Is Unknown at risk of flooding?

Unknown has 0 designated flood areas monitored by the Environment Agency, giving it a Low risk rating. It ranks #166 out of 152 English counties for flood risk.

How many flood warning areas are in Unknown?

There are 0 flood warning and alert areas in Unknown, monitored by 2564 Environment Agency stations across 1106 rivers.

Which rivers flood in Unknown?

The main rivers in Unknown include Addlestone Bourne, Aire Washlands, Alconbury Brook, Aldford Brook, Aldingbourne Rife and 1101 others. These rivers have monitoring stations tracking water levels in real time.

Do I need flood insurance in Unknown?

If your property is in or near one of Unknown's 0 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 Unknown's flood areas on this page.

What was the worst flood in Unknown?

Unknown 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 Unknown

England

Flood Areas

2564

Stations

1106

Rivers

Risk Level

Low

#166 of 152 counties

Flood Areas in Unknown

0 designated flood warning and alert areas

Name	River / Sea	Type

Monitoring Stations

2564 Environment Agency monitoring stations

Bourton Dickler

River Dikler

Cotswolds

Surfleet Sluice

River Glen

Welland

Gaw Bridge

River Parrett

Parrett, Brue and West Somerset Streams

Hemingford

River Great Ouse

Upper and Bedford Ouse

Swindon

Smestow Brook

Worcestershire Middle Severn

Penryn Trelawney Park

Praze Stream

Fal and St Austell Streams

A6 Bridge

River Brock

Lune and Wyre

Netherside Hall

River Wharfe

Wharfe and Lower Ouse

Ardingly

River Ouse

Ouse

Letcombe Regis

Letcombe Brook

Vale of White Horse

Bradley Bridge

Bradley Brook

Bristol Avon Little Avon Axe and North Somerset St

Lovington

River Brue

Parrett, Brue and West Somerset Streams

Goulceby

River Bain

Witham

Lowestoft

Tide

England - East Coast

Northern Moor

Baguley Brook

Upper Mersey

Collyhurst Weir

River Irk

Northern Manchester

Haslingfield Burnt Mill

River Rhee

Cam and Ely Ouse (Including South Level)

