AnglerRadar / Compare rivers 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
Survey sites 4
Survey events 8
Recorded taxa 14
Evidence period 7 Oct 2009 – 13 Oct 2010
Sites latest within 2 years 0
Sites latest over 10 years ago 4
EA waterbody IDs GB106038077851 · GB106038077852
Access status Not established by survey data Thames
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
13 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.
Pike Lower Lee Boomboat Surveys 3 River Kennet 47 Latest evidence 8 Oct 2009 · 9 Oct 2025 Perch Lower Lee Boomboat Surveys 4 River Kennet 38 Latest evidence 13 Oct 2010 · 9 Oct 2025 Roach Lower Lee Boomboat Surveys 4 River Kennet 36 Latest evidence 13 Oct 2010 · 8 Oct 2025 Gudgeon Lower Lee Boomboat Surveys 2 River Kennet 31 Latest evidence 12 Oct 2010 · 1 Oct 2025 Bleak Lower Lee Boomboat Surveys 1 River Kennet 27 Latest evidence 8 Oct 2009 · 25 Sept 2025 Common bream Lower Lee Boomboat Surveys 3 River Kennet 19 Latest evidence 12 Oct 2010 · 25 Sept 2025 Tench Lower Lee Boomboat Surveys 2 River Kennet 13 Latest evidence 8 Oct 2009 · 13 Nov 2024 Roach x common bream hybrid Lower Lee Boomboat Surveys 1 River Kennet 12 Latest evidence 12 Oct 2010 · 25 Oct 2018 European eel Lower Lee Boomboat Surveys 3 River Kennet 9 Latest evidence 13 Oct 2010 · 8 Nov 2013 Ruffe Lower Lee Boomboat Surveys 1 River Kennet 9 Latest evidence 12 Oct 2010 · 5 Nov 2022 Pike varieties Lower Lee Boomboat Surveys 1 River Kennet 5 Latest evidence 12 Oct 2010 · 1 Oct 2025 Silver bream Lower Lee Boomboat Surveys 2 River Kennet 3 Latest evidence 12 Oct 2010 · 4 Nov 2022 Common carp varieties Lower Lee Boomboat Surveys 1 River Kennet 3 Latest evidence 13 Oct 2010 · 22 Oct 2015 Only in the Lower Lee Boomboat Surveys survey set Tench varieties 1 site · latest 12 Oct 2010 Only in the River Kennet survey set Brown / sea trout 47 sites · latest 14 Oct 2025 Chub 41 sites · latest 9 Oct 2025 Dace 41 sites · latest 9 Oct 2025 Barbel 22 sites · latest 25 Sept 2025 Grayling 21 sites · latest 9 Oct 2025 Atlantic salmon 14 sites · latest 25 Oct 2010 Bullhead 11 sites · latest 14 Oct 2025 Minnow 11 sites · latest 14 Oct 2025 Rainbow trout 8 sites · latest 8 Oct 2024 Stone loach 8 sites · latest 8 Oct 2025 Brook lamprey 7 sites · latest 14 Oct 2025 Common [wild] carp 5 sites · latest 24 Oct 2018 European eels > elvers 5 sites · latest 10 Oct 2025 3-spined stickleback 4 sites · latest 14 Oct 2025 Mirror carp 4 sites · latest 4 Nov 2008 Rudd 3 sites · latest 4 Nov 2022 Brook lamprey > ammocoete 1 site · latest 6 Oct 2023 Golden goldfish 1 site · latest 12 Nov 2009 Method and boundary
Comparison, not prediction. Source Environment Agency Ecology & Fish Data Licence Open Government Licence v3.0 Source copy retrieved 23 Jul 2026 Coordinates Not published on this page Not asserted Access, current presence, abundance, catch prospects or safety