Name Confluence Average discharge (m³/s)[1] Source Length Tributaries Catchment Notes Ebbsfleet River Northfleet 51°27′01″N 0°19′47″E / 51.4503°N 0.3296°E / 51.4503; 0.3296 (Northfleet ) Springhead , just S. of the A2 road at Southfleet 2.4 miles (3.9 km) Approx. 10 miles due west of London Stone at grid reference TQ860786 Mardyke Purfleet 51°29′08″N 0°13′40″E / 51.4856°N 0.2278°E / 51.4856; 0.2278 (Mardyke ) 0.48 Holden's Wood between Great Warley and Little Warley [2] 11 miles (18 km) 35 square miles (91 km2 ) Darent River Darent Dartford 51°28′49″N 0°13′03″E / 51.4802°N 0.2176°E / 51.4802; 0.2176 (River Darent ) 0.72 Westerham 21 miles (34 km) River Cray 154 square miles (400 km2 )[3] Tidal reach: Dartford Creek Ingrebourne River Ingrebourne or Ingrebourne Rainham, London 51°30′27″N 0°10′24″E / 51.5075°N 0.1733°E / 51.5075; 0.1733 (River Ingrebourne ) 0.33 Brentwood 27 miles (43 km) Tidal reach: Rainham Creek Beam River Beam and/or Rom and Bourne Brook Dagenham 51°30′42″N 0°09′31″E / 51.5118°N 0.1587°E / 51.5118; 0.1587 (River Beam ) 0.34 Stapleford Abbotts Golf Club, Watton's Green 13 miles (21 km) The Ravensbourne Rom upstream of inflow of Ravensbourne Roding River Roding Creekmouth 51°30′52″N 0°05′55″E / 51.5145°N 0.0987°E / 51.5145; 0.0987 (River Roding ) 1.85 Molehill Green, near Dunmow 31 miles (50 km)[4] Cripsey Brook Cran BrookAlders Brook Seven Kings Water Mayes Brook 132 square miles (340 km2 )[5] tidal reach: Barking Creek Lea00 River Lea Leamouth 51°30′26″N 0°00′33″E / 51.5071°N 0.0092°E / 51.5071; 0.0092 (River Lea ) 5.48 Leagrave 42 miles (68 km) The Hackney Brook River Moselle Pymmes Brook River Ching Turkey Brook River Stort River Beane River Mimram 550 square miles (1,400 km2 )[5] tidal reach: Bow Creek Ravensbourne River Ravensbourne or Ravensbourne Deptford 51°29′01″N 0°01′07″W / 51.4835°N 0.0185°W / 51.4835; -0.0185 (River Ravensbourne ) 0.43 Keston 11 miles (18 km) Spring Brook River Pool River Quaggy 69 square miles (180 km2 ) tidal reach: Deptford Creek Neckinger River Neckinger or the Neckinger Channel Shad Thames 51°30′09″N 0°04′15″W / 51.5024°N 0.0708°W / 51.5024; -0.0708 (River Neckinger ) north Southwark 0.8 miles (1.3 km) (about; longer old catchment drains to other surface and combined water conduits) mainly diverted to surface and combined sewer drains Wal River Walbrook or Walbrook Walbrook Wharf, just west of Cannon Street railway station .51°30′34″N 0°05′34″W / 51.5094°N 0.0928°W / 51.5094; -0.0928 (River Walbrook ) north walls of City of London (trad. ) 0 miles (0 km) diverted to surface and combined sewer drains Fleet River Fleet or Fleet stream Bazelgette's Mid and Lower Northern Interceptor Sewers (previously a stream/field ditch ending at Blackfriars, London )51°30′39″N 0°06′17″W / 51.5108°N 0.1048°W / 51.5108; -0.1048 (River Fleet ) Hampstead Heath 1 mile (1.6 km) (as to connecting lengths of