Pinner, Eastcote Road

River Pinn

Pinn

Chineham

Petty's Brook

Loddon

Luton, Toddington Road

River Lee

Upper Lee

Salisbury Ashley Road

River Avon

Hampshire Avon

Yeaton

River Perry

Shropshire Middle Severn

Kingston

River Thames

Thames from Hurley to Teddington

Addingham, Town Beck

Town Beck

Wharfe and Lower Ouse

Litton Cheney

Litton Cheney Stream

West Dorset Streams

Rede Bridge

River Rede

Tyne

Rochdale

River Roch

Northern Manchester

Twyford Bridge

River Poulter

Idle and Torne

Rolster Bridge

River Harbourne

Teign Torbay and South Hams

Bragbury Park

Stevenage Brook

Beane

Showing 30 of 2564 stations

Rivers in Unknown

Addlestone Bourne Aire Washlands Alconbury Brook Aldford Brook Aldingbourne Rife Aller Brook Allison Dyke Alphin Brook Alverthorpe Beck Ampney Brook Amwell Loop Arkle Beck Arrowe Brook Ash Brook Atherfield Brook Atherton Lake Brook Babingley River Back Delfin Badsey Brook Bagley Brook Bagley Dike Baguley Brook Baildon Dyke Baker Lane Brook Balne Beck Barbourne Brook Bardsey Beck Barge Canal Barkby Brook Barlings Eau Barmston Main Drain Barnham Rife Bartley Water Barton Haven Bassenthwaite Lake Batley Beck Bear Brook Beaulieu River Beauvale Brook Bedale Beck Bedburn Beck Belford Burn Bessy Brook Beverley Brook Beverley and Barmston Drain Bickerly Mill Stream Bielby Beck Billinghay Skirth Bin Brook Birkey Burn Bishop Monkton Beck Black Brook Blackburn Brook Blackfoss Beck Blackwater River Blacup Beck Blind Beck Bloxham Brook Blue Beck Bodmin Town Leat Bolingey Stream Borehamwood Brook Borough Beck Borsdane Brook Bosham Stream Bottle Brook Boundary Brook Bourn Brook Bourne Brook Bourne Rivulet Bourne Tributary Medway Bow Brook Bowmont Water Boyces Brook Bradford Beck Bradiford Water Bradley Brook Bradwell Brook Bramfield Watercourse Bramham Beck Brampton Beck Brampton Brook Braunstone Brook Bridgehouse Beck Brinkworth Brook Brislington Brook Bristol Frome Broad Fleet Broadlane Beck Brompton Beck Brook Dike Brough Beck Brough Clough Broughton Beck Broughton Brook Browney Dyke Brownwich Stream Buck Beck Budleigh Brook Bugbrooke Brook Bulstake Stream Bumpstead Brook Burn Valley Beck Burrow Beck Burstow Stream Burstwick Drain Bury Brook Bushby Brook Bushy Beck By Brook Caker Stream Calow Brook Candover Stream Canley Brook Cannington Brook Cannon Brook Canons Brook Carnon River Carr Brook Carrant Brook Catcliffe Drain Ceiriog Chad Brook Chalgrove Brook Charlton Brook Cheddar Yeo Cheriton Stream Chertsey Bourne Chew Stoke Brook Ching Brook Chitterne Brook Chorlton Brook Christchurch Coast Church Beck Clackers Brook Clanfield Brook Clay Coton Brook Clennon Valley Watercourse Clifton Beck Clipstone Brook Clow Beck Coal Burn Coastal Stream Cobbins Brook Cock Beck Cocker Beck Cockers Dyke Cockshaw Burn Cod Beck Cole Brook Colliters Brook Colne Brook Colne Water Combe Haven Coney Gut Congresbury Yeo Coniston Water Coppice Brook Costa Beck Cound Brook Counter Drain Cove Brook Cowbridge Beck Cragg Brook Cranleigh Waters Cringle Brook Cripsey Brook Crook Beck Crow Green Stream Cuckmere & Pevensey Levels Cundall Beck Cunsey Beck Currymoor Drain Dacre Beck Danes Stream Daniels Brook Dauntsey Brook Dawlish Water Day Brook De Lank River Dean Dean Bottom Beck Dean Burn Deans Brook Dearne Washlands Derwentwater Dimore Brook Docken's Water Dollis Brook Doniford Stream Dorcan Brook Dorset Coast Dover Beck Dovers Brook Dowles Brook Dragley Beck Driffield Trout Stream Dudwell Tributary Rother Dulas Brook Dun Navigation Canal Durranhill Beck Ea Beck Eagley Brook Earby Beck East Clandon Stream East Dart River East Fen Catchwater East Glen River East Lyn River East Okement River East Stour Trib Great Stour East Wilder Brook Eastburn Beck Eastern Yar Eden Tributary Medway Edgware Brook Eea River Egginton Brook Ellenor Brook Eller Beck Elvington Beck Emm Brook Endon Brook Eridge Stream Tributary Medway Essex Coast Evington Brook Ewelme Brook Ewood Mill Race Exe Estuary Exminster Marshes Farnley Beck Fenay Beck