Hertfordshire and North London · Environment Agency surveys
What fish are in the Lee (Hertfordshire and North London)?
Monitoring has recorded 48 species across 38 surveyed sites on this water, between 1978 and 2026. These are survey records with dates. They do not establish what is present today, that the water is fishable, or that you have permission to fish it.
Recorded species
What monitoring has found here
Ordered by how many sites on this water recorded the species. A species not listed has not been recorded by these surveys — which is not the same as being absent.
- RoachRutilus rutilus30 siteslatest 9 Jun 2026
- ChubLeuciscus cephalus26 siteslatest 9 Jun 2026
- GudgeonGobio gobio25 siteslatest 9 Jun 2026
- PerchPerca fluviatilis24 siteslatest 9 Jun 2026
- DaceLeuciscus leuciscus22 siteslatest 9 Jun 2026
- BarbelBarbus barbus19 siteslatest 9 Jun 2026
- PikeEsox lucius16 siteslatest 11 Sept 2025
- MinnowPhoxinus phoxinus15 siteslatest 9 Jun 2026
- Common breamAbramis brama14 siteslatest 11 Sept 2025
- Pike varietiesEsox lucius14 siteslatest 23 Jun 2011
- BleakAlburnus alburnus13 siteslatest 11 Sept 2025
- Common [wild] carpCyprinus carpio11 siteslatest 18 Jun 2024
- European eelAnguilla anguilla11 siteslatest 2 Jun 2015
- TenchTinca tinca11 siteslatest 15 Jul 2025
- 3-spined sticklebackGasterosteus aculeatus10 siteslatest 3 Jul 2025
- BullheadCottus gobio9 siteslatest 11 Sept 2025
- Stone loachBarbatula barbatula9 siteslatest 9 Jun 2026
- Common carp varietiesCyprinus carpio8 siteslatest 3 Jul 2025
- European eels > elversAnguilla anguilla8 siteslatest 11 Sept 2025
- Tench varietiesTinca tinca8 siteslatest 22 Aug 2011
- Brown / sea troutSalmo trutta7 siteslatest 31 Jul 2025
- Mirror carpCyprinus carpio5 siteslatest 22 Mar 2012
- Crucian carpCarassius carassius4 siteslatest 14 Feb 2017
- GraylingThymallus thymallus4 siteslatest 31 Jul 2025
- RuddScardinius erythrophthalmus4 siteslatest 31 Jul 2025
- Rudd varietiesScardinius erythrophthalmus4 siteslatest 8 Jul 2009
- RuffeGymnocephalus cernuus4 siteslatest 27 Jul 2022
- 10-spined sticklebackPungitius pungitius3 siteslatest 9 Aug 2007
- Brook lamprey > ammocoeteLampetra planeri3 siteslatest 7 Aug 2007
- Roach x common bream hybridRutilus rutilus x Abramis brama3 siteslatest 23 Aug 2016
- Brook lampreyLampetra planeri2 siteslatest 29 Jul 2025
- Roach x dace hybridRutilus rutilus x Leuciscus leuciscus2 siteslatest 10 Jul 2018
- Silver breamAbramis bjoerkna2 siteslatest 25 Aug 2010
- Bleak x roach hybridAlburnus alburnus x Rutilus rutilus1 sitelatest 13 Aug 2009
- Brook lamprey ammocoetesLampetra planeri1 sitelatest 22 Sept 2004
- Common gobyPomatoschistus microps1 sitelatest 29 Sept 2004
- European elversAnguilla anguilla1 sitelatest 11 Sept 2025
- Feral [brown] goldfishCarassius auratus1 sitelatest 3 Aug 2022
- FlounderPlatichthys flesus1 sitelatest 17 Aug 2023
- Ghost carpCyprinus carpio1 sitelatest 9 Aug 2006
- Goby sp.Gobiidae1 sitelatest 5 Sept 2007
- Koi carpCyprinus carpio1 sitelatest 7 Jul 2016
- Lamprey sp.Petromyzontidae1 sitelatest 15 Jul 2009
- Lamprey sp. > ammocoetePetromyzontidae1 sitelatest 27 Jul 2022
- Rainbow troutOncorhynchus mykiss1 sitelatest 25 Jun 2024
- Roach x chub hybridRutilus rutilus x Leuciscus cephalus1 sitelatest 22 Aug 2011
- Roach x rudd hybridRutilus rutilus x Scardinius erythrophthalmus1 sitelatest 15 Sept 2004
- Sea bassDicentrarchus labrax1 sitelatest 29 Sept 2004
Surveyed sites on this water
38 shown, newest survey first
Wheathampstead
- Survey events
- 21
- Observed taxa
- 15
