ARAnglerRadar evidence & rules

Historic monitoring evidence · Environment Agency

Days - Benson (Margin)

Thames · survey site

This page records ecological survey evidence. It is not proof of current fish presence, abundance, fishing quality, access, permission or safety at this location.

29survey events
24 Sept 1993first recorded survey
20 Jul 2025latest recorded survey
18observed taxa shown

Separate-signal passport

What this record proves — and what it does not.

No blended quality score. Identity, monitoring, freshness, access and rules stay as separate signals so one strong fact cannot hide a missing one.

01 · Identity

Stable monitoring site

AnglerRadar ID
ea-fish-site:8239
EA waterbody ID
GB106039030331
Waterbody
TWARP reaches of the Thames
Catchment
Thames
02 · Observed evidence

Dated survey record

Scope
freshwater
Survey events
29
Positive taxa shown
18
Recorded methods
ELECTRIC FISHING · PDC ELECTRIC FISHING
03 · Freshness

Latest survey about 1 year ago

Coverage runs from 24 Sept 1993 to 20 Jul 2025. This is historic monitoring, never a live presence or catch forecast.

04 · Trip constraints

Access remains unresolved

The survey carries no fishing-rights boundary, permission, opening status or safety notice. Check the owner, rod licence, current byelaws and conditions separately.

Location protection: AnglerRadar does not print the survey coordinate on this page, and nearby API results use coarsened survey areas rather than exact species-linked points.

Observed taxa

What monitoring recorded here

Taxa are ordered by latest survey date. Counts and records reflect monitoring events, not an angling forecast.

Chub

Leuciscus cephalus
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
29

Bleak

Alburnus alburnus
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
29

Roach

Rutilus rutilus
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
29

Pike

Esox lucius
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
29

Dace

Leuciscus leuciscus
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
26

Perch

Perca fluviatilis
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
26

Common bream

Abramis brama
First record
8 Jul 1994
Latest record
20 Jul 2025
Survey events
24

Tench

Tinca tinca
First record
24 Sept 1993
Latest record
20 Jul 2025
Survey events
21

Silver bream

Abramis bjoerkna
First record
8 Jul 1994
Latest record
14 Jul 2024
Survey events
9

Rudd

Scardinius erythrophthalmus
First record
10 Jul 1997
Latest record
14 Jul 2024
Survey events
2

Brown / sea trout

Salmo trutta
First record
14 Jul 2024
Latest record
14 Jul 2024
Survey events
1

Barbel

Barbus barbus
First record
13 Jul 2006
Latest record
24 Jul 2023
Survey events
2

Gudgeon

Gobio gobio
First record
24 Sept 1993
Latest record
7 Jul 2016
Survey events
17

Ruffe

Gymnocephalus cernuus
First record
18 Jul 2008
Latest record
19 Jul 2015
Survey events
3

Common carp varieties

Cyprinus carpio
First record
6 Jul 2000
Latest record
25 Jul 2012
Survey events
4

European eel

Anguilla anguilla
First record
8 Jul 1994
Latest record
18 Jul 2011
Survey events
5

European eels > elvers

Anguilla anguilla
First record
13 Jul 2006
Latest record
13 Jul 2006
Survey events
1

Mirror carp

Cyprinus carpio
First record
11 Jul 2004
Latest record
11 Jul 2004
Survey events
1

Rules and access

Check before you travel.

Environment Agency ecology records do not carry fishing-rights boundaries or live restrictions. Confirm the fishery owner, permission, local byelaws, seasonal rules, safety notices and current conditions before setting out.

Check live freshwater fishing rules

Provenance

Source, licence and boundary

Open the official dataset

More evidence nearby

Other surveyed waters in Thames.

817 survey sites in this ecology region carry recorded taxa. Each keeps its own dates and source.

Browse Thames survey sites →