Field Drain Finchett's Gutter Finham Brook Fishlake Stream Fleet Brook Fleet Drain Flood Channel Folly Clough Ford Brook Ford Green Brook Ford Stream Fosdyke Canal Foston Beck Foston Brook Foudry Brook Fowlea Brook Fowler Bridge Drain Frays River Frodingham Beck Gaddesby Brook Garren Brook Gatwick Stream Gauze Brook Gill Beck Gilwiskaw Brook Ginge Brook Glaze Brook Glen Stream Glenridding Beck Glossop Brook Glynch Brook Golden Brook Gowdall Ings Grace Dieu Brook Great Raveley Drain Great Stour Green Dyke Grimescar Dike Groundwater Level Gurnard Luck Gwyle Gypsey Race Hagnaby Beck Halford Stream Halse Water Harpers Brook Hartburn Beck Harwood Beck Hatherley Brook Haweswater Beck Haweswater Reservoir Hawkcombe Stream Heacham River Hebble Brook Hebden Beck Hebden Water Heighington Beck Hele Stream Hellifield Beck Henmore Brook Hermitage Stream Heys Brook Higher Brixham Watercourse Hillfarrance Brook Hilton Brook Hinksey Stream Hodge Beck Hoe Stream Hogshaw Brook Hogsmill River Hol Beck Holderness Drain Holgate Beck Holme Brook Horner Water Horsbere Brook Horsebridge Dyke Hovingham Beck Hughenden Stream Huish Level Rhyne Huntingfield Watercourse Ifield Brook Illey Brook Ings Beck Irish Sea Jubilee River Kelbrook Beck Kenwater Kenwith Stream Keyingham Drain Kielder Burn Killhope Burn Kilton Beck Kings Sedgemoor Drain Kingsbridge North Watercourse Kingsclere Brook Kirk Beck Knoll Beck Knowle Stream Kyd Brook Kyre Brook Laceby Beck Lambrok Stream Land Yeo Landkey Brook Lands Beck Langford Brook Lariggan River Law Brook Ledwyche Brook Leigh Brook Letcombe Brook Levisham Beck Lilley Brook Limey Water Little Avon River Little Bull Pit Swallet Little Caldew Little Dart River Little Stour Littlemead Brook Litton Cheney Stream Lochinvar Beck Loftus Beck Lonco Brook Long Brook Longload Main Drain Longwood Brook Low Moor Beck Lowfield Drain Loxford Water Lukely Brook Lune And Wyre Lustrum Beck Lyme Brook Lymington Maidenhead Ditch Manacan River Manchester ship canal Mangerton Brook Marchington Brook Markeaton Brook Market Weighton Canal Marsh Water Marston Meysey Brook Marton West Beck Maud Foster/Stonebridge Drain Meadlake Ditch Meanwood Beck Mearley Brook Medbourne Brook Meece Brook Meers Brook Mells River Melton Brook Mevagissey Stream Micker Brook Micklehurst Brook Mickley Dyke Midford Brook Mill Beck Mill Bourne Mill Brook Millingford Brook Mimmshall Brook Mires Beck Monk Dyke Monks Brook Monksilver Stream Monktonmead Brook Moors Burn Moors River Morris Brook Motcombe Stream Mutton Brook Nailbourne Nailsworth Stream Nazeing Brook Netherley Brook Nettleham Beck New Cut New Mill Dike Newlyn Coombe River Norbury Brook Norfolk Coast North Cornwall Coast North Drain North Norfolk Coast North Sea North Somerset Coast Northbrook Northmoor Main Drain Nunney Brook Oakenshaw Beck Oakington Brook Oakley Cross Beck Ogden Brook Oil Mill Beck Old Mill Stream Old River Brock Old River Tone Oldbury Naite Rhyne Oldbury Tidal Naite Rhyne Ormesby Beck Otterton Brook Oulton Beck Ouse Burn Ouse Dyke Oxlease Drain Oxton Dumble Par River Parham Beck Peakshole Water Pearl Brook Pen Leach Brook Penberth Stream Pendle Water Pent Stream Pentre Brook Perrancombe Stream Petersfield Stream Petty's Brook Pickering Beck Picknall Brook Piddle Brook Pillhill Brook Pimlico Brook Pincey Brook Pishiobury Brook Platt Brook Poaka Beck Pocklington Beck Pods Brook Pointon Lode Poise Brook Ponsandane Stream Porter Brook Poyle Channel Poynton Brook Praze Stream Priorpot Beck Pudding Brook Pyl Brook Pymmes Brook Quorn Brook Quy Water Radlett Brook Radley Park Ditch Rags Brook Rattlesden River Rea Brook Rearsby Brook Red Burn Redhill Brook Reservoir Retford Beck Ridings Brook Rising Brook Rivacre Brook Rive Ditch River Adur River Aire River Alde River Allen River Aller River Alne River Alre River Alt River Alver River Amber River Ancholme River Anker River Ant River Anton River Arrow River Arun River Ash River Ashburn River Asker River Avon River Axe River Bain River Barle