AnglerRadar / Compare rivers Compare river fishing evidence · England
Same facts. 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 3
Survey events 3
Recorded taxa 9
Evidence period 3 Jul 2012 – 3 Jul 2012
Sites latest within 2 years 0
Sites latest over 10 years ago 3
EA waterbody IDs Not supplied
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
9 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 West Drayton Mill side channel investigation 3 River Kennet 47 Latest evidence 3 Jul 2012 · 9 Oct 2025 Chub West Drayton Mill side channel investigation 3 River Kennet 41 Latest evidence 3 Jul 2012 · 9 Oct 2025 Dace West Drayton Mill side channel investigation 3 River Kennet 41 Latest evidence 3 Jul 2012 · 9 Oct 2025 Perch West Drayton Mill side channel investigation 3 River Kennet 38 Latest evidence 3 Jul 2012 · 9 Oct 2025 Roach West Drayton Mill side channel investigation 3 River Kennet 36 Latest evidence 3 Jul 2012 · 8 Oct 2025 Gudgeon West Drayton Mill side channel investigation 1 River Kennet 31 Latest evidence 3 Jul 2012 · 1 Oct 2025 Barbel West Drayton Mill side channel investigation 1 River Kennet 22 Latest evidence 3 Jul 2012 · 25 Sept 2025 Tench West Drayton Mill side channel investigation 1 River Kennet 13 Latest evidence 3 Jul 2012 · 13 Nov 2024 European eel West Drayton Mill side channel investigation 2 River Kennet 9 Latest evidence 3 Jul 2012 · 8 Nov 2013 Only in the West Drayton Mill side channel investigation survey set No distinct positive taxon aggregate in this comparison.
Only in the River Kennet survey set Brown / sea trout 47 sites · latest 14 Oct 2025 Bleak 27 sites · latest 25 Sept 2025 Grayling 21 sites · latest 9 Oct 2025 Common bream 19 sites · latest 25 Sept 2025 Atlantic salmon 14 sites · latest 25 Oct 2010 Roach x common bream hybrid 12 sites · latest 25 Oct 2018 Bullhead 11 sites · latest 14 Oct 2025 Minnow 11 sites · latest 14 Oct 2025 Ruffe 9 sites · latest 5 Nov 2022 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 Pike varieties 5 sites · latest 1 Oct 2025 3-spined stickleback 4 sites · latest 14 Oct 2025 Mirror carp 4 sites · latest 4 Nov 2008 Common carp varieties 3 sites · latest 22 Oct 2015 Rudd 3 sites · latest 4 Nov 2022 Silver bream 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