ARAnglerRadar evidence & rules

Compare river fishing evidence · England

Same facts.
No winner score.

Choose two named waters and compare the evidence that actually exists. Survey effort, species records and freshness are shown separately because none proves access, current presence or fishing quality.

Hertfordshire and North London

Lee (Hertfordshire and North London)

Survey sites
38
Survey events
204
Recorded taxa
48
Evidence period
22 Feb 1978 – 9 Jun 2026
Sites latest within 2 years
8
Sites latest over 10 years ago
23
EA waterbody IDs
GB106038027960 · GB106038033200 · GB106038033230 · GB106038033240 · +5 more
Access status
Not established by survey data
Thames

River Kennet

Survey sites
56
Survey events
264
Recorded taxa
31
Evidence period
28 Sept 1999 – 14 Oct 2025
Sites latest within 2 years
16
Sites latest over 10 years ago
31
EA waterbody IDs
GB106039017420 · GB106039023120 · GB106039023140 · GB106039023172
Access status
Not established by survey data

Overlap

29 recorded taxa appear in both survey sets

The site counts are shown per water. A higher count can reflect more monitoring sites, not a larger or healthier population.

  1. ChubLee (Hertfordshire and North London) 26River Kennet 41Latest evidence 9 Jun 2026 · 9 Oct 2025
  2. RoachLee (Hertfordshire and North London) 30River Kennet 36Latest evidence 9 Jun 2026 · 8 Oct 2025
  3. DaceLee (Hertfordshire and North London) 22River Kennet 41Latest evidence 9 Jun 2026 · 9 Oct 2025
  4. PikeLee (Hertfordshire and North London) 16River Kennet 47Latest evidence 11 Sept 2025 · 9 Oct 2025
  5. PerchLee (Hertfordshire and North London) 24River Kennet 38Latest evidence 9 Jun 2026 · 9 Oct 2025
  6. GudgeonLee (Hertfordshire and North London) 25River Kennet 31Latest evidence 9 Jun 2026 · 1 Oct 2025
  7. Brown / sea troutLee (Hertfordshire and North London) 7River Kennet 47Latest evidence 31 Jul 2025 · 14 Oct 2025
  8. BarbelLee (Hertfordshire and North London) 19River Kennet 22Latest evidence 9 Jun 2026 · 25 Sept 2025
  9. BleakLee (Hertfordshire and North London) 13River Kennet 27Latest evidence 11 Sept 2025 · 25 Sept 2025
  10. Common breamLee (Hertfordshire and North London) 14River Kennet 19Latest evidence 11 Sept 2025 · 25 Sept 2025
  11. MinnowLee (Hertfordshire and North London) 15River Kennet 11Latest evidence 9 Jun 2026 · 14 Oct 2025
  12. GraylingLee (Hertfordshire and North London) 4River Kennet 21Latest evidence 31 Jul 2025 · 9 Oct 2025
  13. TenchLee (Hertfordshire and North London) 11River Kennet 13Latest evidence 15 Jul 2025 · 13 Nov 2024
  14. European eelLee (Hertfordshire and North London) 11River Kennet 9Latest evidence 2 Jun 2015 · 8 Nov 2013
  15. BullheadLee (Hertfordshire and North London) 9River Kennet 11Latest evidence 11 Sept 2025 · 14 Oct 2025
  16. Pike varietiesLee (Hertfordshire and North London) 14River Kennet 5Latest evidence 23 Jun 2011 · 1 Oct 2025
  17. Stone loachLee (Hertfordshire and North London) 9River Kennet 8Latest evidence 9 Jun 2026 · 8 Oct 2025
  18. Common [wild] carpLee (Hertfordshire and North London) 11River Kennet 5Latest evidence 18 Jun 2024 · 24 Oct 2018
  19. Roach x common bream hybridLee (Hertfordshire and North London) 3River Kennet 12Latest evidence 23 Aug 2016 · 25 Oct 2018
  20. 3-spined sticklebackLee (Hertfordshire and North London) 10River Kennet 4Latest evidence 3 Jul 2025 · 14 Oct 2025
  21. European eels > elversLee (Hertfordshire and North London) 8River Kennet 5Latest evidence 11 Sept 2025 · 10 Oct 2025
  22. RuffeLee (Hertfordshire and North London) 4River Kennet 9Latest evidence 27 Jul 2022 · 5 Nov 2022
  23. Common carp varietiesLee (Hertfordshire and North London) 8River Kennet 3Latest evidence 3 Jul 2025 · 22 Oct 2015
  24. Mirror carpLee (Hertfordshire and North London) 5River Kennet 4Latest evidence 22 Mar 2012 · 4 Nov 2008
  25. Brook lampreyLee (Hertfordshire and North London) 2River Kennet 7Latest evidence 29 Jul 2025 · 14 Oct 2025
  26. Rainbow troutLee (Hertfordshire and North London) 1River Kennet 8Latest evidence 25 Jun 2024 · 8 Oct 2024
  27. RuddLee (Hertfordshire and North London) 4River Kennet 3Latest evidence 31 Jul 2025 · 4 Nov 2022
  28. Silver breamLee (Hertfordshire and North London) 2River Kennet 3Latest evidence 25 Aug 2010 · 4 Nov 2022
  29. Brook lamprey > ammocoeteLee (Hertfordshire and North London) 3River Kennet 1Latest evidence 7 Aug 2007 · 6 Oct 2023

Only in the Lee (Hertfordshire and North London) survey set

  1. Tench varieties8 sites · latest 22 Aug 2011
  2. Crucian carp4 sites · latest 14 Feb 2017
  3. Rudd varieties4 sites · latest 8 Jul 2009
  4. 10-spined stickleback3 sites · latest 9 Aug 2007
  5. Roach x dace hybrid2 sites · latest 10 Jul 2018
  6. Bleak x roach hybrid1 site · latest 13 Aug 2009
  7. Brook lamprey ammocoetes1 site · latest 22 Sept 2004
  8. Common goby1 site · latest 29 Sept 2004
  9. European elvers1 site · latest 11 Sept 2025
  10. Feral [brown] goldfish1 site · latest 3 Aug 2022
  11. Flounder1 site · latest 17 Aug 2023
  12. Ghost carp1 site · latest 9 Aug 2006
  13. Goby sp.1 site · latest 5 Sept 2007
  14. Koi carp1 site · latest 7 Jul 2016
  15. Lamprey sp.1 site · latest 15 Jul 2009
  16. Lamprey sp. > ammocoete1 site · latest 27 Jul 2022
  17. Roach x chub hybrid1 site · latest 22 Aug 2011
  18. Roach x rudd hybrid1 site · latest 15 Sept 2004
  19. Sea bass1 site · latest 29 Sept 2004

Only in the River Kennet survey set

  1. Atlantic salmon14 sites · latest 25 Oct 2010
  2. Golden goldfish1 site · latest 12 Nov 2009

Method and boundary

Comparison, not prediction.

  • SourceEnvironment Agency Ecology & Fish Data
  • LicenceOpen Government Licence v3.0
  • Source copy retrieved23 Jul 2026
  • CoordinatesNot published on this page
  • Not assertedAccess, current presence, abundance, catch prospects or safety
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