River Batherm River Beal River Beam River Beane River Bela River Beult River Birket River Biss River Blackwater River Blakewater River Blithe River Blyth River Blythe River Bollin River Bourne River Bovey River Bovey Tributary River Box River Boyd River Brain River Brant River Brathay River Bray River Brede River Brent River Brett River Bride River Brit River Brock River Browney River Brue River Brun River Bulbourne River Bull River Bure River Burn River Caen River Caen (Tidal)River Calder River Caldew River Cale River Cam River Camel River Can River Char River Chater River Chelmer River Chelt River Cherwell River Chess River Chew River Churn River Churnet River Clun River Clyst River Clyst Tributary River Cober River Cocker River Cole River Coln River Colne River Coly River Conder River Coquet River Corve River Crake River Crane River Cray River Creedy River Crimple River Croal River Crouch River Cuckmere River Culm River Dane River Darent River Dart River Darwen River Dearne River Deben River Dee River Dene River Derwent River Dever River Devon River Dikler River Doe Lea River Don River Dore River Douglas River Dour River Dove River Drone River Duddon River Dun River Dunsop River Eamont River East Allen River Eau River Ebble River Ecclesbourne River Eden River Ehen River Ellen River Ems River Enborne River Erewash River Erme River Esk River Etherow River Evenlode River Exe River Eye Brook River Fal River Flit River Font River Foss River Foulness River Fowey River Frome River Frome (Severn)River Frome (Wye)River Fromus River Gade River Gannel River Gaunless River Gelt River Gipping River Glaven River Glem River Glen River Glenderamackin River Glyme River Gowan River Gowy River Goyt River Granta River Graveney River Great Ouse River Greet River Greta River Haddeo River Hamble River Hamps River Harbourne River Harbourne Tributary River Hart River Hartburn River Hayle River Hindburn River Hipper River Hiz River Hodder River Holme River Hooke River Hull River Hyndburn River Idle River Ingrebourne River Inny River Irk River Irt River Irthing River Irwell River Isbourne River Ise River Isle River Itchen River Ivel River Iwerne River Jordan River Keekle River Keer River Kenn Tributary River Kennall River Kennet River Kennett River Kensey River Kent River Kenwyn River Key River Kyle River Kym River Lambourn River Lark River Lavant River Laver River Leach River Leadon River Leam River Lee River Leen River Lemon River Leven River Lew River Lim River Lin River Little Ouse River Lod River Lodden River Loddon River Lostock River Lowman River Lowther River Lox River Loxley River Lud River Lugg River Lune River Lyd River Lymn River Lynher River Manifold River Marden River Mardle River Maun River Mease River Meden River Medlock River Medway River Meese River Meon River Mersey River Mimram River Mint River Misbourne River Mole River Nadder River Nar River Neet River Nene River Nene (Old Course)River Nidd River North Lew River North Tyne River Ock River Og River Okement River Onny River Ore River Otter River Ottery River Ouse River Ouzel River Pang River Pant River Parrett River Penk River Perry River Petteril River Piddle River Pinn River Plym River Pol River Pont River Pool River Poulter River Quaggy River Quin River Rase River Ravensbourne River Rawthey River Ray River Rea River Red River Rede River Rhee River Rib River Ribble River Riccal River Roch River Roden River Roding River Rom River Rothay River Rother River Ryburn River Rye River Ryton River Salwarpe River Seaton River Sence River Seven River Severn River Shalbourne River Sheaf River Sheppey River Sherbourne River Sid River Skell River Skerne River Skirfare River Slea River Smite River Snail River Soar River South Tyne River Sow River Sowe River Sowy River Sprint River Steeping River Stennack River Stert River Stiffkey River Stort River Stour River Strat River Strine River Swale River Swarbourne River Swift River Swilgate River Tale River Tamar River Tame River Tanat River Tas River