ponds) Lamb's Conduit , Fagswell Brook diverted to surface and combined sewer drains . Was also known as the Holbourne/Holborn Effra River Effra Vauxhall 51°29′14″N 0°07′33″W / 51.4873°N 0.1258°W / 51.4873; -0.1258 (River Effra ) west and east limits of Gypsy Hill , London 0 miles (0 km) diverted to surface and combined sewer drains Tyburn River Tyburn , the Tyburn or the Ty Bourne north and south of Vauxhall Bridge , and small forked mouth around Horseguards Avenue, Westminster (4 mouths)51°29′17″N 0°07′43″W / 51.4880°N 0.1287°W / 51.4880; -0.1287 (Tyburn ) South Hampstead 0 miles (0 km) diverted to surface and combined sewer drains Falconbrook Battersea 51°28′05″N 0°10′51″W / 51.4680°N 0.1808°W / 51.4680; -0.1808 (Falconbrook ) Tooting Graveney Common , Tooting and east end of Poynder's Road, Clapham[6] [7] 0 miles (0 km) diverted to surface and combined sewer drains Westbourne River Westbourne Chelsea 51°29′06″N 0°09′13″W / 51.4850°N 0.1537°W / 51.4850; -0.1537 (River Westbourne ) Grange Gardens, Hampstead, West Hampstead and two sources in east Willesden (today's Brondesbury Park ) 0 miles (0 km) Tyburn Brook diverted to surface and combined sewer drains Counter's Creek west Chelsea /east Fulham51°28′40″N 0°10′46″W / 51.4778°N 0.1794°W / 51.4778; -0.1794 (Counter's Creek ) Kensal Green 0 miles (0 km) diverted to surface and combined sewer drains Wandle River Wandle Wandsworth 51°27′46″N 0°11′43″W / 51.4629°N 0.1952°W / 51.4629; -0.1952 (River Wandle ) 1.7 Waddon 9 miles (14 km) River Graveney 78 square miles (200 km2 )[5] Beverley Brook Putney 51°28′18″N 0°13′22″W / 51.4718°N 0.2229°W / 51.4718; -0.2229 (Beverley Brook ) Worcester Park 9 miles (14 km)[5] Pyl Brook 25 square miles (65 km2 )[5] Stamford Brook Hammersmith 51°29′25″N 0°14′03″W / 51.4903°N 0.2341°W / 51.4903; -0.2341 (Stamford Brook ) Acton 0 miles (0 km) diverted to surface and combined sewer drains – old tidal mouth: Hammersmith Creek Bollo or Bollar Brook Chiswick 51°28′46″N 0°15′04″W / 51.4794°N 0.2512°W / 51.4794; -0.2512 (Bollo Brook ) Acton 0 miles (0 km) diverted to surface and combined sewer drains Brent River Brent Brentford 51°28′59″N 0°18′00″W / 51.4830°N 0.3000°W / 51.4830; -0.3000 (River Brent ) 1.32 Barnet 18 miles (29 km) Dollis Brook Folly Brook Mutton Brook 58 square miles (150 km2 )[5] Duke of Northumberland's River (west) and (east) Isleworth 51°28′13″N 0°19′16″W / 51.4704°N 0.3212°W / 51.4704; -0.3212 (Duke of Northumberland's River ) River Crane & River Colne 9.3 miles (15.0 km) (includes eastern 2.5 miles) Artificial distributary of the Colne and Crane Crane River Crane Isleworth 51°27′55″N 0°19′17″W / 51.4654°N 0.3215°W / 51.4654; -0.3215 (River Crane ) 0.54 Hayes, Hillingdon 9 miles (14 km) Yeading Brook 42 square miles (110 km2 )[5] Sudbrook Petersham 51°26′55″N 0°18′21″W / 51.4487°N 0.3058°W / 51.4487; -0.3058 (Sudbrook (stream) ) Dann's