Cobbins Brook at Waltham AbbeyColne Brook at ColnbrookColne Brook at IverColne Brook at Iver and ColnbrookCripsey Brook at Chipping OngarCripsey Brook at MoretonCripsey Brook in Epping Forest District CouncilDane End tributary at Dane EndDollis Brook from Barnet to HendonEdgware Brook at StanmoreFluvial River CraneGroundwater flooding in CheshamLower Lee tributariesLower River Colne and Frays RiverLower River Lee at EnfieldLower River Lee at Hackney and WalthamstowLower River Lee from Hoddesdon to Canning TownLower River RodingMiddle River ColneMimmshall BrookMimmshall Brook at Warrengate RoadNazeing Brook at Lower NazeingPincey Brook from Takeley to HarlowPincey Brook near SheeringPymmes Brook at East BarnetPymmes Brook at Upper Edmonton and TottenhamRadlett and Borehamwood Brooks at BorehamwoodRadlett Brook at RadlettRags Brook at Flamstead EndRiver Ash at Furneux PelhamRiver Ash at The HadhamsRiver Ash in HertfordshireRiver Ash in the Borough of SpelthorneRiver Beam at DagenhamRiver Beane at HertfordRiver Beane at WalkernRiver Beane catchmentRiver Brent from Hendon to BrentfordRiver Brent in the London Borough of BarnetRiver Brent in the London Borough of BrentRiver Bulbourne at BoxmoorRiver Chess at CheshamRiver Chess in the Chilterns and Three Rivers DistrictsRiver Colne and Frays River at West Drayton and Stanwell MoorRiver Colne at Colney HeathRiver Colne at London ColneyRiver Colne at WatfordRiver Colne at WillowbankRiver Crane at Cranford and FelthamRiver Crane at SouthallRiver Gade at Frogmore EndRiver Gade at Hemel HempsteadRiver Gade at Kings Langley and CroxleyRiver Ingrebourne at Harold ParkRiver Ingrebourne at Harold Park and HornchurchRiver Ingrebourne at HornchurchRiver Lee at HarpendenRiver Lee at HertfordRiver Lee at Hertford and WareRiver Lee at LutonRiver Lee at Luton, Harpenden and WheathampsteadRiver Mimram at WelwynRiver Mimram from Tewin to HertfordRiver Mimram in HertfordshireRiver MisbourneRiver Misbourne at AmershamRiver Misbourne at The ChalfontsRiver Pinn and Woodridings StreamRiver Pinn at Eastcote VillageRiver Pinn at IckenhamRiver Pinn at PinnerRiver Pinn at RuislipRiver Pinn at UxbridgeRiver Pinn at YiewsleyRiver Quin at BraughingRiver Rib at Buntingford to BarwickRiver Rib at Wadesmill to HertfordRiver Roding from Ongar to StaplefordRiver Roding in RedbridgeRiver Rom at RomfordRiver Stort and Stansted Brook catchmentRiver Stort at Clavering and ManudenRiver Stort at HarlowRiver Stort at SawbridgeworthRiver Ver at St AlbansRiver Ver in HertfordshireRivers Beam and RomRivers Gade and BulbourneRivers Rib and QuinSalmons Brook at Grange Park and Lower EdmontonSilk Stream and the Deans, Edgware, Dollis, Mutton and Wealdstone BrooksSilk Stream at Edgware and ColindaleStansted Brook at Stansted MountfitchetStevenage Brook at StevenageTidal Thames at Beckton Sewage WorksTidal Thames from the Hogarth Lane Roundabout to the River BrentTidal Thames from the Limehouse Basin to Blackfriars BridgeTidal Thames from The Mardyke to Barking CreekTidal Thames from the River Brent to the River CraneTidal Thames in the boroughs of Havering, Barking and Dagenham, and NewhamTidal Thames in the boroughs of Kensington and Chelsea, Hammersmith and Fulham, Ealing and HounslowTidal Thames in the boroughs of Tower Hamlets, City of London, City of Westminster, Ken and ChelseaTrinity Marsh Ditch at Waltham CrossTurkey Brook at EnfieldUpper River Colne and Radlett BrookUpper RodingWealdstone Brook at KentonWoodridings Stream at Pinner GreenYeading Brook at HillingdonYeading Brook East at South RuislipYeading Brook West at Ruislip ManorYeading Brooks in London Boroughs of Harrow and Hillingdon