Tavy River Taw River Team River Tean River Tees River Teign River Teise River Teme River Tern River Test River Tham River Thame River Thames River Thet River Thrushel River Thurne River Tiddy River Tiffey River Till River Tillingbourne River Tone River Torridge River Tove River Trent River Trym River Tud River Tutt River Tweed River Twyver River Tyne River Uck River Umber River Ure River Valency River Ver River Waldon River Walkham River Wallington River Wandle River Wansbeck River Waring River Waveney River Wear River Weaver River Welland River Wenning River Wensum River Went River West Allen River Wey River Wharfe River Wheelock River Whitewater River Whitting River Whittle River Wid River Win River Windrush River Winterbourne River Wiske River Wissey River Witham River Wolf River Worfe River Worth River Wreake River Wriggle River Wye River Wylye River Wyre River Yare River Yarrow River Yarty River Yealm River Yeo River Yox Roall Dyke Roam Drain Roe Beck Rolleston Brook Rookhope Burn Rother Washlands Rothley Brook Royal Military Canal Rudhall Brook Ruskington Beck Sabden Brook Salfords Stream Salmon Brook Salt Haven Saltmoor Main Drain Sandon Brook Sandy Brook Sandyford Brook Sankey Brook Saredon Brook Scurf Dyke Sea Cut Seacourt Stream Selby Dam Semington Brook Setting Dyke Shakerley Brook Shaw Brook Tributary Sherston Avon Shill Brook Shreen Water Shutterton Brook Shuttle Tributary Cray Sileby Brook Silk Stream Silsden Beck Sincil Dyke Sinderland Brook Skeffling Drain Skirting Beck Slad Brook Small River Lee Smallhope Burn Smestow Brook Snaith Ings Snaizeholme Beck Somborne Stream Somerset Frome Sor Brook Sour Beck South Brook South Cave Beck South Cornwall Coast South Devon Coast South Forty Foot Drain South Marston Brook Southcourt Brook Spadesbourne Brook Spen Beck Spixworth Beck Spratford Stream Spring Brook St Austell River St Blazey Stream St James Stream St Johns Beck St Neot River Stainfield Beck Stansted Brook Stevenage Brook Stock Beck Stock Ghyll Stocksfield Burn Stonham Watercourse Stour Brook Sud Brook Suffolk Coast Sulham Brook Sutton Beck Sutton Mill Brook Swalecliffe Brook Swan Brook Swavesey Drain Swill Brook Swinney Beck Syd Brook Sydling Water Tadburn Lake Tang Hall Beck Tanners Brook Tetbury Avon Thacka Beck Thames Tideway The Beck The Cut The Fleet The Gissage The Moss The Porter River The Roxbourne The Sluice The Yarl Theobalds Brook Thirlmere Reservoir Thorngumbald Drain Thornton Beck Thorpe Astley Brook Tide Tirle Brook Tory Brook Tottle Brook Town Beck Trawden Brook Tresillian River Trout Beck Turkey Brook Twin Uddens Water Ulley Brook Ullswater Umborne Brook Usway Burn Valley Brook Waithe Beck Walkford Brook Waller Hill Beck Wallop Brook Walsden Water Waren Burn Warleggan River Wash Brook Wash Dike Washford River Washpit Brook Wealdstone Brook Weedon Beck Weighton Lock Wellow Brook Wendlebury Brook Wendling Beck Wendover Springs Wesley Brook West Bank Pond West Beck West Brook West Clough West Dart River West Fen Catchwater Drain West Glen River West Lyn River West Moor Drain West Okement River West Sedgemoor Drain West Wilder Brook Western Drain Western Yar Westleigh Brook Whaddon Brook Wheelan Dyke Whetstone Brook Whiston Brook White Water Dyke Whitewell Brook Whitley Beck Whitley Brook Whittle Brook Willow Beck Willow Brook Wincham Brook Windermere Windle Brook Winestead Drain Winford Brook Winterbourne Stream Witcombe Bottom Main Drain Withy Brook Withycombe Brook Wiza Beck Wolston Brook Wood Brook Woodborough Brook Woodbridge Brook Wool Brook Wooler Water Wootton Brook Worsley Brook Wortley Beck Wotton Brook Wraysbury River Wydon Burn Wyke Beck Wymans Brook Wyre River Yazor Brook Yeading Brook Yeading Brook (Eastern Arm)Yeolands Stream

Flood Insurance Information

Unknown has 0 designated flood areas. Understanding your flood risk can help you find the right insurance cover and take steps to protect your property.

Flood Insurance Guide →Planning & Flood Risk →

Nearby Counties

Barnsley