Pond, Richmond Park 2 miles (3.2 km) Latchmere Stream culverted Hogsmill River Kingston upon Thames 51°24′33″N 0°18′31″W / 51.4093°N 0.3085°W / 51.4093; -0.3085 (Hogsmill River ) 0.98 Ewell 6 miles (9.7 km) Bonesgate Stream 28 square miles (73 km2 ) Rythe The Rythe Thames Ditton 51°23′28″N 0°19′34″W / 51.3911°N 0.3260°W / 51.3911; -0.3260 (The Rythe ) north Oxshott 4.2 miles (6.8 km) Mole River Mole Molesey 51°24′04″N 0°20′21″W / 51.4012°N 0.3393°W / 51.4012; -0.3393 (River Mole ) 5.43 Rusper 50 miles (80 km) Ifield BrookGatwick Stream Earlswood Brook Pipp Brook The Rye 198 square miles (510 km2 ) Longford River Hampton Court Palace 51°24′05″N 0°20′18″W / 51.4013°N 0.3383°W / 51.4013; -0.3383 (Longford River ) River Colne 12 miles (19 km) Artificial distributary of the Colne Ash River Ash southwest corner of Sunbury-on-Thames 51°23′52″N 0°25′02″W / 51.3977°N 0.4173°W / 51.3977; -0.4173 (River Ash ) River Colne 6.2 miles (10.0 km)[8] Distributary of the Colne Wey River Wey (and Caker Stream) Weybridge 51°22′49″N 0°27′25″W / 51.3804°N 0.4570°W / 51.3804; -0.4570 (River Wey ) 6.95 Hartley Mauditt and Upper Farringdon, Hampshire (main, north or west branch); parishes of Fernhurst /Lurgashall in South Downs National Park (south branch) 53 miles (85 km) River Ock, Surrey Cranleigh Waters River Tillingbourne Hoe Stream (fed by the Hodge Brook and Stanford Brook) Of south branch: River Slea, Hampshire Dead Water Cooper's Stream 350 square miles (910 km2 ) Source of south branch about 52 miles to/from mouth. Bourne River Bourne, Chertsey Weybridge 51°22′43″N 0°27′50″W / 51.3785°N 0.4638°W / 51.3785; -0.4638 (River Bourne ) Windsor Great Park , Ascot and Swinley Forest 13.2 miles (21.2 km) River Bourne, Addlestone Colne River Colne Staines 51°25′58″N 0°30′55″W / 51.4329°N 0.5152°W / 51.4329; -0.5152 (River Colne ) 4.05 (before all distributaries) North Mymms 36 miles (58 km) River Pinn River Misbourne River Chess River Gade River Ver Colne Brook Hythe End , Wraysbury51°26′16″N 0°32′07″W / 51.4379°N 0.5352°W / 51.4379; -0.5352 (Colne Brook ) River Colne 9.2 miles (14.8 km) Distributary of the Colne Cut The Cut Bray 51°29′57″N 0°40′53″W / 51.4991°N 0.6815°W / 51.4991; -0.6815 (The Cut ) North Ascot 14 miles (23 km) Bull Brook , The Bourne Wye River Wye Bourne End 51°34′13″N 0°42′40″W / 51.5704°N 0.7111°W / 51.5704; -0.7111 (River Wye ) 1.00 West Wycombe 51°38′52″N 0°48′45″W / 51.647802°N 0.812522°W / 51.647802; -0.812522 (River Wye ) 8.7 miles (14.0 km) Hughenden Stream In wet years this river is additionally sourced by an aquifer further up the same valley, extending the river by another mile in length. Hamble Brook Hambleden Marina51°33′31″N 0°52′10″W / 51.5585°N 00.8695°W / 51.5585; -00.8695 (Hamble Brook ) Sourced by an aquifer in the Hambleden Valley, occasionally dry. Loddon River Loddon Wargrave 51°30′06″N 0°52′48″W / 51.5017°N 0.8800°W / 