ARAnglerRadar evidence & rules

Historic monitoring evidence · Environment Agency

Whitchurch to Mapledurham (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.

17survey events
12 Jul 2001first recorded survey
22 Jul 2025latest recorded survey
19observed 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:7330
EA waterbody ID
GB106039030331
Waterbody
Middle Thames
Catchment
Thames
02 · Observed evidence

Dated survey record

Scope
freshwater
Survey events
17
Positive taxa shown
19
Recorded methods
ELECTRIC FISHING · PDC ELECTRIC FISHING
03 · Freshness

Latest survey about 1 year ago

Coverage runs from 12 Jul 2001 to 22 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
12 Jul 2001
Latest record
22 Jul 2025
Survey events
17

Dace

Leuciscus leuciscus
First record
12 Jul 2001
Latest record
22 Jul 2025
Survey events
17

Bleak

Alburnus alburnus
First record
12 Jul 2001
Latest record
22 Jul 2025
Survey events
17

Roach

Rutilus rutilus
First record
12 Jul 2001
Latest record
22 Jul 2025
Survey events
17

Pike

Esox lucius
First record
12 Jul 2001
Latest record
22 Jul 2025
Survey events
17

Perch

Perca fluviatilis
First record
12 Jul 2001
Latest record
22 Jul 2025
Survey events
16

Gudgeon

Gobio gobio
First record
12 Jul 2001
Latest record
22 Jul 2025
Survey events
12

Tench

Tinca tinca
First record
16 Jul 2003
Latest record
22 Jul 2025
Survey events
7

Rudd

Scardinius erythrophthalmus
First record
10 Jul 2013
Latest record
22 Jul 2025
Survey events
3

Common carp varieties

Cyprinus carpio
First record
22 Jul 2025
Latest record
22 Jul 2025
Survey events
1

Common bream

Abramis brama
First record
14 Aug 2007
Latest record
24 Jul 2022
Survey events
6

Silver bream

Abramis bjoerkna
First record
18 Jul 2002
Latest record
24 Jul 2022
Survey events
5

Roach x common bream hybrid

Rutilus rutilus x Abramis brama
First record
26 Jul 2019
Latest record
26 Jul 2019
Survey events
1

Common [wild] carp

Cyprinus carpio
First record
10 Jul 2013
Latest record
9 Jul 2016
Survey events
2

European eels > elvers

Anguilla anguilla
First record
9 Jul 2016
Latest record
9 Jul 2016
Survey events
1

Ruffe

Gymnocephalus cernuus
First record
20 Jul 2010
Latest record
29 Jul 2012
Survey events
2

European eel

Anguilla anguilla
First record
18 Jul 2002
Latest record
20 Jul 2010
Survey events
6

Brown / sea trout

Salmo trutta
First record
18 Jul 2002
Latest record
18 Jul 2002
Survey events
1

Mirror carp

Cyprinus carpio
First record
18 Jul 2002
Latest record
18 Jul 2002
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 →