- Latest survey
- 9 Jun 2026
Hackney Marshes
- Survey events
- 15
- Observed taxa
- 31
- Latest survey
- 11 Sept 2025
Waterdale
- Survey events
- 14
- Observed taxa
- 19
- Latest survey
- 31 Jul 2025
Fishers Green
- Survey events
- 20
- Observed taxa
- 22
- Latest survey
- 29 Jul 2025
Red Spinners Bayford
- Survey events
- 5
- Observed taxa
- 6
- Latest survey
- 17 Jul 2025
Amwell Loop
- Survey events
- 21
- Observed taxa
- 24
- Latest survey
- 15 Jul 2025
Stanborough Park
- Survey events
- 13
- Observed taxa
- 15
- Latest survey
- 24 Jun 2025
Hyde Mill
- Survey events
- 14
- Observed taxa
- 17
- Latest survey
- 17 Jun 2025
Woolmers Park
- Survey events
- 11
- Observed taxa
- 18
- Latest survey
- 3 Aug 2023
Fallowfield
- Survey events
- 2
- Observed taxa
- 1
- Latest survey
- 16 Sept 2021
Hartham Leisure centre
- Survey events
- 1
- Observed taxa
- 9
- Latest survey
- 24 Jun 2019
Hartham Common
- Survey events
- 15
- Observed taxa
- 20
- Latest survey
- 21 Jun 2018
Hartham Common Weir
- Survey events
- 1
- Observed taxa
- 5
- Latest survey
- 21 Jun 2018
Fishers Green barbel investigation
- Survey events
- 1
- Observed taxa
- 7
- Latest survey
- 3 Nov 2017
Bayford Pond Waterhall
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 14 Feb 2017
Powder Mill Cut
- Survey events
- 6
- Observed taxa
- 11
- Latest survey
- 27 Jul 2015
Kings Weir
- Survey events
- 2
- Observed taxa
- 12
- Latest survey
- 2 Jun 2015
Kings Weir - Weirpool
- Survey events
- 1
- Observed taxa
- 4
- Latest survey
- 2 Jun 2015
Batford
- Survey events
- 2
- Observed taxa
- 5
- Latest survey
- 19 Jun 2014
Kings Weir Back Loop
- Survey events
- 2
- Observed taxa
- 11
- Latest survey
- 29 May 2014
Limbry Park
- Survey events
- 2
- Observed taxa
- 2
- Latest survey
- 8 May 2014
Essendon
- Survey events
- 9
- Observed taxa
- 16
- Latest survey
- 26 Jun 2013
County Hall
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 22 Mar 2012
Flour Mills Loop
- Survey events
- 6
- Observed taxa
- 12
- Latest survey
- 1 Jul 2009
Waterend
- Survey events
- 2
- Observed taxa
- 6
- Latest survey
- 17 Apr 2008
Bush hall
- Survey events
- 1
- Observed taxa
- 8
- Latest survey
- 27 Nov 2007
Bayford
- Survey events
- 4
- Observed taxa
- 12
- Latest survey
- 27 Oct 2006
Leasey Bridge - Batford Wier
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 25 Oct 2006
Vauxhall Leisure Centre
- Survey events
- 1
- Observed taxa
- 2
- Latest survey
- 6 Jun 2006
Gilwell Park Lake
- Survey events
- 1
- Observed taxa
- 2
- Latest survey
- 3 May 2005
Hertford County Hall AS
- Survey events
- 1
- Observed taxa
- 7
- Latest survey
- 28 Nov 2003
Walthamstow Resevoirs
- Survey events
- 1
- Observed taxa
- 5
- Latest survey
- 2 Mar 1993
River Lynch
- Survey events
- 1
- Observed taxa
- 6
- Latest survey
- 13 Oct 1992
Manifold Ditch
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 6 Oct 1992
Hertford Football Ground
- Survey events
- 1
- Observed taxa
- 7
- Latest survey
- 29 Mar 1978
Water Hall Farm
- Survey events
- 1
- Observed taxa
- 6
- Latest survey
- 22 Mar 1978
D/S Cecil Saw Mills
- Survey events
- 1
- Observed taxa
- 11
- Latest survey
- 15 Mar 1978
East Hyde D/S sewage treatment works
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 22 Feb 1978
Provenance
Source and licence
- SourceEnvironment Agency Ecology & Fish Data
- LicenceOpen Government Licence v3.0
- Source copy retrieved23 Jul 2026
- Waterbody nameAs published by the Environment Agency
- Not assertedCurrent presence, access, permission, fishing quality or safety