51.5017; -0.8800 (River Loddon ) 2.16 Basingstoke 28 miles (45 km) St Patrick's Stream River Broadwater Emm Brook River Blackwater 400 square miles (1,000 km2 ) Berry Brook Berry Brook Hallsmead Ait , near Shiplake 51°29′29″N 0°53′43″W / 51.4913°N 0.8953°W / 51.4913; -0.8953 (Berry Brook ) street (Surface Water) drains of South View Avenue, Caversham 4 miles (6.4 km) Kennet River Kennet Reading 51°27′32″N 0°56′58″W / 51.4590°N 0.9495°W / 51.4590; -0.9495 (River Kennet ) 9.75 Swallowhead spring and others near Silbury Hill 45 miles (72 km) Foudry Brook Clayhill Brook River Enborne River Lambourn River Dun River Og 450 square miles (1,200 km2 )[9] Pang River Pang Pangbourne 51°29′09″N 1°05′17″W / 51.4858°N 1.0880°W / 51.4858; -1.0880 (River Pang ) 0.62 Compton 14 miles (23 km) River Bourne, Berkshire River Roden 66 square miles (170 km2 )[10] Thame River Thame Dorchester 51°38′05″N 1°09′58″W / 51.6348°N 1.1660°W / 51.6348; -1.1660 (River Thame ) 3.90 Rowsham / Cheddington , Vale of Aylesbury 40 miles (64 km) 310 square miles (800 km2 )[11] Ock River Ock Abingdon 51°39′59″N 1°17′02″W / 51.6665°N 1.2838°W / 51.6665; -1.2838 (River Ock ) 1.52 Cock Well, Little Coxwell 21 miles (34 km) Holywell Brook (rising in same parish) Stutfield Brook Cherwell River Cherwell Oxford 51°44′32″N 1°14′54″W / 51.7421°N 1.2483°W / 51.7421; -1.2483 (River Cherwell ) 7.2 Hellidon 40 miles (64 km) River Ray River Swere 364 square miles (940 km2 )[12] Evenlode River Evenlode Above King's Lock 51°47′06″N 1°20′16″W / 51.7849°N 1.3378°W / 51.7849; -1.3378 (River Evenlode ) 3.7 Moreton-in-Marsh , Oxfordshire 10 miles (16 km) River Glyme Rollright Brook Windrush River Windrush Newbridge 51°42′36″N 1°25′02″W / 51.7100°N 1.4173°W / 51.7100; -1.4173 (River Windrush ) 3.27 Taddington, Gloucestershire 40 miles (64 km) River Dikler River Eye, Gloucestershire 140 square miles (360 km2 )[13] Cole River Cole Above Buscot Lock 51°41′19″N 1°40′38″W / 51.6887°N 1.6772°W / 51.6887; -1.6772 (River Cole ) 1.20 Burderop Park, Hodson, Wiltshire 17 miles (27 km) Dorcan Stream (has subsumed original Cole sources) Pennyhooks Brook Leach River Leach Lechlade 51°41′21″N 1°40′38″W / 51.6891°N 1.6772°W / 51.6891; -1.6772 (River Leach ) 0.75 Hampnett , Gloucestershire 18 miles (29 km) Coln00 River Coln Lechlade 51°41′17″N 1°42′19″W / 51.6881°N 1.7052°W / 51.6881; -1.7052 (River Coln ) 2.06 Brockhampton, Gloucestershire 30 miles (48 km) Ray River Ray, Wiltshire Cricklade 51°38′39″N 1°49′31″W / 51.6442°N 1.8252°W / 51.6442; -1.8252 (River Ray ) 1.28 Markham Hill, Wroughton , Wiltshire 12 miles (19 km) Key River Key Cricklade 51°38′33″N 1°50′46″W / 51.6424°N 1.8461°W / 51.6424; -1.8461 (River Key ) West of Battle Lake, Braydon 6.5 miles (10.5 km) Churn River Churn Cricklade 51°38′42″N 1°51′12″W / 51.6450°N 1.8533°W / 51.6450; -1.8533 (River Churn ) 0.86 Seven Springs, Gloucestershire 16 miles (26 km)