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

Beam

Survey sites
4
Survey events
14
Recorded taxa
20
Evidence period
9 Mar 1996 – 26 Oct 2018
Sites latest within 2 years
0
Sites latest over 10 years ago
1
EA waterbody IDs
GB106037028100
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

15 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. ChubBeam 1River Kennet 41Latest evidence 14 May 1996 · 9 Oct 2025
  2. DaceBeam 1River Kennet 41Latest evidence 14 May 1996 · 9 Oct 2025
  3. PerchBeam 3River Kennet 38Latest evidence 27 Jun 2018 · 9 Oct 2025
  4. RoachBeam 3River Kennet 36Latest evidence 26 Oct 2018 · 8 Oct 2025
  5. GudgeonBeam 3River Kennet 31Latest evidence 27 Jun 2018 · 1 Oct 2025
  6. Common breamBeam 2River Kennet 19Latest evidence 15 Oct 2013 · 25 Sept 2025
  7. TenchBeam 2River Kennet 13Latest evidence 8 Jun 2000 · 13 Nov 2024
  8. Roach x common bream hybridBeam 1River Kennet 12Latest evidence 9 Mar 1996 · 25 Oct 2018
  9. European eelBeam 3River Kennet 9Latest evidence 1 Nov 2005 · 8 Nov 2013
  10. Common [wild] carpBeam 2River Kennet 5Latest evidence 26 Oct 2018 · 24 Oct 2018
  11. European eels > elversBeam 2River Kennet 5Latest evidence 26 Oct 2018 · 10 Oct 2025
  12. RuddBeam 3River Kennet 3Latest evidence 17 May 2012 · 4 Nov 2022
  13. 3-spined sticklebackBeam 2River Kennet 4Latest evidence 15 Oct 2013 · 14 Oct 2025
  14. Mirror carpBeam 1River Kennet 4Latest evidence 15 Oct 2013 · 4 Nov 2008
  15. Common carp varietiesBeam 1River Kennet 3Latest evidence 9 Mar 1996 · 22 Oct 2015

Only in the Beam survey set

  1. 10-spined stickleback1 site · latest 23 May 1996
  2. Crucian carp1 site · latest 23 May 1996
  3. Feral [brown] goldfish1 site · latest 28 Oct 2005
  4. Goldfish varieties1 site · latest 8 Jun 2000
  5. Tench varieties1 site · latest 9 Mar 1996

Only in the River Kennet survey set

  1. Brown / sea trout47 sites · latest 14 Oct 2025
  2. Pike47 sites · latest 9 Oct 2025
  3. Bleak27 sites · latest 25 Sept 2025
  4. Barbel22 sites · latest 25 Sept 2025
  5. Grayling21 sites · latest 9 Oct 2025
  6. Atlantic salmon14 sites · latest 25 Oct 2010
  7. Bullhead11 sites · latest 14 Oct 2025
  8. Minnow11 sites · latest 14 Oct 2025
  9. Ruffe9 sites · latest 5 Nov 2022
  10. Rainbow trout8 sites · latest 8 Oct 2024
  11. Stone loach8 sites · latest 8 Oct 2025
  12. Brook lamprey7 sites · latest 14 Oct 2025
  13. Pike varieties5 sites · latest 1 Oct 2025
  14. Silver bream3 sites · latest 4 Nov 2022
  15. Brook lamprey > ammocoete1 site · latest 6 Oct 2023
  16. 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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