennet, the River Dun and the River Shalbourne at Hungerford and Eddington	River Kennet, River Dun, River Shalbourne	Warning
Groundwater flooding for Chitterne, Codford St Peter and Codford St Mary	Groundwater	Warning
Bristol River Avon flood area near Wiltshire	Bristol River Avon	Warning
Sherston Avon flood area near Wiltshire	Sherston Avon	Warning
Bristol River Avon flood area near Wiltshire	Bristol River Avon	Warning
Bristol River Avon flood area near Wiltshire	Bristol River Avon	Warning
West Lavington to Whaddon including Littleton Panell, Great Cheverell, Worton, Bulkington, Littleton and Semington	Semington Brook	Warning
Bristol Avon and tributaries from downstream of Chippenham to Melksham including Reybridge, Lacock and Bewley Court	Bristol River Avon	Warning
Tetbury Avon flood area near Wiltshire	Tetbury Avon	Warning
Bristol River Avon flood area near Wiltshire	Bristol River Avon	Warning
Bristol Avon and tributaries from downstream of Malmesbury to Chippenham including Cow Bridge, Hullavington, Corston, Rodbourne, Kingsmead Mill, Gr...	Bristol River Avon	Warning
Sherston Avon from Luckington to upstream of Malmesbury including Brook End on the Luckington Brook, Sherston and Easton Grey	Sherston Avon	Warning
Groundwater flooding for Warminster	Groundwater	Warning
Groundwater flooding for Chilmark	Groundwater	Warning
Groundwater flooding for Wilton	Groundwater	Warning
Groundwater flooding for Teffont and Teffont Evis	Groundwater	Warning
Groundwater flooding for the Dene including Hindon, Fonthill Bishop, Fonthill Gifford and Chicklade	Groundwater	Warning
Groundwater flooding for the Wylye Valley from south of Warminster to Wilton	Groundwater	Warning
Groundwater flooding for the Avon Valley including Amesbury, Great Durnford, Upper Woodford, Middle Woodford and Lower Woodford	Groundwater	Warning
Groundwater flooding for the Upper Avon Valley and the Nine Mile River	Groundwater	Warning
The Street and Water Lane in Castle Combe	By Brook	Warning
Lower Road and Church Lane	Hampshire River Avon	Warning
Low lying properties on Mill Lane	Hampshire River Avon	Warning
Hampshire River Avon flood area near Wiltshire	Hampshire River Avon	Warning
Stratford Road, Castle Keep, Shelley Drive and Allotment Gardens	Hampshire River Avon	Warning
Health and Community Services at Millstream House and The Boulter Centre	Hampshire River Avon	Warning

Monitoring Stations

0 Environment Agency monitoring stations

Rivers in Wiltshire

Ampney BrookBristol River AvonBroadmead BrookBy BrookDauntsey BrookEbbleFlagham Brook, Swill Brook, Hankerton Brook, Hykemeres Stream, Derry Brook, River KeyGroundwaterHampshire River AvonMarston Meysey BrookPaxcroft Brook, Lambrok StreamRiver AvonRiver BissRiver BourneRiver Bourne, River AvonRiver ChurnRiver Churn, Hilcot Brook, Daglingworth Stream, Gumstool BrookRiver EbbleRiver KennetRiver Kennet, River Dun, River ShalbourneRiver Kennet, River OgRiver Kennet, River Og, River Aldbourne, Froxfield Stream, River Dun, River ShalbourneRiver KeyRiver NadderRiver OgRiver RayRiver ThamesRiver Thames, Ashton Field BrookRiver Thames, Blunsdon Brook, Water Eaton Brook, Marston Meysey Brook, Share Ditch, Bydemill Brook, Westrop Brook, Downington BrookRiver WylyeSemington BrookSherston AvonSwill BrookTetbury AvonWylye

Flood Insurance Warning for Wiltshire

Wiltshire has 79 designated flood areas and a 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 →